No One Knows If This Actually Works 

I get it, we all like having certainty, it feels comfortable and safe. But there is also value in uncertainty. Not knowing if the totem keeps spinning, or if it falls over in Inception (2010), opens us up to considering more possibilities. Being in that state makes us wonder about ourselves and the universe. No one knows if the subject of this video actually works. There are ongoing debates and all sorts of tests that have been done. It's been over 40 years and there is still no definitive proof one way or the other. One thing is certain, many people did buy these. I think I presented a decent argument as to why that happened. Thank you to everyone who decides to leave a comment. Even more interesting to me is the uncertainty surrounding all this. I think the way people choose to respond to this video tells us much more about the psychology of the person leaning the comment than we may realise. I appreciate everyone for watching. And even if I can't respond to every comment, I make an effort to ready every one, thank you. "Certainty is an emotional state, not an intellectual one. To feel certain, the brain must filter out more information than it processes." - www.psychologytoday.com/intl/blog/anger-in-the-age-entitlement/202109/the-epidemic-certainty

I had one of the TDK demagnetiser cassette, the exact model you show in the video. The magnetic flux generated by the cassette is minuscule when compared to the wand-style, classical demagnetiser, but the frequency isn't 50 / 60 Hz, but it is in the audio band. The flux generated by the cassette is 100 times higher than the field induced by the rolling magnetic tape. I conducted some tests with the TDK demagnetiser. You can verify its efficacy with a CrO2 reference tape with a 10 KHz note. The amplitude of the output is 15 - 20% higher after 4 or 5 demagnetisation pulses with the TDK cassette. This is because a magnetised head core (caused by playing CrO2 and Metal cassettes) limits the reproduction of the higher frequencies. By the way, it is difficult to evaluate the functionality of the TDK demagnetiser without proper instrumentation, because the ear can't pickup a 20 dB difference at 10 KHz or more. All in all, yes, the TDK demagnetiser works. It is useful? In a professional setting, where the audio equipment is properly calibrated, yes. As last note, the TDK demagnetiser cannot recover a magnetic head after an accident - when somebody intentionally put a magnet in contact with the head. You need a wand in that case. Regards, Anthony

This is a certified Techmoan classic.

I was lucky enough to find a new in box Realistic tape head demag which I used to sell while working at Tandy's back in late 80's :) I have used mine once on a Sony CFD-5 boombox (first with a CD player built in the D-50) It had a lot of hiss and the demag really helped other than that it has not been needed. There is a guy I have dealt with from Romania his name is Segui and his name on Tapeheads is magnetic Blood. He restored my AIWA PX10 walkman and I he recorded some albums for me (Queen, Australian Crawl, 1927 Ish and others) onto 2 x TDK SAX-90 chrome tapes using one of his very high end tape decks ( Nakamichi or Revox) Playing in my AIWA PX10 and Sony DD9 Walkman they sound fantastic. Better than the cd version.

A magnetized head erases highs from your tapes as you play them and it increases noise when recording. Not long after that TDK demagger came out, I tested it using a gauss meter to see if it actually reduced the magnetism of a magnetized head. It did next to nothing - too weak. A real demagger reduced the field to below what the meter could read.

Speaking for me, I still have my TDK HD-01, It works well to de-magnetized the tape heads on my decks, but one still needs to remember to clean the heads, the capstan and the rollers. Also, be sure that you have turned off the audio. This makes a horrible noise if you use it with the sound turned on.

I was asking techmoan if he maybe could make a video about these a year ago, sadly no response. I have MAXEL brand and using it.

I have two HD-01s. The older design, I believe, is better made, but both work. As for how much good they do... I'm not sure. Can't hurt anything, though. The clear housing is of little significance to me other than that it shows the parts. Otherwise a person might not be convinced there was anything functional in it.

Love the narration and the cinematography! So relaxing!

I had one of these! Used it on my expensive cassette player and I _still_ have no idea if it did anything or not. Sounded the same before and after.

This topic is for TechMoan he will solve the problem, anyhow thanks for lovely take on head demagnetizer witch i own exactly same one from TDK and few other ones but never used it.

Some cassette decks made by AIWA had automatic tape head demagnization built into the tape deck. All you had to do was power it on, and the process was done in seconds.

I remember Radio Shack had one demagnitizer that had a permanent round magnet in it that was rotated by a cloth tape that also cleaned the heads. I think these did more harm, magnitizing the head than removing any. It made a weird rumble sound over the audio out that sounded like the traveling cylinder space probe in Star Trek 4, which I really think where they got the sound effect from lol.

