Hi Danny, thanks for putting up this accurate and informative video on power cables. For some additional reference for your viewers, here are links to two videos I made using an Entech power line noise analyzer that demonstrates *_with data_* the impact that well-designed power cords can have on reducing noise from our AC mains. Links here: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-g2SAj7aKXGo.html and here: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE--X9gYpmtlxE.html ASR likes data? Well, here it is...
Your test doesn't show what effect the noise reducing cable has on the output of your audio components. Instead you end your video with the statement "you can assume...". So far for objective data.
How come you're getting what appears to be just 1 audio signal? Around here there's dozens of FM and AM radio stations, so if your power did somehow manage to pickup radio signals, wouldn't it just sound like noise, and not like 1 radio station?
@@4everB2 All one has to do is plug it in and listen. A large proportion of the noise from audio systems comes from the components _themselves._ Specifically, their full-wave bridge rectifier power supplies. It's *alternating current,* the current DOES NOT flow just in _one direction_ like water from a hose to a faucet; from the wall rceptacle to the component, in only one direction. It's AC...the current goes INTO the component and back OUT of the component, at *60X/sec.* And, when the the current comes back out of the component, noise components from preamps and amp power supplies are distributed to lower signal source components. It's a SYSTEM: the power distributor prevents noise COMING IN from the AC mains and NR power cords prevent noise from coming BACK OUT of the components.
@@stephenscharf6293 I have tested those meters and the noise they make is NOT proportional to noise on the power line. To wit, I bet you were NOT hearing that Am station on your system. For that to happen, the bandwidth of your audio gear needs to go way higher than audio band. And some sort of demodulation to occur. This can happen with very long runs of audio cables and such but in home scenarios, it is very rare. To the extent your gear does play AM radio, then sure, you can deploy various means to get rid of it or better yet, buy audio gear that is not susceptible to such interference. As to interference from the AC cable, I had to put a giant transformer right next to the cable to induce any mains noise. And even then, it was way below threshold of audibility. Again, folks are not hearing such interference in their audio gear. Really, those meters are tools used to sell you things you don't need. Don't put your trust in a silly little meter that doesn't show the spectrum or even tell you what on earth it is spitting out. If you believe in measurements, trust the ones I show where I show the output of audio devices where no impact is shown at all with these cable and power tweeks.
You can place an RCA"unbalanced" cable near a powercord and hear the buzzing in a speaker when the EMI is strong enough and the cable has poor shielding.
Danny, I've bought your products in the past & probably will again, but, I think in this video one of your "proofs" can be painted with the same brush you use to paint Amir testing with no load. Specifically I am talking about your use of background noise as an analog for noise on a power cable. If you want to show how your power cable protects against noise, just show it. To show how much your power cable can reduce noise injected into a power supply, setting up a simple test seems pretty straightforward. I might suggest something like the following; 1) An AC power source. 2) A noise source on the same circuit, perhaps fluorescent lights, or some other device(s) which is/are noisy. Make sure the noise source is as far away from the actual test as possible. 3) An standard AC outlet. 4) A standard AC power cord of reasonable quality. 5) A GR Research power cord. 6) A quality power supply either switching or linear. 7 A resistor to act as a load. 8) An oscilloscope to measure noise. Hook the power supply to the resistor for a load, connect the oscilloscope to the resistor for measurement, attach the power to the power supply with the standard AC power cable. Capture screen shots of the noise artifacts. Then swap in the GR Research cable take the same screen shots and compare. Any differences will show the benefit of the power cable. The use of the power supply is simple, most if not all power supplies have circuitry to reduce noise in the output DC signal. Different power supplies are more or less effective at this. All audio gear have power supplies to convert the AC to DC and to provide various voltages to different circuits in the equipment. It also means the resistor we need is much more manageable. The reason for a resistor is it shouldn't inject much if any noise into the test. I don't have an oscilloscope or one of your power cords, or I would try it myself and post the results.
@@dannyrichie9743 No, you're the one who refuses to test your theory. Asserting over and over that "it must work because it makes an audible difference" is not testing your theory. It's making a baseless assertion that cannot be - and has not been - verified by anyone else in a properly designed scientific study.
I definitely noticed the long coaxial cable run in ceiling/wall bringing tremendous noise when I put in my Rel 212/sx subs. I had some cheaper subs and it didn’t really have any noise with the same cables. Once I switched to XLR, there was zero noise. So yes, definitely there is interference that goes on with cables, also, the higher-end gear usually will be more sensitive to it.
@@guillermomartin8248 absolutely, but that's with interconnects that carry the signal. An AC cord is a different proposition. And ask yourself - who has plugged in a piece of gear, heard all kinds of interference noise like you did with your Rel subs, and then solved that noise problem with a different AC cord? No one. Balanced interconnects, though, can definitely reduce or solve that kind of problem, and the mechanism by which they do so is well known, easily tested, easily measured, and easily confirmed. Can't say that for Danny's AC cord.
Danny, do the tests and show your cables make a difference and in what ways and I will buy them. Until them saying you "know" and have done tests doesn't make anyone come to your side. Your product show it and I will agree and buy.
@@ramencurry6672 No, it's the people who take a scope and plot a line and tell you how it sounds.....sound familiar? This is without going into a room with a revealing system and letting them show how components can change a system with cables, or whatever. The ones who deny without auditioning, are really on a bandwagon. Other than that
@@stever7638 I’ve done the comparison with high end power cables on gear costing thousands of dollars. No difference. ….Also the people with the best golden ears are studio engineers analyzing the tiniest nuances. You never hear them talking about power cables.
@@stever7638 Literally human ears are not anywhere NEAR as sensitive or precise as the high grade test equipment such as the Audio Precision System One and only a fool believes otherwise.
@@Turboy65 I think you're missing my point. High end tube gear can generally sound much better than solid state. But it's not gonna measure that way. And there seems to be a consensus between a group of people, that it doesn't matter how it sounds. It's only how it measures and that's not how it works. The human ear can distinguish a 1 HZ difference at 400 Hz, that's more than enough resolution.
Wow! Engineer with 20 years of electronics experience here. First of all, even a fresh graduate engineer would know that it just takes one single and simple step to prove that a cable (or any other product ftm) could reduce electical noise in audio: Record the same output signal from the same playback device under the same conditions with different cables and compare the noise levels. This video does everything but. Furthermore, the narrative is deceptive in nature. In the part where a red line and a green line are shown as noise graphs: That is NOT not isolated electrical noise. It is the actual noise of the surroundings being recorded by the mic. There is a fan running in the background while recording!!! A power cable can do nothing about it. It's like plugging a power cable to reduce the grains in an old recording or remove pop and scratch noises from vynil. Just like: It takes looking at a handful of objective indicators to actually understand earth is round, but they always get skipped or ignored by flat earthers. It's RICH to call anyone else flat earthers. I can't believe there are actual human beings praising this video...
