Is the FM300A Output Stage the best Amplifier at all ? 🤔 (English)

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This FM300A Output Stage costs little money and sounds gorgeous,
a nice treat that works on (nearly) any speaker possible!
Thanks to SnakeOilAudio for this valuable hint!
I am not sponsored by anybody, this is no advertisement!
This Video in Deutsch: • Ist der Klon die beste...
Sound Samples with „Le Petit“
• Part VII: How does it ...
Snake Oil Audio talking about the FM300A clone:
• Günstiges High End? Gi...
Picture of cap sound ranges found on
www.lampizator.eu/fikus/CAPACI...
Picture of Klaus Kinski made by: Corbis
Lips Png Clipart - Heart Kiss Lips Emoji,
License:Non-commercial Use found on PngAAA.com
ru-vid.com?even...
Music from Apple

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31 янв 2023

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Комментарии : 183

@thomasleong9401 7 месяцев назад

What clone maker brand is your good clone? Breeze or .....thanks

@iam_mad 7 месяцев назад

I have good experience with this store, and I recommend You to get the version with 2 toroids, it has a lower noise floor. de.aliexpress.com/item/1005004202116642.html

@wyup 7 месяцев назад

BRZHIFI Store seems to sell the same model for 74€ cheaper

@iam_mad 7 месяцев назад

@@wyup it is always good to safe some money, I guess?

@wyup 7 месяцев назад

@@iam_mad It looks BRZHIFi Store is the official manufacturer. Your viewer Ralf Peter visited that factory in China and bought one on site!

@demart28 2 месяца назад

@@iam_mad FM300A with two toroids? Also in the shop with the link above they do two versions of this amp one is the golden version (all aluminium) and the other classic one, but I'm not sure what do you mean by FM300 with two toroids...:)

@jonpatrick66 Год назад

Thank you for your review and observations. Beautiful inside and out.

@JOEKDAH Год назад

Great info, nice work on the presentation and very funny 😂. Thanks for your inspiring work.

@user-fe4jc7cb3v 3 месяца назад

I listened to your program and was very impressed by the FM300 amplifier and I ordered such an amplifier, I hope I was not disappointed

@iam_mad 3 месяца назад

Let us know, how You experience it! 😉Best regards, Jürgen

@Broadmaynewood 8 месяцев назад

Thank you for your review, I have just ordered one. Hope it will arrive next month.

@iam_mad 8 месяцев назад

Congratulations! 😊 Let us know Your experience with it, when You have it! 😉

@Broadmaynewood 7 месяцев назад

Amp delivered today, have just got it up and running. Sounds good straight out of the box ..

@iam_mad 7 месяцев назад

Have fun with it and enjoy the music! 😊

@benjaminthomas8092 Год назад

I am thinking about buying this FM 300 your review was very good Thank You❤

@MasterofPlay7 Год назад

I bought one already, very nice

@Geoduck. Год назад

This was fun and interesting thank you for sharing. LOL out-takes were a hoot.

@iam_mad Год назад

Thank You! ☺

@xiretsa9166 Год назад

Hi Jürgen - you're completly right concerning the FM300A - so I'm not the heavy-high-ender in HighFidelityCosuming, this is a realy good amp! I love pidgin-english genauso as u do!

@FerdinandII Год назад

Love the HK 700 series components in the background...

@Anatoly_Panchenko Год назад

It is interesting to see the review about FM411 or FM711 clones.

@alaingingras7224 7 месяцев назад

Hello, ! Just got [well I know old news ] The 701 ! Put in a West German 6dj8 a in the only position .The sound you described is spot on !.Massive bass on a 4"" speaker ! And more !The mids are silky.Even with a Modi... No amount of praise could describe the happiness your mentorship has done for me ...

@iam_mad 7 месяцев назад

Alain, I am very happy, You can have as much fun with the MP as I have fun with it... 😉👌👍

@alaingingras7224 7 месяцев назад

@@iam_madAnd I have to add that there was a 120hz hum when preamp connected but off position .I did what you recommended [take the ground pin and condemn it on the pwr cable] and voila ! All volume to Max and just a whisper that cannot be heard @ 1 meter !