Just picked one, still in ordinal packaging….€30. Lost my ordinal one about 30 odd years ago. I think they do help, that depends on the cassette deck sendust and ferrit heads (Sony TC-K 75 etc) or ferrite and ferrite (TC-K 81) also JVC TD-V6 and the nakamichi BX series……whereas decks such as hinari, saisho, Waltham and etc would have zero benefits. Carlos Fandango in his MK4 cortina with argos special stereo and good man’s parcel shelf spears….would have no benefits….other than doubling the value of his worldly goods.

I have been servicing tape decks for several decades, and I have a 110VAC demagnetizer I use every time I clean and service a deck. Most people will not notice the degradation over time, but it is a reason their tapes go bad. Yes, there is a hiss that can be heard when the head is magnetized, but the magnetization can cause the tape to be erased over time while it is being played, and in the end, the tape will be unplayable. These cassette tape demagnetizers were sold to do what the AC units did, but they didn't get the job done, if the head was seriously magnetized, and was the reason I kept my AC unit.

I once tried to erase a recording on a normal bias tape with a wand demagnetizer and it couldn't even ease the tape. This was a popular lite up with transparent plastic and a metal rod though the center. Other types like this would work but definitely not this one. I use an older Sony RTR type to demagnetize my heads now. Not only does ths demagnetize the tape on contact but it also erases the spooled tape in the cart.

A man who speaks the truth. I had one of these back in the day and I never noticed it making any difference whatsoever. It's as noticeable as having one extra hair on a broom, ie, no difference whatsoever. But they did look cool.

I remember seeing these in the 80's, never had one though. Always kept to the much cheaper tape based head cleaning cassettes. I particularly remember one with a green tape inside that should have been able to demagnetize the head. I don't think it worked though. Back then I would've loved to have an electronic demagnetizer. Btw, for some reason I was remembering these demagnetizing cassettes as having little less electronics inside and a green circuit board (or perhaps the later 80's models did.)

Having used one I put this in the category of the $100 HDMI cables some vendors try to push today.

I think the transparent look is so people can easily recognize they're not regular casette tape in case the stickers peel off

IMO magnetized heads are a problem not in a sense that the sound becomes worse when playing, but rather the head being magnetized acts as a heck of an underpowered permanent magnet, akin to an erase head in a very cheap recording mechanism - thus any of the tapes you run past it will get a decrease in signal level and an increased noise floor. By how much - that is an open question! :P On a Metal tape like you showed, or even Chrome tape, I think it would be negligible due to how much coercivity they have, compared to Normal (ferric) tape - they need much higher magnetic flux for things to start moving around. It would make sense in an industrial environment on open-reel machines where a single tape head can see multiple kilometers of tape in a day (wait that sounds like my old home when I was in a mood to listen to something) and the tapes themselves were supposed to be stored as best as possible, but a wand type demag would be more likely way better for those. Not to

get yourself a gauss meter, and you wil know

I'm sorry, maybe I missed it. What was the point of this? Was it just to pose the question? Was it a way to exhibit slick camera use, angles, and lighting? I sincerely thought you were going to show if it degauss the head, or showed some response changes. Slick video, no substance

Obviously you can't just post videos here and not write what the "banging tunes" are in the description...

haha back in the days when I was a curious teenager, cassette players were my signal tracer by using their sensitivity. I could listen to watches oscillators ticking :) the same with AM radios

It does work, They had two models the HD-01 and the later unit the HD-30 that worked better for decks with logic controls. I tested the HD-30 by magnetizing the tip of a small screwdriver and then pushing the tip of the screwdriver to activate the HD-30 and yes it WORKED the screw driver WAS TOTALLY DE-MAGNETIZED.

I had a TDK Electronic Cassette Head Demagnetiser in the late 70's! ... But, I found a MUCH BETTER way to improve the sound quality of my Hi-Fi! ...... ...... Ditch the 1963 Philips Dictation System altogether! 🎶👍🤣 EDIT: From personal experience, I can say the device is INEFFECTUAL, because of the weedy power source; a watch battery! ... A proper demagnetiser requires MAINS ⚡ VOLTAGE! Voyager DOESN'T work on a watch battery! ... It's a nuclear battery! ... The TDK Demagnetiser would operate for 50 million years on a nuclear battery! ... That's a LOT of demagnetising! 🤣

The voyager space probe runs on radioisotope thermoelectric generators, or RTG's. They are nuclear batteries that run off the decay of plutonium, but even they are running out of fuel and voyager will soon go dark forever.