You might need to watch it again. 25:30 mark. We are going to "illustrate" noise levels.... I explained that they were not the same, but for illustration purposes it worked great in showing how random A/C noise levels are.
Dear @@dannyrichie9743 the noise you're "illustrating" has NOTHING To do with electrical noise. While common AC noise may or may not be out of phase, however, EMI noise is on phase as picked up by two cables side by side. "Illustrating" room noise as analogous as electrical noise is misleading and irrelevant to the actual question: Can an AC cable actually reduce electrical or EMI noise? If it could, it could easily be proven with a VERY SIMPLE experiment I outlined in my previous message. You don't need a 40 min-long video to "talk" about it, just demonstrate it: Record the same output signal from the same playback device under the same conditions with different cables and compare the noise levels on the scope. It's that simple. You're also pretending as if modern audio electronics don't have purpose built internal electrical noise filters already. They do, and pretending that any AC noise makes their way directly into the audio signal path as-is, is pretty deceiving if not totally oblivious in the first place.
@@hankkirk944 Oh yeah, my illustration easily showed the randomness of noise. Everyone else got it. You are just being continuous. A/C noise easily finds its way onto the audio signal. It is even present on digital cables. If you think the power supplies will remove it all then you are very naive.
Are you sure about how the balanced signal works? It sure doesn't work like that in industry. The inverter signal and the non-inverted signal is feed to a differential amp. Since both lines were subject to the same noise environment the polarities of that noise should also be in phase. But since a differential amp is used on the input the noise will be rejected by the amplifier input stage. This is called common mode rejection.
Really? Is the particular cable in question remotely near a StarQuad config? No! Hos power cable isn’t even shielded! Sounds like you guys should go work with Amir.
@@izumispa2993 Did you watch the complete video? He jumps back and forth between the characteristics of a good power and cable and interconnects with differential inputs. I do have a lot more respect for Amir, he isn't selling snake oil and elixirs. He backs up most of his positions with science and good engineering. However, I have had my disagreements with Amir in past as well.
@@johndavidson6433 so have I. He seems to know enough about what he's saying so that a laymen would be convinced that he is non-bias. With that said, he's trying to convince the average listener; who has moderately good stereo equipment. Not to spend money on high end attachments that may have little to no effect on your equipment! In other words 89 octane works very well in most domestic cars. Changing to 93 or 100 octane will make very little to no difference to your car power. However, in a Bugatti or Porsche etc... going from 93 to 98 or even 100 octane. Can increase your engine power by 15 to 30%!
A salesman trying to educate an Engineer.............Danny you are quite entertaining for sure, I love most of your videos, but in all fairness YOU ARE DOING THIS AS A BUSINESS,....Amir is doing this as a HOBBY and is a neutral participant. You bickering with him over his measurements etc is protecting what you sell. We all get that. When you bicker about ASR you get more views also. We get that. But in the end, anyone educated in electronics or audio engineering sees it all for what it is. You mix 50% actual facts with a bit of snake oil, and hope no one realizes.
@@astheworldburns3590 he makes these claims that the engineering is superior. He also does not state that any of these specs make something sound better. He's using ACTUAL SCIENCE to provide usable data. ZERO SNAKE OIL.
I am an engineer myself, but Amir is everything except being objective and neutral. In fact, he already wrongly advised people certain things, like EQ'ing destructive (port) resonance dips. Which doesn't even do anything (since it's a destructive resonance), it even can overload and damage your speakers. But the list goes on and on. Which is fine by itself, except that Amir is 100% closed off for any kind of critique. Kind of ironic when someone calls himself "scientific". I like the mission he's on, but definitely not his attitude. All that being said, I totally agree with the rest of what you said btw! :)
I also am an engineer. It not salesmen trying to educate engineers here but engineers who think they are engineers, but aren’t. Amir said it best…just because you passed a few courses in school doesn’t mean you understand the practical uses of the theory.
Judging by some of the responses below it seems that there are some folks that don't know what a 'double blind' experiment is. Yes is can be conducted for a cable test. Definition: "A type of clinical trial in which neither the participants nor the researcher knows which treatment or intervention participants are receiving until the clinical trial is over. This makes results of the study less likely to be biased." A third person administers the treatment or in this case the cable selection. Probable a single blind test is all that is required.
You totally discount the impedance of the device the cable is connected. Power cable generally are supplying low impedance loads. Emf and induced noise cannot provide sufficient coupling to induce voltage. Also, what do you think the purpose of the power supply is...to convert the incoming ac to lower voltage and then rectify it and filter it. There is so much miss-information in this video you should consider taking up politics.
Yup, a cheap good speaker in a good room will sound way better than crazy expensive ones in a toilet. Room treatmemt is where people should dump their money in before anything else.
"there's NOISE in the AC Line" Yeah, but the Power Supply in any equipment is converting the "noisy AC" coming out of your wall socket into CLEAN DC before feeding it into the noise sensitive components, so...
That's one of the basics he chooses to ignore here. He knows this, but chooses his words carefully. His main goal is to keep selling the snake oil, obviously. This is all a performance, and attempt to keep scamming people who don't know this. I'm also pretty sure he bans all of our comments, too, if he can. He dug himself a too deep hole. Public cannot see this, I mean look at the comments, people know he's a liar.
So you are telling me, that the point of cutting costs(power supply) for more earnings in $ is so perfect it changes water into a wine??? LOL. Power conditioners that are a size of an amp is a compromise in terms of optimal signal. It's easier to clean power when it was pre cleaneg by some bit before. Especialy that cleaner biult in the amp is not so great.
@@sheerenergy8602 Isn't there a difference to cleaning power with an amp sized conditioner before a system and having a solid gold cable going from the wall to the system (ignoring all the qualities or problems from the power station to your wall socket.) I don't think a cable no matter how expensive can claim passive conditioning.
@@spudpud-T67 You are one of that guys who tells around that cables in the wall are shitty to the outlet and from there im using more expensive cables and you dont see no point in that. Well im seeing it and enjoying my improvments in sound. And you don't even know that gold is less conductive than copper.😂 And if you hace a house and you can do two or 3 separate electric circuts its recomended. Noisy machines on one and audio euip on the second. Power conditioner can be used in many houses when you move out or when you renting a condo/room. I dont need to crush any walls. Problems of conditioners they are expensive and limiting dynamics vs bare outlet.