@johnsnowlow1883 5 месяцев назад

Very useful review. Helps buyer remove the guess work and save money. Do more English video of Chinese hifi, your hard work is appreciated.

@iam_mad 5 месяцев назад

Thank You for Your comment! 😊I will soon bring the MP-501, yet the best Tube Amp I had ever, and it easily competes with the FM300A. Best regards! 😉

@johnsnowlow1883 4 месяца назад

@@iam_madhi may I ask what is mp501 ?

@iam_mad 4 месяца назад

@@johnsnowlow1883 Sure, the Musical Paradise MP-501 musicalparadise.ca

@christophergaus3996 Год назад

This was clever, well done!

@iam_mad Год назад

Thank You! ☺

@alaingingras7224 9 месяцев назад

I watch this video again and am purchasing this amplifier. I trust your hearing !

@iam_mad 9 месяцев назад

You are not the first one 😉 wich speakers do You have?

@alaingingras7224 9 месяцев назад

@@iam_mad Hello,I built 30 liter boxes 1'' thick FF125 WK B.R. The sound is bold with air in the midrange [brushes on the skin of drums]Highs are sparkly...I like them ...

@alaingingras7224 9 месяцев назад

Besides the WW125 WK,I have Philips 1982 -Ad12250 woofer with AD2160 sq8 Midrange with a AD11600-8 tweeter in a 40 liter box as dictated in a Philips speaker application journal of course with the I think WSP-700- 2300 crossover...@@iam_mad

@alaingingras7224 9 месяцев назад

It's like you said a cucumber ,but what if?

@iam_mad 9 месяцев назад

@@alaingingras7224 The Bumbel-bee I did build has 39 liters volume, so Yours is a bit tighter then, but it must sound great! Later I found an 2nd hand FE126E and stuck it into the bumble-bee, it sound so phantastic, very hot!

@user-dh2te2cm2d 5 месяцев назад

i have one, but changed some capacitors for better sounding ones, but it''s a pretty good build for the money

@iam_mad 5 месяцев назад

Thank You for the comment! 😊 Which Cs did You change? I guess the coupling-Cs?

@danyfly1840 11 месяцев назад

Hi Jürgen Many thank for your Great Vidéo and also humour ! 😉 Following your recommandation I ordures 2x Fm300A clones and 1 x MP-701 MkII for testing. Just a question would tout have the type of power transistor used on the FM 300A clone but also on the original FM300 A? I’m asking because the number has been erased on my clone version. Best regards Dany

@iam_mad 11 месяцев назад

Cool You got 2 of them! IOne of my followers on the german channel did the same, he has also 2 Fm300... The Power Transistors are NOS from the 80ies, why some of them are "erased" I really don´t know. But Ralf-Peter did open one Trans with the angle grinder, and got confirmed that these are real old Mexicans 😉 I will later bring a video to show how to adjust the bias!

@lglstudiosbend Год назад

QUICK QUESTION: I have a pair of Klipsch RP-8000F II speakers and I need a (new) amplifier. Currently I am just using my old(er) Sony Home Theater Amplifier (STR-DH820) and these speakers are Very Bright with that amp. I don’t mind it for movies but for 2 channel listening my setup is just to bright/hot/has a digital sheen/whatever you want to label it. Speakers are amazing but this is just the wrong amp for them for music. Would this FM300A (in your opinion) work with these speakers and (hopefully) tone down the brightness when compared to my Sony AVR? I see Amazon has the FM300A listed as in stock (I am in Bend Oregon, USA) an am willing to order this if it’ll take care of my 2 channel listening issues. Thanks for any help you can provide - I Love Your Channel!!👏🤓

@iam_mad Год назад

I don´t see the FM300A on Amazon..? I only know it being sold on eBay, but You must be careful that it is the correct one, because there are cheaper versions, that don´t have the NOS transistors and the Hifi-Elna caps. I would not think to compare it to a Sony, since on my German channel some said it is much better then their Accuphase.😊 This is a bare power amplifier, and it doesnt have too much stuff in it to ruin the sound 😉

@kiiiiiiingd День назад

Hi Jürgen so you would say the combination of the Oldchen und the FM300 is a good choice?