I had one of these in the '80's...don't know if it worked but my Nackamichi tape deck worked well...a very high frequency for 5 -10 seconds...amp off,unplugged...snake oil ?...my tape deck was better than average but not a qualified expert...wow, 20+ years since i last seen one....kool..i used isopropyl alcohol to clean the heads first with a cotton bud every couple of months depending on use of tape deck....neat

Just recently had the chance to see this exact TDK demagnetizer. Very cool and interesting indeed.

Both the record and play head are electromagnets. Demagnifying them makes no sense. This does absolutely nothing. It doesn't destroy anything. But then again, the 80's had Amway. The era was rife with snake oils.

The principle is certainly sound. I use a degausser on my Ferrograph open reel tape recorder. If you fail to do so then the heads can become badly magnetised and it impacts performance hugely. Not just like hi-fi nuts going on about nuances, no actually makes it work really badly. However that's a mains operated device so the energy available is hugely more than this device which uses a watch battery. One of the things that can cause magnetised heads, is the use of cheap recorders which have a permanent magnet erase head and/or DC Bias on the audio head. This causes tapes to have a large component of magnetised particles lined up in one direction, which then magnetises heads and other magnetic components. Note that head devices like this absolutely must not be used on Philips DCC cassette decks, whose magneto resistive heads will be instantly destroyed by it.

I use mechanical watch demagnetisers and understand the principle which is as you describe this. Though it’s a ton of current required to work on a watch and I’d expect more then a tiny cell battery could muster. I wouldn’t expect the magnetic field generated to by audible either, with the demag I have it’s 50Hz mains AC.

I noted that the demagntization waveform is clipped when the demagnetization cycle starts. Is the clipping due to overload in the computer's microphone input circuitry, or is the core in the playback head used for this experiment going into saturation? If the head core is going into saturation, then the head demagnetizing cassette is doing its job. The question that remains is, is there any value in demagnetizing a tape head without demagnetizing the capstain? I can certainly see how these cassette demagnetizers would have been desirable as convenience items for automotive cassette players.

5:53 I still have the red one!! It made a continuous sound and the cogs moved the coil back and forth into the heads so the sound changed in volume. Maybe your tested circuit or the battery had not enough power to create the right signal so that's why it died so soon.

surely, (unless it can't record) you could feed a signal into your player without a tape in it and perhaps get a stronger effect than playing the signal into the head. though I suppose being an audiophile product, it's almost entirely placebo, like shaving the edges of cds.

Yes , they do work amazingly well , I used to by my records and record them straight on to tapes , and thrash the tapes , so to keep the Vinyl good , point is , tape heads got dirty , do cleaned them , but that after a while didnt restore sound , But when useing a Demagnetizing tape every thing came back to perfeck, You need to clean and demagnetize you tape deck heads regulaly

I suppose that those ought to work in theory. I am sure they were tested in Japan. I also suspect the batteries in them are weak or dead by now. That needs attention. I would certainly trust a TDK made in Japan device over some Chinese version or mystery item.

I have one of these and have used it many times. Most times it was preventative use. The deck still sounded fine. But recently I had a deck that could not make a good recording. So I tried this and bammm, the recoding improved dramatically the deck could then could record and play back high frequencies.