A lot to unpack here. 1st, I always thought the "flat earthers" reference belonged to the "we know", "it's common sense", "it's obvious" group and the "non-flat earthers" were the ones that used engineering, testing and measuring to scientifically prove their point. After all, virtually any 2nd year engineering student can prove mathematically that the earth is round. As in all conspiracies, he who labels a conspiracy 1st, has the high ground. 2. With cables, Amir's point was totally missed and misconstrued. Take a cable loop with an AC current of one amp and place another closed loop cable parallel to it and you can calculate the induced current! EVEN if they are a MILE from each other! It is simple mathematics and physics--not brain surgery. The question is not, DOES IT HAPPEN, BUT, DOES IT MAKE AN AUDIBLE DIFFERENCE! The same is true for a piece of wire acting as an antenna--as Amir said, any wire not properly shielded will act as an antenna! BUT DOES IT MAKE AN AUDIBLE DIFFERENCE!!?? I would have to go back and look at Amir's video but I believe Danny confused and misconstrued Amir's analysis and description of these two totally different effects---that is induced voltages and antenna affects. Amir frequently will tell you that a product does exactly what it is "advertised to", as in a power supply conditioner, but then he will tell you that it is not necessary, nor audible, and show the measurements to prove it and THIS is the point of Amir's test and reviews! Now, one can use all the soft spoken, not name calling words of "everyone knows", it's common sense", my "30 years of experience', etc but in doing so one has not proved a single thing to refute Amir's scientific, test and measurements. And yet, Amir has offered many many times a chance for one and all to prove him wrong by submitting a scientific, peer reviewed, double-blind study proving that one could HEAR the difference. He will even republish it! But of course, that would be a waste of time because the real flat earthers, "know', "have the common sense", have "the years of experience" etc that would make a peer review double-blind scientific study a waste of time and money. In full disclosure, I am an electrical engineer older than I ever thought I would be, coming from a heavy industrial background. I love watching videos produced by both Danny and Amir. Both have knowledge and experience that has helped me tremendously in my futile search for audio nirvana.
The problem there is that we already know and have proven hundreds of times that there are audible differences. Amir is just taking a handful of rudimentary measurements that don't show a measured difference and is theorizing a result. The fact is that we already know there is an audible difference and for Amir to get nothing to confirm it means he is measuring the wrong things. Also, anyone throwing out the terms "double blind" has never conducted a cable comparison.
Why I enjoy both Danny and Amir's videos, when it comes to cables making a difference I say show me the scientific, peer reviewed, double-blind study. If you can tell a difference as stated, the the study will not contradict that. If study does show that, then I will admit that there is a difference. But I doubt this outcome. Everything I have seen so far does not support hearing a difference in a power cable for example. For such a long and contentious argument, running a scientific, peer reviewed, double-blind study seems rather trivial. I have been waiting years for this and I challenge Danny and Amir to come together to do this.
@@todd8155 Good grief people. It is not possible to compare cables "double blind". You have no idea what goes into a cable comparison. We've made and have done blind comparisons all the time. It is how we develop products like these. So we know we can back up what we say.
@dannyrichie9743 - Sure it is. You are smart guys. You can figure it out. Here's a simple method requiring only three people, two rooms, a buzzer, and some paper: 1) A person (the switcher) in a separate room that would get a one-way signal, like a buzzer going off, then manually switch cables, noting the time and writing result on paper. 2) A Conductor that runs the test and presses the switch button. The conductor notes the time of the switch and the test results on paper. He is with the listener. 3) Listener(s). The test conductor, and listener(s) would be together in a separate room from the switcher and there would be no information flow from the switcher to the conductor or listener(s). Double blind, simple, cheap. What's so hard or impossible about that? Here is a more complex scenario: Create a switching box that is CPU controlled (a Raspberry Pi some relays, some code, and not much more). It would randomly switch the outputs when you pressed a switch, then spit out the switching results after the test. I would bet that some of yours or Amir's listeners would be willing to create such a device (it is beyond my skill level.) It is anything but impossible. This is an experiment that is demanding to be done, and should have been done decades ago IMO. I mean, with some support from manufactures, I would be willing to set this up. I am sure that you have two rooms, one that can contain the equipment and switcher, close to another listening room with the conductor and listener. We could challenge leading industry types and RU-vidrs to take the double-blind listening challenge. Surely this would be one of the greatest experiments in audio listening to date. Blind is not double blind. To me this a basic tenant of scientific research. Until this is done, you will never convince some people. I myself would like to be proven wrong, but really, don't believe that I am. I can admit that I am wrong and ultimately I believe you to have integrity and the ability and humility to admit when one is wrong. I challenge Amir @audiosciencereview to join in. I challenge both sides to accept the results of this challenge, whatever they may be.
Definitely a good idea to keep interconnects from mains cables but in my time, no recording studio or mastering suite that I have visited had any fancy expensive mains cables.
Back in the day I had a friend who built recording studios as his business. The electrical systems in these recording studio he built are all custom built for purpose. I had even seen one studio with huge transformers installed in the back of the building. I assume that is why the power coming out from the outlets are clean and there is no need for power conditioning or the sort.
@@jasonleyson7825 given the amount of money audiophiles put into line conditioners and magic cables, over and over again, they could do the same for their home.
@@jasonleyson7825 Hi, there are a kind or triphasic power transformer used for "isolates" the secondary to the grid or primary circuit from electrical perturbations, noises, transitoires and electrical short circuit. It's made using a specific type i.e. of star delta connection and design. They are called "power transformer for isolation" . Could be this
Why can't we measure and show the differences? Do we lack the resolution in the sampling equipment to show the nuance of change from one cable to the next? One thing I agree with Amir is that measuring electrical properties of a cable is somewhat useless when it's the net effect in the system that matters. Can we have a cable with better conductivity and noise reduction that actually results in subjectively worse sound at the listening position? And what is the cable changing? Because if it's frequency response, a cable would be a terrible way to accomplish that task when you could alternatively just... EQ
if equipment can't detect it … Shure as hell human ears will not... our ears are crap even in the animal kingdom domain, any cat or dog hears better than us
I have done residential home theaters, whole house AV systems, commercial data and security for over 20 plus years and it is a known fact that running any kind of low voltage signals alongside electrical for closer than a foot for more than 3 feet will cause inductance and degrade the signal. Only way around it is to cross at 90 degree angles and when forced 45 degree angles at the least. This is industry knowledge that one must adhere to when running any low voltage cable. I won't go into anymore depth on this as the facts are simple. Ask any professional in the industry and they will agree. Look at BICSI standards even. You are absolutely correct and those who have done the opposite experience a much worse signal with many problems. Btw, love your videos and appreciate what you do, thank you!