@ferchur4833 11 месяцев назад

Hi Jürgen. When you purchased the amp, did you consider the upgraded version that has 2 power transformers? Thank you.

@iam_mad 11 месяцев назад

Hi, no I did not, because I thought of the original as the best choice. It is now althoug a good idea to go for the updated one, I have positive feedback about it from viewers and from the factory (breeze)

@gino3286 Год назад

Hi thank you for the very interesting review I have been struck by one your statement in particular concerning the Canton sound I have always thought that a speaker keeps its own sound signature even with different amplifiers I was clearly wrong How do the Canton sound with the tube amp? Thanks again and kind regards Gino

@iam_mad Год назад

Thank You for Your comment! 😊 The sound of a speaker is always influenced by the amp, but this is much more depending on the efficiency of the speaker and the type of the amp. The tube Amp can show its great sound as more as higher is the efficiency of a speaker. In the case of the Canton, it is a low-efficiency speaker, so it will "swallow" the tube sound. (this is greatly simplified) The solid state amp can show its influence on the low-eff Canton much better, because it has simply the power to do so. (and the high attenuation) The high - eff - speakers show the sound of the Amp much clearer, and there tube amps can also shine. If You watch my build of the Petit (Speaker) then You see a High Efficiency speaker, that has even no cross over. 😉

@gino3286 Год назад

@@iam_mad hi thank you so much for your kind and very valuable advice Actually I am watching the sound check video of the Petit and they seem to sound phenomenal indeed I will watch the other videos on their design and sincere compliments for your excellent work I had in mind a 2 ways speaker with a big woofer and a wide band driver used from let's say 200Hz up but it's a medium term project because i am moving to another home now Speaking of amps i am more a solid state guy for convenience Kindest regards gino

@franziskaklaren4557 Год назад

I'm asking myself which is the matching pre-amp? is there a matching from FM (China)? Cheers Christoph

@iam_mad Год назад

Yep, Christoph, der FM155 oder FM255 Clone, je nachdem, aber ich will etwas anderes, weil mir die Vorstufen nicht so gefallen, deswegen hab ich schon was bestellt... 😉 Mit Röhre und einigen Anpassungsmöglichkeiten, Musical Paradise MP 701 MK2

@maciejchwojnicki4425 8 месяцев назад

Could you explaine how to use fuse in this amp? What audio sorce do you use?(compatibile cd model?) Which speakers could you recommend?

@iam_mad 8 месяцев назад

There is a fuse in the back plate of the Amp, I don´t know the Ampere rating right now. You can plaug any source via RCA jacks and level the volume with the two potentiometers at the front, but there is no remote control, since this power stage is from the 80ies and is all about sound without additions. It sounds great with any CD player, I used several DACs from Cambridge Audio to the famous Philips DAC960, but You could also use any preamp. I have combined it with the tube preamp MP-701 kk2, which gives You a tube like organic sound and more refined sound stage. Speakerwise I heard only positive response from most of known brands like Dali, Kef, Elac, etc. It also shines with fullrange speakers like the Sibelius or the Petit.

@demart28 2 месяца назад

I got inspired by your video and considering buying this amp. Do you have any thoughts on the above FM300A vs clone of DartZeel NHB-108 D5 Pro? They both looks/sound very promising, but would appreciate some help in making the right choice :)

@iam_mad 2 месяца назад

The FM is the mor musical amp, has more near "tube" feeling, best choice for efficient speakers, but will less strongly drive very difficult speakers with less then 4 Ohms and loose bass drivers that need control. Dartzheel is like a power plant, can drive anything low efficient (what I don´t like) and can still make a very good sound, but not such a nice mid tone and bass like the FM. Either You get a really good speaker with the FM or You have the big 3 way or 4 way speaker (difficult to drive) and low impedance / efficiency, then go for Dartzheel.