My understanding is that head magnetization was generally more of an issue on older decks, presumably at least in part due to different metal used in the heads, and perhaps circuitry design. It seems likely magnetization often wasn't caused, or not only caused, by the tape - there could be far higher electromagnetic radiation from electrical components. Personally I think magnetization is far more likely to be caused by electronics, or by accident, such as bringing magnetic screwdrivers into contact, powering off the deck during recording in some cases etc. I can't see the tiny fluctuating(equally north & south) magnetism from tapes doing much. 2 head decks(where the record & playback heads are together, unlike 3 head decks) reportedly perform their own demagnetization, just by the nature of how they work in record mode. Recording mode will send out a much stronger electromagnetic signal to record onto the tape, vs the long term but extremely weak signal being read from tape in playback. *If* this info is accurate, it seems entirely plausible the demagnetizing cassette here would work...on decks that actually need it. As a note, the battery in this tape could easily have been replaced in the past, without opening the case. The battery has a small cover that can be undone. The cassette here may also had enough battery power to activate the LCD & generate some signal, but may have also been lower than with a new battery (& possibly could've done with replacement capacitors) The manual also lists the pulse as lasting about 0.3s (300ms), not 120ms, so they may indicate a lack of battery &/or capacitor charge. The oscilloscope image in the manual also shows a much more pronounced curve, though that could just be different axis scaling. The frequency shown here pretty much matches the 1978 manual, which lists 630hz. It also lists the maximum flux density(ie the "power") at 220 gauss. I dare say people definitely did know if this worked or not when it was originally sold, presumably including magazines at the time testing them. I find it difficult to believe TDK (and other reputable brands) would have made them if they were never any use. TDK's entire early history was based around magnetic material & then audio tapes. An actual test would be simple now, digitize & compare waveforms of tapes recorded before & after, and played before & after. There's no debate, for that particular deck, if the results show a difference. In 1982 these tapes were sold for $14 in a magazine, equivalent to $48. The same magazine also has a good article on (de)magnetizing: www.worldradiohistory.com/Archive-All-Audio/Archive-Audio/80s/Audio-1982-09.pdf

Just recording a sine wave audio signal, starting loud and falling in volume to nothing, ending at the zero crossing point should do the same thing if the record head puts out a strong enough signal to cause the problem in the first place.

??? and you did not make some experiments to see if it works??? What's the point then to make such a video??? Just get a few tape decks, measure their noise level, record some audio, run the demagnetizer (with a new battery) and do the same tests again and compare. You even talked about how much people argue if they work... and then you do not find it out... omg...

It's not needed very often with a domestic cassette deck. Cleaning the heads frequently is what makes the biggest difference. Also, aligning the head is sometimes makes a massive difference, especially on machines picked up second hand. The mains powered hand held demagnetizers probably do a better job, but in some cases they can be difficult to get near the heads of certain cassette machines.

I’m surprised you didn’t do any comparison testing with it - would have expected at least a sound quality test with a before-and-after on a tape deck or two.

I had the maxell. Don't know if it really made a difference. A cotton tip with alcohol for sure did a lot more.

Nice Video! The Tape looks cool indeed! One Question: Whats the Song called playing in the Background?

I bought a TDK HD 01 earlier this week and tested it on my "Aiwa AD-F810" equipment. The light turns on, but I don't see the VU indicator moving and I also don't notice any improvement in sound after playing it for at least 10 seconds. Do you know if it's possible that in 3-head decks it may not work properly or even not work at all with this cassette? Is there any other way to confirm that it's working properly without having to record a sample through Audacity? CHEERS FROM ARGENTINA, AMAZING AND RELAXING VIDEO !!

I still have my Radio Shack tape head demag, which I've had since the 1980's.

I have one and it works .Also you can use an old school transformer type soldering iron works

Hey, what's the 'Bangin' Tune' 😮🤔😁

Hello everyone. I have a problem, need technical assistance! My deck, pioneer ct s650s 3 head, on recorded level 0dB, 400Hz gives me on output of 775mV. The same recording, on the other pioneer and Yamaha decks gives 580 mV and 520mV, with VU readings of more tha 6dB and 4dB, respectively . Can someone measure output of your deck, I do not know where to look anymore??? Measurement done with Metex digital instrument which shows frequency and dB level along with Voltage.

So, it's a toss up between this and blowing on the cassette like it was a Nintendo cartridge?

This demagnetiser could damage the sensitive front end amplifier .

Well, if it were me Id test for SNR before and after using this thing.

I had this album. It wasn't so good. Everytime I put it on it blew the speakers

Thank you very much, good video, in those years I had a TDK very similar to the one you provided, it did work or at least it seemed that way, I had a great compilation of cassettes, I recorded many on a great nakamichi dr-3 deck, I used that cassette for degaussing regularly and it gave me a different sensation in the Audio, well regards and excellent video, now I technically understand how this system works thanks to your video document,🎩

Wasn’t familiar with these. Very neat niche product.