Danny, I think it’s time to invite Amir to your premises so you can demonstrate and he can test - play around. Your knowledge and understanding will converge. Before that though - go and break bread, have breakfast or lunch together. Oblique ‘back and forth’ public conversations with an audience that will never promote collegial discourse has, predictably, got you off to a bad start, and no good will really come of it (except for RU-vid’s ‘click’ revenue)… whereas collaborative interaction may bring some really superb advancement of knowledge… and starve some trolls of oxygen. You and Jay set a terrific template for this recently. It was absolutely superb!
I like this back and forth. I watch you and Amir both I'll like your comment on his assertion that once power goes into a component it is filtered for noise and stabilized before being used. Thanks.
If the null test noise (regardless of it beeing a difference of random noises) was below 93dB in level you would have to play plenty loud and then wait for your ears to stop protecting themselves to be able to distinguish the noise at all. Every sound comparable in frequency also increasing the masking effect. It’s not really scientific to say the cause of the experience of sound difference is due to sound altered by the noise in cables? That would be a jump into a conclusion from interpretation ignoring the psychoacoustics.
Well, anyone that has ever done this stuff before knows that the guy doing the switching is going to see the cables. So it can't be double blind. However, we have done blind comparisons hundreds of times. I would love to have Amir over for one of those, but he will never come.
@@dannyrichie9743 sorry, I meant single blind with you listening and him switching, how many times out of 10 do you think you would be correct? I assume 9 out of 10 would prove the point?
I think its best tor try ot yourself and see if it works and you can hear the difference rather than listening to other people. Thats is what I did a very long time ago.
@@dannyrichie9743 You need to understand what double blind means and how it can be achieved. It’s not rocket science even though it might be too much for you to understand.
Oh good ,another pissing Match between someone who knows what he's talking about vs Danny " I'm a salesman selling any high dollar contraption with 100 % zero proof of what he says ".
What's funny is well designed gear have power supplies with insane RF filtering (e.g. -30dB down from FCC Class-B standards in the case of the Mola Mola Tambaqui) and tight regulation of the output, so cable on the planet can possibly make any difference to an audio component which is competently designed.
You said in the video that, the burn-in is important, because the conductor and dielectric are changing their properties. According to this phenomenon, can you tell what is a life span of a power cable and how often should I replace it?
I burn them in for about 32 hours and then I find that the quality starts to deteriorate at about 50 hours so I use my cables for about 18 before I replace. I of course have a very resolving systems. For less resolving system you can probably use a cable for at least 50 before you notice deterioration.
All of the cable arguments STOP when when an experienced electronics tech tests all the cable nonsense with an oscilloscope! Period - end of story. An o-scope is millions of times more sensitive than even Superman's hearing. Shielded cables have their place as does balanced cable circuits. I'm just glad that I don't have audio OCD nor the money to spend on overpriced copper conductors.
Oscilloscope cant hear music. It only test and display voltage signals as waveforms, visual representations of the variation of voltage over time. Only test with oscp i would intrest of is from the wall outlet with generic cable transfering current to the amp, and with fat cooper shielded audiophile fancy cable measured with oscilloscope, but in point conection to the ampliefier. Put the volume on amp at 11 o clock. We want check if maybe fat cable will deliver more calories :) But it still not show all the components of the signal. Osciliscope doesnt know how to any parts of signal component tranfers into the sound, how many components are crucial to that sound. I give you an analogy. we got concred brige and an equivalet of osciloscope that is a machine that put freasure to that brige to test in tons how much can it handle. It showed 18 tons. But in practice you can safly cross that brige with 30 ton truck, cause the machine is limited to only point pressure measurment. The same thing is with oscilloscope. It's limited to it functions, and the data can be misunderstood if someone doesnt know all the components that makes an audio signal optimal. You dont know and oscilloscope doesn't know. Now there are two of you, that dont know :)
@@sheerenergy8602 Really? A highly sensitive oscilloscope can't measure every millionth or billionth of a second down to a millionth of a volt? Dang, you must be really smart and have decades of electronics experience. Thank you for your valuable input because I never knew that the human ear could pick up megacycles of frequency in the gaseous medium of air.
@@welderfixer First of all do the reading with understanding. I paste you a part of definition of oscilloscope. And it measures only that, nothing more. I said nothing about accuracy. I highlight that it cant maesure every componet of signal. Osciloscope dosnt know if it measures Panasonic or Krell. All of the componets of the audio signal combined cant be measured in one or a few devices. So the best overall measuring test bench are still our ears! Chnaging skinny generic power cord to a fat good quality one, make a big sound upgrade. Deal with it :)
@@sheerenergy8602 "Oscilloscope cant hear music." "Osciloscope dosnt know if it measures Panasonic or Krell." Why would it need to know that? Music doesn't pass through the power chord. You're obfuscating the real point of the measurement, which is about the delta between a standard power chord and a supposed "high quality" power chord. An oscilloscope allows you to measure a signal at any point in time with much higher precision than any of our senses. The data it captures fully describes the behaviour of the signal we are interested in, whether that be noise from the power line or musical signals further down the signal chain. It's built-in functions allow us to perform bijective transforms to anaylyse the data visually and not leave anything to chance or bias.
@@iSkyline1 LOL - tats your problem. That data analys is bijective to you and you dont want to hear anythig else. You can be simply even a "literate"(dont know how to read and write) and you can check for yourself swiching a cord can give you a more chunky substancial bass or/and some other aspects. Another problem of your is that, I know that measurments for more than 20 years But oscilloscope doesn't show "how come" (easy) current is when it's tranfered thru better quality of copper for instance. Even the same cable vary only in diameter 2,5mm2 vs 4mm2 measures the same, but we all know that ticker in most cases have more "oomph". And do you know why measurments looks almost exactly the same? Because you doing mesurments on the same gear/devices. It has its max consumtion and it wont take more. Oscilloscope dont "seeing" every kind of noise, influance etc.
I find it bizarre how you measure speakers which is science to design a crossover but you accuse Amir of not being scientific by doing measurements to show two power cables have no electrical or interference differences. If you really want to put this to bed, organise an ABX test with yourself and Amir as listeners but run by someone independent.
Amir demonstrates through measurements the difference. I'm open to differences being immeasurable however I'm not aware of any ABX testing done where the people who claim a difference between power cables actually proved it. The burden of proof is on you and simply saying hundreds of people, who potentially have confirmation bias is not proof. No different than the millions who believe in Gods
Hi. I'm a bit confused. You say your interconnects works like a filter. Do you mean a filter on the actual audio being transfered in the cable? If so, how do you secure you only filter the "noise" and not any of the actual audio signal. I don't get the science behind that?