@demart28 2 месяца назад

@@iam_mad which one would you choose to drive Monitor Audio RS6 Silver?

@thomothomo1078 2 месяца назад

@@iam_mad That is not how I hear it.The Dartzeel clone to me sounds warmer and more like a valve amp.The FM 300A copy sounds more like a good SS amp and can drive lower impedance loads better than the Dartzeel despite having less power.I own the dartzeel copy with the extra pair of output transistors.Both amps sound excellent.which is best probably comes down to speaker matching.The Dartzeel copy is superb with vintage Tannoy Monitor Gold15s.

@goranvuk8501 Год назад

Please Jurgen - do you know the Gain of the FM330A ? I understand, that one can regulate the gain via the two from knobs, but I am still interested if you know the base Gain. All of this because I would like to be sure if FM300A will suit my tube pre-amp (it has gain of 20dB in the Line Stage). Thanks from Copenhagen

@iam_mad Год назад

We have contact with the fab, but it takes time. Just go for the FM300A as long as its possible, the sound is fantastic! I found out, that the MP-701mK2 works grat with it in maximum gain setting. Google "Musical Paradise" and compare it to Yours! I am right now working on the pairing with the "Musical Paradise" wich sounds absolutely fantastic! It is good to have a zero-negative feedback preamp, and keep the volume potis on the FM300A on 50%, then the tube preamp injects the good tomality into the FM300a (wich amplifies VERY precise) Nest video comes soon... (or check my German channel)

@goranvuk8501 Год назад

@@iam_mad Thank you for answering. By the way - I enjoy your videos, even in German 🙂

@MasterofPlay7 Год назад

@@goranvuk8501lol I use the aiyima t8 with the amp, still works wonderfully with that 3d sound stage and tube like sound

@alaingingras7224 9 месяцев назад

It's done ! I have a question... If I can use this without a preamp, then what are the advantage of the addition of the Musical paradise Pre? I like this one too. And not to forget the M.P. DAC !

@iam_mad 9 месяцев назад

Yes You can use it without pre amp, but I paired it with the MP 701, which made the sound even more impressive, but the FM300A is solo already reall close to tube sound.

@alaingingras7224 9 месяцев назад

I cannot wait for the parcel to arrive !The MP-701 seems so simple it has to be great ! Like a wire with gain !@@iam_mad

@floriansorrentino4710 3 месяца назад

Thank you for infos, my speakers have too much high frequencies this amplifier accentuates high frequencies ?

@iam_mad 3 месяца назад

This amp is VERY precise, if Your source has accentuated high frequencies, it will amplifie them, if Your source has no accentuated high frequencies, it will not amplifie them. This is, why I tested the Musical Paradise MP-701, because with the tubes You can smoothen harsh sibyllants.

@floriansorrentino4710 3 месяца назад

@@iam_mad Tanks a lot!

@roumensotirov 9 месяцев назад

Hi, I got the breez audio gold two transformer version, and the sound is great. The output transistors markings are deleted, and they are reluctant to send the schematic. I would be grateful if you could send me the schematic. Thanks for the video. Roumen

@iam_mad 9 месяцев назад

Hi, yes the 2 Transformer version is supposed to be good, has less humm issues in bad wired houses... 😊 The Transistors are old, NOS from the mid-80ies, one of my viewers (German Channel) did visit the Breeze factory and checked the transistors by cutting one open, they are Motorolas. Since these where 40 years in a warehouse, its impossible to know when they were scratched... ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-qi5djvbzWBI.htmlsi=JfzYVFFmHvM1T5In&t=274 I promised a swiss friend not to public the scematics (the original FM is a swiss product) but on the German "Snake Oil Audio Forum" there are people who have them.. 😉

@roumensotirov 8 месяцев назад

Thank you for the reply to my question and the informative videos you produce. Roumen

@matthewtaylor7355 4 месяца назад

The red Wima caps can be upgraded.... Jantzen Silver Z Caps will increase detail etc...