Fantastically created video.

what music are you playing around 1.26 ? please

Эта кассета не сможет выполнить свою функцию на некоторых деках.

you can easilly build a demagnitizer, witch is what i have done. i demagnitize my stuff anyway because i dont wanna risk worsening my tapes. and hey, demagnitizing fixed my vcr once, soooooo i think it works

of my god !!! an endless torrent of scams !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

If it worked the measurements would exist and be repeatable

You know, you could’ve MAGNETIZED that CD-to-Cassette car adapter’s head (with a magnet) first, then de-magnetize it with TDK’s gadget, thereby finding out what every audiophile is longing to find out for over 4 decades now! Just saying, though🤗

I did not like this video. I was expecting you to provide an audio sample before and after demagnetisation. You didn't do that. So this well producted video is a bit useless. Sorry.

You may have forgotten about the radio shack realistic demagnetizer cassette which WASN'T in a see through cassette housing

I used tdk on a 40 year old tape beck and after it sounded a lot better

3:15 -I mean, this looks like a way more complicated means to an end, than other variants of tape head demagnetizing cassettes I have, or had, which have just some configuration of a permanent magnet imbedded in a plastic wheel, which spins behind a special cleaning strip tape, which you saturate with a bit of 91% isopropyl alcohol, prior to use. I don’t see why that in the video, wouldn’t work, as a demagnetizer, in theory, but, there’s far more simple head cleaning/demagnetization cassettes, which perform both maintenance steps, simultaneously, and cost a fraction as much. I can confirm, that the cheaper dual maintenance cassettes work excellently, and rarely require more than a single pass, unless the tape head is really filthy and magnetized, in which case, just run as many passes respectively, until it’s satisfactorily restored. ❤ In the case of where you can access the tape head, directly, with a Qtip, behind the door, pre-clean the tape head prior with isopropyl alcohol, prior to running the dual-maintenance cassettes, because this will help prevent the cleaning tape medium in it, from fouling with residue, sooner than later. Dual maintenance cassettes are invaluable for cleaning side slot loading cassette mechanisms, like you typically find in older car stereo systems because accessing the tape head directly, without taking the whole thing apart, is a lot more difficult. Plug in tape demagnetizing tools, like the ones I use for RTR player/recorders, aren’t usually as ideal for cassette decks, because of limited accessibility to the tape head, itself with the tool, and you only have a handful of seconds to use the tool, before you must unplug or switch it off, or the tool itself, will self destruct, because it’s essentially just a crude AC electromagnet with a polymer insulator over the tip. Basically, if you drag your feet too long using it, it’ll heat up like a soldering iron, melt the polymer insulator, and possibly short out the internal windings, breaking it, and/or posing a fire/electrical hazard.

This, to me, screams that it wants to be the heart of a hacked-together kick drum synth.

so it's better use demagnetizer wand than this?

If the tape head was becoming magnetized to the extent that it was affecting the audio, it would be damaging the data on every cassette that went through it, which no one who promotes these has ever said. The tape has a *much* lower coercivity than any material in the tape deck and so would be incredibly sensitive to this. Also, there are next to no ferrous metals in the tape head, so next to no hysteresis, so no significant residual magnetization. Additionally, DC bias on the tape head would not cause hiss. Stainless steel is incredibly difficult to magnitize and the little bit of magnetism in the domains of the tape can not do it. BTW...the pulse is clipping very badly on that TDK and could potentially cause damage even with the volume down. Bottom line, tape companies made these because consumers wanted them, not because they were useful. Oh, and this would be so easy to debunk with a magnetometer.

Super super super 😊😊😊

I got one of those XR tapes in a lot of used tapes and it has just rubbish on it. I am curious to see how good the sound quality would be with that old metal tape, but recall warnings about metal tapes wearing out the heads faster. As for demag heads, I use one of the manual tools. I abandoned cassettes decades ago. Then I got a quite good Sony deck for archival stuff. And I am surprised at how good a properly recorded cassette on good tape can still sound. Since there was so much variation in tape quality and tape decks you must strive to get the best out of this analog source. Just like vinyl records. Play them on rubbish turntables and not get all the best.

I had a couple demgs, not the one mentioned. I had totally forgotten this! And yes, demagging your cassette heads helps a great deal. And I just remembered, old crt monitors, some had a demag.cycle because residual magnetism from normal operation would distort.the.video.on the monitor.

Given many people felt it didn't work, the clear case showed that they weren't just buying an empty cassette. That being said, we've all seen devices that look like they're doing something but all they do is turn a light on when the tape head engages ;)

I had the exact same model, way back in the 80s. It definitely brought the top end back, on a well used hifi deck.