If a cable is connected on 1 side and not on the other side it acts as a capacitor meaning there is a current flowing when connected to an AC power supply. When connected to a DC power supply the current will flow at the moment of plugging untill the cable is charged. The current will be higher when the cable is longer. It is a low current but measurable. Please only say things that are correct. With high voltage these charges can be/are deadly. With low voltage and short cables as in your house the effect is still there but very low.
Hi Danny! You made this video very educational and good! I still do believe that extremely many out there never going to understand the physics in this unfortunately, but hearing is believing, one have to experience this in at least some way to be convinced! I’ve been an audiophile my whole life, and this cable stuff really got my attention when I got older and definitely when I started to work as an audio engineer. I found a very simple way to make people really se the difference, literally. Just connect a ac filter to an older tv and show a black picture or a photo with a lot going on. I never tried your cable but it should do the job, it is stunning how extreme the result is when everything is quiet or when all noise is gone on a screen,. It’s a fact that we can measure what we don’t hear and we can hear stuff that we can’t measure. Thanks for all the interesting videos. I’m going to contact you privately I need some ideas and expertise for a crossover I’m going to build, /Lars Sweden
Once I started listening to the music instead of listening to the audiophile mags telling how awesome raising my cables off the dreaded carpet and put expensive magic dots the size of a quarter on my speakers wall ceilings expensive magic clocks expensive cables makes dramatic differences, I realized how much shit recording there. The best test that had all the audio mags in a hissy fit was a comparison between speakers where all the speakers were behind a curtain and the same with amps where on both the listeners did not know what they were listening to. That mag was called Stereo Review. It was a cosmic eye opener. And a whole year of anger from Harry Pearson from the Absolute Sound Stereophile. That’s about the time I started listening to the music instead of looking and judging my equipment. Speaking of looking the other mag that at the time debunked audiophiles was Audio Magazine who pointed out how reviewers without realizing it describing the sound of equipment was in direct comparison on the look of the build. What’s Astonishing is the Absolute sound admitted it with the review of a massive amp in price size and tank build quality. The reviewer panned the amp by the way. I spent more time on my room and position and enjoy my music. I also do agree with your breakdown of some of the shit build quality on some high end speakers. Yup that’s life choices and different tastes.
Are there affordable mains power analysers that give noise and harmonic distortion info. Better to start with the problem and work towards a solution that the other way around.
Not affordable if you want excellent resolution. I do this all the time in every one of my power reviews. I even have a lab grade AC generator where I can generate extremely distorted mains power. I have done that and half decent audio gear does not care whatsoever. Reason is that your audio gear runs on DC, not AC. All the things that are wrong with AC is filtered out and the output is no longer AC. This is why products like these power cables or AC conditioners, filters, etc. don't make an audible difference. Your audio gear already does what they attempt to do!
I bought some bulk Furutech power cable years ago, and of all cables I have replaced in my system. The power cable is the one that I heard the greatest difference from. Which is kind of ironic since it was the one I was expecting the least from. I didn't notice a difference on every device I plugged in, but on some it was clearly there.
So what if you listen to multitrack music where there isn't an actual soundstage inherent in the recording? What kind of benefits do you see with slapping this on your DAC?
The same as when you slap this on your DAC and play minimally mic'd recordings with tons of natural soundstage: nothing. It's not that folks who are skeptical of Danny's claims think THIS PARTICULAR AC cord DOESN'T impact soundstage. It's that NO AC cord CAN impact soundstage. That's not how AC cords work.
I don't know how much difference it makes, I probably don't have the best hearing anymore so perhaps it makes no difference to me personally but I run both my DAC and Power Amp with good aftermarket cables from a Furman Elite-15i power conditioner, my main reason is that this is for my second system in a large bedroom and I am able to put the Furman in the middle of the room away from outlets and place my DAC and Amp close to it without having to run long power cords, it's more of a positioning thing for me and maybe there are some other secondary sound benefits, I don't think it has hurt sonics.
did you try it on the DAC and the pre-amp rather than the power amp, as its supposed to be more of an improvement on the devices at and closer to the sources. and then to the power amps once the upstream coimponents are sorted.
@@stephenyoud6125 My Dac is both a preamp and DAC, it's a Peachtree Audio SONAdac, my amp is a Peachtree Audio 220 power amp, (not the 220se) This is my bedroom system, not my main system so I am not overly anal about it.
@@The_Story_Channel okay. yeah mine is both streamer and pre-amp theLinn Klimax Exakt DSM then the Linn Klimax Exaktbox crossover / DAC but i haven't aded any power conditioners or fancy power cables yet. It's a new built house in Germany. I know a guy who could probably measure the mains noise for me but am busy completing the Home Cinema room right now and then planning upgrades to my Linn Keltik active speakers first. Lots to do.
Calling people names because they have a different opinion, or idea is not having fun. It is plain and simple bullying, something everyone should have learned when they were a child.
What good is fancy AC power cables if your wall outlet is wired with 12 gauge or at best 10 gauge wiring? I don't think many audiophiles would want to wire their wall outlet to the circuit breaker panel with that super AC power cable. With the exception of the power amplifier I run the entire system from a Sola 500 VA CVT (Constant Voltage Transformer) transformer to clean up the AC. Power conditioners are another way to do this. Speaker cables are an exception. I use 1980s vintage Monster cable speaker wires with four 8 gauge litz wire conductors.
80's vintage Monster cable? That stuff is going to be so oxidized through that PVC by now that it isn't even good for jumper cables. You might want to consider new speaker cables.
silly idea to think the last few feet of cable after passing thru the wires, connectors, transformers, fuses, breakers all the way back from power station to the outlet is going to magically make a difference. If the power cord is of sufficient conductivity it will be just fine. That is science, physics and common sense. Lets be real for a minute please, the fancy power cord is far better at wowing your friends and making you feel like your high end equipment is complete. That is fine and lovely in it own right. There is a need for high end power cables just as there is a need for nice looking designer shoes. They don't perform a function better but they look nice.
You obviously have no experience in this area. Think of a power cable just as a water filter under your sink. Water passed through miles and limes of pipe to get there only to be filtered just before you drink it. Power cables and conditioners do the same thing.