@WolfgangWimmer 2 месяца назад

Hi Matthew, may I ask if you have done this, do you know which type of jantzen Silver Caps can be used exactly? Thx

@angelolopez1384 Год назад

Excellent video... This amp is type A or type AB.

@iam_mad Год назад

Thank You. It is A/B

@kenwk2283 5 дней назад

Does this run hot? I have a small room so this will make a difference to me. Thanks

@iam_mad 3 дня назад

No, its cool, no heat at all..

@CJ-vh2hf Год назад

Great video! I’m sorry if I missed the link on the website to purchase and also what was the first jazz song that was played on the video starting @ 00:12

@iam_mad Год назад

Thank You for Your comment! ☺ This music is a royalty-free soundclip from Apple Software, it sounds nice, I also like it a lot!

@mark120371 11 месяцев назад

@@iam_mad amazing video. What seller did you buy the FM-300A from. There are few of them on Ali. Most don't have the APS volumes plot. I also seen any upgrade verison. Who do you recommend buying them from and do recommend the upgrades version. Thanks for all your help in advance.

@iam_mad 11 месяцев назад

@@mark120371 most of the followers on my german channel bought it @ YINYUN Hi-Fi Audio Store on Ali Express, although I bought mine on eBay

@mark120371 11 месяцев назад

@@iam_mad Thank you for your reply. Looking around and the units are on Amazon here in the U.S. but that unit does not use the ALPS Pontentiometer nor does it have the WIMA caps ans it doesn't like like it has ELNA caps either. Even on Ali and this is just from the photos and some quick chats I can only find two sellers units that are Using the ALPS Potentiometers, WIMA and ELNA Caps. That matches the internals of the unit you have. Not sure if they are Using the NOS transformer.

@iam_mad 9 месяцев назад

@@mark120371 Since the market did increase due to my videos there are more variants of the FM300A on the market. They differ in price, but the one for 500.- should have Elnas, Alps and NOS Transistors. I recommend to buy the luxury version and make contact first with the seller to ensure the build of the FM!

@Parke17 4 месяца назад

I can't seem to find the model with 2 transformers. Could someone link it? Thanks!

@iam_mad 4 месяца назад

de.aliexpress.com/item/1005004376482565.html

@johnsnowlow1883 5 месяцев назад

Hi, did you have any opportunity to try the FM711 mk2 clone?

@iam_mad 4 месяца назад

No, I am very happy with the sound of the FM300A, I don´t see the need for the 701- The point in the 300A is, the low feedback circuit design, that makes the sound so good. Adding circuits will mostly ruin the sound. But the nowadays speakers are all "slim bass colummn design" and have many small bass drivers with big excursion, they need these type of amplification with strong feedback circuits for control, which ruins the natural sound. I generally go for the speakers with real sound, 2 way monitor or fullrange driver. I will recieve the Dartzeel clone because of the demand, but I dont expect the big thing of it.

@johnsnowlow1883 4 месяца назад

@@iam_mad Thanks for the insights. Much appreciated. I look forward to your Dartzeel clone as always informative review.

@I.am.KubKab 9 месяцев назад

Do you have a link for Aliexpress Is there no problem when importing this to the EU regrading CE etc

@iam_mad 9 месяцев назад

I had no problem with customs here in Germany. Most buy it from YINYUN Hi-Fi Audio Store on Ali Ex. It is also called Weiliang Klon. de.aliexpress.com/item/1005004206618649.html The producer is actually Breeze Hifi Audio and they have an upgraded Version with encapsulated powerpart.

@I.am.KubKab 5 месяцев назад

@@iam_madDanke

@HouseDealsToday Год назад

Good information, Is there a Preamp clone that matches the FM300A clone?