Well, back in the '80s these were mostly viewed as a novelty However, demagnetising the heads of tape based storage for microcomputers was a standard part of servicing and repairing them. It's highly unlikely that this was needed in most machines though as the heads are mostly stainless steel and paramagnetic rather than ferromagnetic Cleaning the ferrite dust from the heads was much more important though as that's designed to hold a magnetic flux

The first sound equipment I bought was a Sony double cassette + CD player. I played tons of tapes there but after some time, the recordings were being poorer and poorer no matter I cleaned the heads. Once I made an experiment erasing a whole tape. Curiosly the next recording I made wasn't too bassy, noisy and limited crunchy trebles. That was the time I read about residual magnetism on tape heads. I bought the same TDK model at a local flea market (more or less five bucks). At first, I didn't note any big difference in sound quality, except the noise floor was reduced substantially but recordings were improved 100%. After many years educating my ears and playing tapes I can assure you this little machine does its job and it worths every cent you spent on it.

It seems to me that it worked like a degaussing coil on old TV screens. Technicians had a physical (and big) coil that was used to demagnetize the CRTs of the day. They tended to get a dark spot in the middle of the screen. The coil removed that.

In the 1980's I used one of these and to see what was happening I inserted the demagnetizer and pressed play on my cassette deck and I displayed the output on a CRT oscilloscope. I still have mine. My main use for it was pressing the demagnetizer head to watch the LED light up. In the 1980's it cost £7.95 from Curry's If you paid any more you were mugged!

Nice but you didn't prove that they don't work, yet you gave a conclusion "that their main function was just to look kool". There was no measurement of magnetization/demagnetization.

Honestly I was expecting at least a test on a real player with before and after results. I'm a little disappointed, but I enjoyed your video anyway.

I want one even tho I don't use tape anymore just want one cause it looks cool and gives me bragging rights in the pub yes it's sad but I don't care🍻🍻🍻😊

I purchased one back in the late 80's, it came in a nice plastic case that also had a wet type head and capstan cleaner. From memory, I believe that it was the Music way brand... I still have it somewhere, probably used it once after I got it, couldn't notice any difference before or after. I noticed that your TDK one only produced one short blip while I specifically remember my one was very audible and the sign wave signal will continue until you stop it... But you are definitely correct, apart from the TDK MAXG and it's metal frame which was a very cool tape, the Demagnetizer tape was the coolest thing that I had ever seen and the primary reason why I got it....

3:29 I doubt that battery has never been replaced once in 44 years, I mean, the battery compartment does have a door on it for easy replacement... unopened commercial batteries in their packaging lose charge to the air over time, let alone one used to drive even a simple circuit like that...

did anybody even think of actually trying it out

Here's a tip, just run the deck in record mode for a few seconds Then, swab the head with isopropyl alcohol. It's worked for me for 50 years.

Observational.....surely there is a way to lab test these......

It should be simple to perform some tests before and after the demagnetisation to tell whether it's really working as intended.

Back in the day, I always wondered if these were actually useful tools to have or just what we would now call "audiophile snake oil". But I never had enough information to work out which it actually was.

I have a soviet version of this device - "ДМГ2".

I had one that looked just like this in the late 80s. I think mine was Boots-branded in the days when they sold records and audio equipment. I didn't think it looked cool. It probably wasn't hugely expensive but I resented every penny I spent on it, not knowing for certain if it was necessary, did any good or damaged my equipment. I only bought it because the manual of my cassette deck told me to demagnetise periodically.

If you aren't sure that this works, then you shouldn't be making tech videos😂

I am a tape deck technician and I have and use one ot this TDK device bought brand new in the 80s, I think. Since then, I use this on a regular basis but, sincerely, I can´t perceive any improvement in the sound. To be completely sincere, in the 80s I noticed some improvement in cheap devices as entry level car cassete players and all-in-one compact radio and cassete players. However, since the end of the 70s most of the tape decks started to use heads that was made of some type of aluminum alloy that was almost imune to magnetization and, this, way, they simply do not get magnetized at all. That is my perception, but it was tested in thounsands of tape decks and players along all these decades.

Yes, cassette de-magnetizers do work.

$100 when the video was made is now $110.

But there was no scientific measurement of before and after? No audio tests… no gauss meter measurements of the tape head presumeably wity magnetism and without? 🙄🤷🏼‍♂️

I need to know the BGM for this video.

Hello, Is there a Head Demagnetizer cassette device, like this but, for VHS machies please?

What is the name of the actual "banging tune" that we hear in this video?