@@dannyrichie9743 Once again, there is no evidence or physics stipulating that your cable filters any noise on mains power. You are working backward from thinking you hear an improvement to causes you imagine that sound good to lay people as an argument. After all, if your cable filtered anything, it would be trivial to show it. You have not which means there is nothing intentional in there to filter. Of course, best filtering is in the audio device just as you describe it! There, voltages and currents are much lower and we want DC anyway so we can filter the heck out of any noise and even distortion on mains. By your notion, it is better for the city to filter the water than you doing it at point of use!
@@dannyrichie9743 I was commenting specifically about power cables, not power conditioners . Conditioners are another topic. On that note, a properly designed power supply in the equipment would effectively filter and convert the power into what is needed. If it requires additional equipment it is poorly designed. Water filtering is a silly comparison. I do admire your efforts though. Thanks for writing back.
@@AudioScienceReview So myself and hundreds of thousands of people all "think" we hear an improvement. We are all just victims of a placebo effect and we don't know what we are talking about. Isn't that a pretty thin argument? You really have nothing to base your views on. You have a belief and you try to make everything fit into that belief system even if the evidence shows otherwise. You are going to have to want to learn if you are going to learn.
@@dannyrichie9743 Yes, you and all of others "think" they hear improvement. There is test equipment to measure difference in performance that fare more sensitive then any human ears.
Funny stuff. I install million dollar lab equipment. Measures stuff to the angstrom level....NEVER had power cord issues, and it's all generic, computers, and hard use power cords, even inside the equipment, is some pretty generic, cheap wires........but somehow audio, is always different when it comes to electrical stuff. Funny, you ain't quite Seinfeld, but funny none the less
In my RF lab I have to network analyzers, Phase Noise analyzers, Noise figure analyzers, Spectrum Analyzers, various RF generators; from around 5Hz to 110GHz and every thing going on standard computer power cables. The most what I see is cell signal leakage for components that are soldered to open test boards.
Both you two refer to measuring s😅me thing we don't listen to, which is the problem of measuring sound. That v or amperage or capacitance or... It's like saying wine is 13% I measured it, but then it shouldn't taste different. Huh....
@@iBeaver1973 Huh? Wine is 13%, what does that even mean. Wait, yes when making wine they do MEASURE, alcohol content, and sugars, and all kinds of other parameters. Why is freaky home audio such a mystery? cus marketeers have you all bamboozles with total nonsense. the food you eat is measured, water is MEASURED, for it's contents and lack of contents...."audio" is such a mystery....oy vey. I guess telephones work, cus they just didn't measure nutin'.
@@iBeaver1973 Yeah because audio we listen is a reproduction. It is possible to measure the difference between the original and reproduction. Wine is wine. Audio measurements are not about how amazing audio sounds, they are about how different reproduction sounds compared to the original recording. That's why your wine analogy doesn't make any sense. Imagine a chef has a recipe and you follow that recipe. In this analogy, recording is chef's recipe and dac/adc/amp is how you follow the recipe. I can measure how different your meal tastes compared to the chef's recipe. That's what audio measurements show.
I'm so glad that I just turn on the music on my cheap, rebuilt RCA floor speakers, and enjoy the music. Non of this worrying about power cables and such. Non of the arrogance that comes with buying $2,000.00 speakers. All done through a mid-grade Marantz that was bought on sale as a closeout. I don't fret over the fact that the new crossovers dont use all air core inductors. As someone with an electronics degree, I totally get the whole components make a difference thing. But in today's economy where food and utilities costs have skyrocketed, I carefully choose the priorities.
I have a decent listening system (mytek Manhattan 2, benchmark amps, focal sopra 3's) this is all in a professionally sound treated room, I even had an electrician run dedicated 20 amp power cables and we he took great care to make sure it was separated from anything else in the wall. I have tried many different power and interconnect cables ranging from Pangea to audio quest to nordost....... I have had many local audiophiles come in and do blind tests and the unanimous conclusion is by a fancy cable for looks not performance. The biggest improvement came from the room treatment and speaker placement.
I can see where you are coming from, the best sound improvement I have ever had was when I dropped home runs from the panel, or Main, direct to the AV corner in my living room. At that point, the electrical cords really did not matter on my modest system. Now, where I had a massive improvement in both sound and especially video transmission, was the addition of a filtering network switch. The TV simply POPPED in both color and contrast, it looked like a new TV had been installed. Others asked when I had bought a new TV. I have two switches, one of the $500 LHY units, and one $50 Netgear GS108eV3. I cannot tell the difference between the two, the $50 NetGear unit does everything the $500 LHY unit does, kicking self. Try a NetGear GS108eV3, it is the real deal. Amazon sells them, it does nothing, return it.
The screen shot at 28:00 includes any AC noise from the entire system plus the room noise. I did not see any screen shot with the mic gain shut down (off) and just dealing with the AC noise from the mixer and/or the mic pre and the computer power supply. I have always used an MIT power cord on my computer which has lowered the AC noise in my system by -10db. I now also use Furman AC filters on all my gear to clean up all the AC noise from the breaker box. The other issue is what mic are you using? Many mics have close to -20db of self noise, others like the NT-1A from Rode have -4 to -5 db of self noise, extremely quiet. What is left in using those mics is the ambient noise of the room, including the blower from your HVAC system, which hopefully is off when recording. It is one of the reasons I have complained about a company that records in DSD as their room noise floor is over -50 db with their mics open in their studio. NOT ACCEPTABLE. Either their console is noisy from power supply issues, mic preamps, or the mics and the room? Start at the beginning and see what the noise floor of just your computer is with no inputs open into your daw. I am close to -80db.
Your power supply is going to deal with the noise, so it's largely irrelevant. The important thing is whether or not the output of the device (ex; cd player, dac, etc.) is affected by the cable. That's what Armin measured, and there was no difference. That's the only thing that matters.
@@literalghost929 Frustrated that I had to get this far into the comments to finally see some sense... pretty frustrating to see someone with this much audience having absolutely no idea what they're actually "measuring".
More then 20 years ago, I made my first power cable, based on a design from de "twisted snake" TNT site. I couldn't believe the diffrence was that big. It costed me only about 500 Bfr (before the euro, now maybe 15 euro for one cable) But then again I was listening to triode monoblocks and a VTL preamp on Alon speakers. Maybe, I was ready for it ;) So, I know that it's much easier to deny these fact's. (or "because you cant measure it, you can hear it" ). You did a great job of explaning it, in a simple way. 👍
@@dannyrichie9743 Do measurements in the nuclear power industry "theorize" a result when it comes to exposure and safety? Or did Von Neumann and others accurately pave the way for real-world outcomes through data and mathematics? Can you name one thing John Von Neumann was incorrect about?