@iam_mad Год назад

I am working on this issue, and I ordered already some pre-amps. Please give me some time! 😉

@HouseDealsToday Год назад

@@iam_mad Found this one that could be interesting as they say it matches the FM300 well. "NEW list preamp FM244 ,the whole circuit was cloned from the original one , it can be matched with amplifier FM300 perfectl"

@iam_mad Год назад

@@HouseDealsToday Thank You for this hint Ryder! There are actually the two options of the very originals, and that would be the "FM155" half sized with ext power and the "FM255" full sized preamps, that are accordingly cloned. But since I would like to go for an option with tubes I try now the Musical Paradise MP 701 MK2 and maybe also the OldChen C1 preamp. I already tried one Nobsound Tube Preamp, that sounds quite good, but thats not available anymore. The Musical Paradise looks now the most promising, because it is regarded highly and it can adapt to several impedances.

@thomothomo1078 Год назад

@@iam_mad The FM 155 preamp copies sound fantastic.I have been using one with a Dartzeel NHB108 copy and they combine really well.I have an FM 300A ordered so will report how well that combination works and how it compares to the Dartzeel copy.The Dartzeel copy seems to be a perfect match with big DC Tannoys.

@Shine-Kapuzi Год назад

Hallo Jürgen, in Englisch sind deine Videos echt noch besser, meine ich ehrlich! Mach weiter, denn es gibt echtes HiFi für kleines Geld, nicht grösser ist besser, wie allgemein über dem Teich angenommen 😁 LG Peter

@iam_mad Год назад

Danke für Deine Aufmerksamkeit Peter! Ja, ich weiß nicht, teilweise ist mein Englisch schon ein bissl "kraxert" 😂 Aber es freut mich daß es Dir gefallt! LG Jürgen 😉

@Shine-Kapuzi Год назад

Nein, im Gegenteil, bin auch Österreichischer, and i have already a lilttle Semmelbrösel in my left Leibltaschl 😅

@iam_mad Год назад

@@Shine-Kapuzi 😂 and as a kid I wos already ä big fän of Pezibär, I laiked him sou much muore then se Kasperl 😂

@mikegoddard7354 Год назад

what tube amp is that you are speaking about?

@iam_mad 11 месяцев назад

OldChen 845A

@mogenskamp2311 7 месяцев назад

how do you switch between 110 and 230 volts?

@iam_mad 7 месяцев назад

You order according to the Voltage You need. de.aliexpress.com/item/1005004202116642.htmlI strongly recommend the Gold version, it has 2 toroids instead 1 power supply

@philipketchum1407 Год назад

I could not find it on Amazon here in the USA.

@iam_mad Год назад

it is not on AMZ, sometimes on eBay You can find it. But on AliEx the "YINYUN Hi-Fi Audio Store" is where most ppl bought it in Germany. I bought mine from eBay, the seller was a HK/UK shop.

@sakeyokose 5 месяцев назад

Does this amp need a preamp? I have tried several times to eliminate the preamp, but it just sounds too boring with only a power amp. If it sounds great without the preamp this would be my best amp. I use deepl translation, so don't mind if the translation is a little bit poor

@iam_mad 5 месяцев назад

I don´t know which FM300A clone You have, but the one I have is a very precise amplifier, that amplifies the sound exactly as of what it gets delivered. If it is boring, You may check Your source, or Your clone is not the same as mine. 😊 The perfect preamp for this one is to be found with the Musical Paradise MP-701, and I made some videos about it too 😉

@sakeyokose 5 месяцев назад

@@iam_mad Thank you😀

@HotSause 2 месяца назад

How hot does this amp get, in idle as well as play mode?

@iam_mad 2 месяца назад

The transistors get ~35°C when playing good level, its an A/B Amp, it doesn´t get hot at all.

@bolobos Год назад

Great video! Can you let us know where you got this clone?

@iam_mad Год назад

YINYUN Hi-Fi Audio Store on Ali Express

@bolobos Год назад

@@iam_mad gracias!