@@dannyrichie9743 Conservation of information. Every single thing in the universe can be expressed mathematically. That's how some guys started from ideas alone and built things to keep us from speaking German as a requirement some time ago. They were MEN. There is no reason for you not to have findings on paper except laziness or fear.
@@slofty Not everything is expressed mathematically, many things in life are difficult to quantify. What we easily sense by touch, smell, taste or what and how we hear are all good examples.
With old ears & damaged hearing my audio listening skills are limited. Most of my music listening is via distributed audio for background. Bottom line, no need for me to spend gobs of money on expensive audio gear and accessories, I couldn't detect any differences anyway. I enjoy following ASR & GRR, and others, for the information provided. But apparently these people have listening skills far beyond my capabilities. I can understand "directionally correct" and some of the science being applied to hi-end gear. BTW, if I spend a lot of money on some expensive gear, I expect it to measure well scienfifically.
Danny you say your power cable needed 200 hours burn in. When do you know it is past it's best considering it seemed to burn in before reaching it's best? If this is the case it must have a particular lifespan due to continuous current flow causing the cable to burn in and burn out?
I have said this before. I am from the car audio side. We used to say "keep ground and power cables from signal and speaker cables" If they have to cross, make sure it is as perpendicular as possible. I do the same in my home audio as well. It ain't rocket science.
How much do you know about power supplies? Everything I have that needs a power cable has a power supply. How does the noise and interference get through the power supply, and into the audio signal path?
Hey, where did your first post go? It was really good. I was going to respond to it that I agreed with all of that, but then I couldn't respond to it because it wasn't there anymore.
@@DescartesRenegade So far 100% of everyone that has ever been over has not only heard differences but correctly and consistently identified what those differences are.
I just enjoy the back and forth banter. It keeps life interesting. 🤪 I was told just last month that I need hearing aids due to having audio processing issues brain wise. So there goes any input about having any opinion on what I'm hearing being described to anyone else. Felt really horrible "hearing" that news from the ear Doc. Pretty much means anything I ever heard or witnessed could not be trusted. Anyway's, you guys have a good one! And I for one ENJOY the Banter back and forth! And at the end of the day? I find great comfort that topics like this are the hill people will die on. Better then doing so in some stupid war. Have a good one!
i worked at a power supple company for over two decades and we had a high end Marconi receiver we used to test our power supplies for compliance with the UL requirement for conducted and radiated noise. That taught me how important conductor orientation as well as component orientation is when you want to reduce susceptibility to radiated noise. Quite a few of today's products use switch mode power supplies, if these are well designed they should not cause to much interference but be aware that quite a few small switch mode power bricks are not well designed when it comes to noise and some of the certifications you see stamped on them is just eyewash. Any country that would put melamine in baby food has to be watched carefully and their products have to be periodically checked to make sure they are complying with radiated noise requirements because they might change vendors and not realize the new vendors supplies are not what they think they are
I put your cables on linn 350 active speakers, very noticeable difference in every department. Pure skeptical but pleasantly surprised. Helped my streamer too. It's a few quid but a good upgrade for the money.
Would be very grateful if someone can explain how does the power cable filter/remove the noise/intereference from the electrical network before it? And if a power cable can do that, then why can't the amplifier do it instead? I have always thought that this is the job of a good power supply...
@Danny, asking this question in a comment instead of email because this might be something others are thinking (maybe also comment) and I have not heard you speak of this. I have a pair of PSB Image 4T tower speakers. Like do like the overall sound, but it just feels like they lack some openness and treble detail. My question is = Can GR do a crossover parts upgrade just from the crossover network being sent, instead of having to find a huge box and ship the whole speaker? - Maybe, not 100% ideal. But, it just seems like from looking at the cheese in the 'crossover/wiring/terminals' and already figuring these need 'no-rex'; higher quality crossover parts would be a better upgrade than investing in new electronics. Currently, I have Parasound separates. What say you? - Thanks
Yes, improvements in clarity, detail, openness, layer of the sound stage, and less overall smearing can be achieved with typical parts quality upgrades. It obviously won't fix any other issues with the speakers like phase issues, ringing or stored energy, amplitude issues, etc. If the speakers are well designed and are free of other issues then a parts upgrade is perfect. If they do have other issues then it is best to resolve those and then throw good parts at it.
I'm a big fan of yours, In the UK we refer to the wall fitting as a socket the removable part connected to the power lead as the plug. In the UK in cities the mains power is very noisy.
The difference between Ethernet and power runs is the field is much greater with mains supply than speaker output being at best a few hundred watts in the home environment The issue with Ethernet is not loss of quality but loss of transfer rate. Noisy Ethernet does not and cannot degrade the sound. It will in severe cases cause gaps in playback due to buffer underrun as the receiver discards frames that fail the cyclic redundancy checksum. Basically corrupt digital data cannot get through
@@dannyrichie9743 The job of any decent audio engineer is to make sure that noise is not travelling to the output of the DAC. If they can't do that, I suggest not buying said DAC. No assumption can be made that any source is clean. This is proven across hundreds of DACs I have tested where a noisy signal from a computer over USB produces superlative dynamic range with noise floor well below threshold of hearing. I have also done the same testing over Ethernet.
@@AudioScienceReview If that theory were true then power cables would have no effect on how they sound. However, we know and have proven hundreds of times, that is not the case. Power cables can and do have a significant affect and can create a audible difference with any and every DAC out there. So what you are really saying is that you have yet to figure out how to equate measured data to known audible differences.
@@dannyrichie9743 You have no evidence that power cables make any sonic difference. I can get someone to tell me the sound of a system has changed even though I don't change a thing! By your notion, the system has changed even though I just said I never changed it. That aside, you keep saying the noise is reduced. Noise is trivially measured. I did that and your cable doesn't remotely make a difference in noise level. I also showed through null test with music that the noise level did not change with generic cable vs yours. All of this points back to your perception of sound changing being faulty.
@@AudioScienceReview All of that is total BS. We have confirmed hundreds of times that power cables make a difference. The whole industry knows it. The differences are easily demonstrated. You also confirmed that our cable reduces noise. No going back on that. If you haven't figured out how to measure what the rest of the world clearly hears then just keep trying. You'll figure it out eventually (maybe).
@@freone111 as long as you keep the right power cable on it and have it elevated the proper distance from the floor should sound as good as any McIntosh or Accuphase.
I prefer the Inuit cables which need to be kept at a 15 degree inclination, with the highest end at the amplifier. Reversing the inclination tires out the electrons, causing a fatigued sound.
Dude, your power amp amplifies noise coming in through the PSU? Better replace the PSU because it's broken, I guess? SMDH on all this garbage. XLR cables are needed in pro audio, expensive power cables, however, are not. Because they do nothing for the sound.
Well, Nelson Pass supplies his equipment with what he calls “appropriate power cables” which are basically standard, but quality cables. Not in $$$ range. My Accuphase came with pretty regular power cable. For some reason I trust Nelson and Japanese more…
if this is for AC power wouldn't' tit be better to plug into the outlet closest to the mains coming into the house bypassing the terrible cable that runs to other outlets? A chain is only as good as it's weakest link.
Such a huge amount of useful info. Thanks Danny. Also just to note, I changed all my Receptacles for my audio to the hospital grade, and used a 20 amp circuit. That alone made a difference. Great stuff.
As a design engineer, recently retired after working 35 years in the valley, my experience is that the types of engineers who fill these comments sections with vitriole are the 95% of clueless engineering grads who couldn’t plug the right end of a power cord into a socket. I should know, I’ve fired enough of them.
I didn't believe all cables sounded the same.... i just noticed thay when i had to use an extension cord in a pinch as a teenager, that it sounded the same as the higher priced popular mechanics cable. Later in college i had a guy quickly change cabkes for me between a budget pair and a multi thousand dollar cable... no difference. Last year in Texas listening to a D'Agnostico and Wilson setup, I was able to hear an issue with a DAC (later confirmed to be a firmware issue that caused some distortion on certain notes) that the participants noticed after I pointed it out and played the right part of the songs to highlight it.
Frankly I don't really care if cables change the sound of an audio system or not. The biggest differencee in sound quality will ALWAYS be the recordings you use. That's why the guys at audio shows still use Steely Dan and Dianna Krall recordings etc. Seek out better recordings not better gear. The value impact is a thousand times greater.
6:00 It blows my mind how a guy with a channel named *Audio Science Review* doesn't understand that a circuit needs to be closed to conduct a test like that. Either he's full Dunning-Kruger or he's intentionally dishonest.
I don’t think it’s a Dunning-Kruger effect or intentional. I like Danny and Amir. Amir is doing his best to test audio gear… taking it for the team. Danny is doing his best to make audio gear with value engineering. I think they should collaborate and make products that are indisputable.
@@epi2045 Look, I think that Amir is advancing his knowledge and appears willing to learn and grow. However, especially in his earlier videos, he exhibited a very poor understanding of certain concepts yet he reported on those concepts with absolute confidence and certainty which is in essence the definition of the Dunning-Kruger effect. But here's the thing. Most working professionals go through a Dunning-Kruger phase. You either learn to embrace criticism and grow OR circum to pride and stagnant.
It's funny that some of the best recordings where done way before So called High End Cables where around / I've Listened to Master Tapes from Studio from the 1950-60 There was not enough noise leve; after Put onto Vinyl to worry about.
Always learning something from your videos. My hearing thanks you for explaining when to use an L-PAD....although after implementing it and doing some measurements, looks like a notch filter would have been better. Also based on one of your videos.😁
Just read the comments on Audio Science Review and they completely rip Danny a fresh one. Destroy his woo woo logic with facts and figures! And SCIENCE Use the cables that are provided with the gear yall!
Since you always measure your speakers to prove a point, which is great in most cases, why dont you show detailed measurements of your claims about this power cable?
@@dannyrichie9743 Pretty simple: you say noise is reduced. Show that the mains AC power noise is reduced and the same has happened in the output of the audio gear. As for layering soundstage, that is due to channel differential on either level of timing. In other words, the musical signal itself is modified. I showed in null testing this did not happen. But you are welcome to show otherwise. But I suggest first doing a proper blind test with half a dozen audiophiles to make sure said effects are real and not what you imagined with full knowledge of what is being played, or good guesses.
@@AudioScienceReview yes Amir you are the clever guy, all the rest are stupid that spend money in cables with no return, are you so stupid to believe that others spend money just for fun ? Yes, I believe you are.
Great job Danny , spot on observations . Unfortunately you have called out a self proclaimed King of measurements where measurements triumphs music listening all in the name of pseudo science and world of 1/4 truth taking over the whole truth , it is rather sad but I can understand that specially engineering background people are always looking for black on white, zeros and ones answers ... Unfortunately music is analog at the listening ear level and there is whole range of grey between black or white and some will never be able to accept it and move on to happy music listening not measuring first and last . I guess it is some form of "professional disease" and Amir is creating the market for his own altar where he is the self proclaimed truth and saviour from his favorite enemies: snake oil, placebo, rip off, etc.
In the car audio world, they always keep power/ground cables separate from the speaker/line cables. If they have to cross, then it should cross perpendicular.
The entire body of the car is connected to negative, or ground as you refer to it. How the hell do these cables you mention run perpendicular to the very thing are enclosed in???
@@paulb4661 you have probably no or any experience troubleshooting noise in a sophisticated Car Audio. I will suggest to do skme research and stop your sarcasm.
Any power supply that cannot filter out induced noise through the power plug is a wholly inadequate power supply. Which does not surprise me at at all when so many people say they can hear a difference. Power supplies are not the main focus in a lot of equipment. Even so-called "high end" audio equipment often have poorly filtered power supplies, will run signal wires and traces right alongside power and even high frequency data lines. And I've seen amplifiers selling for many thousands of dollars using unregulated power supplies and no high frequency bypass caps at all. If the PSU cannot filter out unwanted signals induced through the power cable, the problem is with that PSU, not the cable. The PSU is junk, not the cable. This is not to say a low resistance, high current capacity, and well shielded power cable cannot help. It most certainly can. If the POS PSU cannot filter interference, then you can minimize the interference the power cable picks up. Cheese does not end with crossovers and connectors. We have people like GR Research calling out speaker makers for the cheese they stuff into speakers. But we don't have anyone calling out companies for the cheese they stuff into amplifiers, CD players, DACs, etc.. Perhaps this is why I find so much cheese stuffed into even very expensive equipment.
Interesting perspective, however you do overlook the fact that power cables can assist in dealing with noise on the supply. It is common mode or differential mode noise on the supply. It is always better to put less noise in than depend on the filter components in a PSU alone to deal with it.
@@indiakilo3929 Agreed, which is why I like shielded power cables. And not just to reduce induction, but transmission as well. And let's face it. In my "perfect world", every power supply would be inside a well grounded faraday cage that extends all the way to the plug. I occasionally see an amp that tries to isolate the psu, but I more often find no effort to isolate the signal path in even "high end" equipment. Just this January, I cleaned up and modded a pioneer CD player with power supply wires zip tied together with wires that carry digital signals from one board to another.