@jm-vq4cm Год назад

Does the FM300A produce tight ans controlled bass?

@iam_mad Год назад

The Bass of the FM300A is airy and has breath, rich mids and natural voices (Jonny Cash) If You have a low efficiency speaker with a loose fat bass membrane and You look for an amp with tight dry and firm controlled Bass go for the NAIM clone, I will soon bring a video about it. de.aliexpress.com/item/1005005456044604.html

@jm-vq4cm Год назад

@@iam_mad Great information. I was looking at the Naim Nap 250 clone instead at around the same prive and more powerful. Do you think the Nap250 will do a better job?

@iam_mad Год назад

@@jm-vq4cm I can´t say that, because I did only tests this NAP 200, I didn´t go for the 250, its not so much to my personal liking. I tested it, because in Germany Naim is quite popular (more technical sound), and the viewes demanded a test. It is more the "Hifi" style sound that fits to speakers like B&M and Wilson Audio, not so natural and flavourful if You understand what I try to say 😉 in the end it is all but a question of taste and what You like. You can see the review on my german speaking channel (Iam Mad), the english version is still to be made..

@jm-vq4cm Год назад

@@iam_mad you are a kind gentleman. Thanks fit the reply. Keep it up!

@iam_mad 9 месяцев назад

@@jm-vq4cm Update: I did on my German channel the NAIM test, and it is as we thought, the sound is dry, controlled and very punchy. So for Speakers thet need control the NAIM is perfect, and You get an expensive package for little money. But to be honest, I don´t like the pronounced treble of the NAIM so much, and I prefer the more lively sound of the FM300A. But that is clear because I have more efficient speakers... 😉 Send You best regards! 😊

@alaingingras7224 9 месяцев назад

Some transistors seem corroded no? 7:44

@iam_mad 9 месяцев назад

yes, these are NOS originals from the 80ies, but there is no problem, sound is phantastic. You must understand, that the good sound comes from the old transistors, You will not get similar new ones anymore, today its all about opamp... 😔

@alaingingras7224 8 месяцев назад

One thing I noticed is that while the output transistors are at a quiescent level @33C all is well but the 2 transistors to the left front/right front get VERY hot @ 45C !With limited knowledge that I have ,I wonder 1# Up the bias voltage to 25 mv or #2- 16 mv ?m .Which of both do you think will make the temp .lower on these transistors .And then again I ask because I have to tell you...I am 66 ,never ever met someone interested in Audio so I ask the next higher up @ I am Mad !

@iam_mad 8 месяцев назад

Its my pleasure to guide You 😊 Is there really a 10°C difference between the same transistors on R and L side? In my FM there is a difference of 2°C Did You find the zero point on the speaker outlets? In my FM I found the bias of 20 mV had the best sound with my fullrange speaker Bumbel Bee. The higher You drive the bias, the more heat You get, because You go towards ClassA The bias voltage is milli volt, means 1 of a thousand, 0,001 V. Make sure You have proper contact on the right side, where the terminal is missing!

@alaingingras7224 8 месяцев назад

What I meant to say is both sides ,little red capped transistors get really hot@ 40 C.So I wonder If the bias has anything to do with this.I would try this myself but am afraid of the consequences...It was biased @18.3 mv. I will watch the video again to see up to where I can up the bias.Thank You ! @@iam_mad

@alaingingras7224 8 месяцев назад

45C SORRY...@@iam_mad

@iam_mad 8 месяцев назад

@@alaingingras7224 no, this is ok, they are not related to this procedure. The reason why they have the crowns is the heat dissipation

@alaingingras7224 8 месяцев назад

That is good to hear ! And I am ''learning'' German words ! Danke ! @@iam_mad

@Jil8840 9 месяцев назад

No sound test comparison????

@iam_mad 9 месяцев назад

there You have the sound... ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-GOlNuC32T3Y.htmlsi=HzkinQLitbyWseZ1&t=735 but I will do a sound comparison between amps later when the 3 way speakers are finished 😉

@user-dh2te2cm2d 4 месяца назад

i have this amp, sound is good, but it misses some power....too bad

@pistollero Год назад

nice channel!!!! we need more!

@iam_mad Год назад

Thank You! I work on it! 😉

@alaingingras7224 8 месяцев назад

I have a question .I have been waiting for weeks for my 300A and the vendor is LIELYE audio....The package travels all across the U.S.A. but never close to QUEBEC ... Round and round ,no notifications ...Can I ask you who your vendor was? Or not, that is O.K.They take the shipping money put half in their pocket and select the cheapest option...I dont want to bother .But this is a warning !Choose your vendor well !And how am I to know ?

@iam_mad 8 месяцев назад

Hello Alain! YINYUN Hi-Fi Audio Store is where most bought it, on eBay sometimes there are some too... I strongly recommend to choose the money back option of Ali Express! Hope I could have been of help!

@alaingingras7224 8 месяцев назад

@@iam_mad You are always of help my friend ! Your video on setting the 300A bias and zero point was very interesting ! I wonder if most of the amps in Chi-Fi land need this ajustment. P.S.The box is at last moving towards Montreal, Quebec ! Fingers crossed !

@alaingingras7224 8 месяцев назад

I got the item! Well worth the wait !I have 120 volts AC but this is 110 even as advertised as 120 ...So I guess the bias has to change ! Massive bass ! The sound is exactly how you described it .Thank You for steering me in the right direction !@@iam_mad

@iam_mad 8 месяцев назад

@@alaingingras7224 Enjoy the swiss marvel of amps! 😉

@alaingingras7224 8 месяцев назад

Thank You !@@iam_mad

@MasterofPlay7 Год назад

are you going to buy the FM 411 clone?

@iam_mad Год назад

Thanks for Your comment! I´m really happy with the FM300, so I think there is no need for the newer one, actually FM Acoustics did have a hard time to move on to a new model, because the 300 was so good, and so much requested by the customers. I don´t know how good the 411 sounds? 🤔 I saw the price of the original 68.000 CHF 😳 I will concentrate now on the pre amp (evt. with tubes) and the next speaker build! 😉

@MasterofPlay7 Год назад

@@iam_mad well i think the clone doesn't cost that much, but yea what pre amp you are thinking of getting?

@iam_mad Год назад

@@MasterofPlay7 If You have the FM411 let us know about Your expierence! Since OldChen are quite good, I consider the OldChen C1 as the more "old fashioned" tube, and the Musical Paradise MP 701 MK2 is already on the way, this is a more modern design with a lot of customable options.

@MasterofPlay7 Год назад

@@iam_mad for tube amp why didn't you get the wilsonton or cayin but oldchen?

@iam_mad Год назад

@@MasterofPlay7 because I go for the good stuff and buy everything with my private money 😉 (and OldChen has a reputation in the German high end circle) I would regard the Willsenton a more commercial product, and as You can watch on Skunkie´s channel, they need mods..

@robertozanetti7707 Год назад

It would be really nice if you let us hear him play with some beautiful female voice or some classical music.........................

@iam_mad Год назад

classical music coming up soon! 😉

@iam_mad Год назад

ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-FCgHKNn_9Bo.html 😉

@robertozanetti7707 Год назад

I prefere - 5 Mahler or Albinoni Adagio.........

@iam_mad Год назад

@@robertozanetti7707 I loved to listen Mahler in my youth, wonderful.. then I loved Shostakovich a lot~~ The FM300A is perfect for big Orchestra, just the Petit (speaker) will not deliver it. For this there will be more speaker builds later! 😉

@qddk9545 Год назад

You cannot evaluate sound via YT - you will always hear the sound of your PC connected system.

@ulrikmortensen9426 Год назад

Why tf are the heat sinks covered???

@iam_mad Год назад

The heat development is very moderate, when playing silent it keeps completely cool.

@MrRourk Год назад

Noooo you voided the warranty! Buy a ST35 before they are all gone. The people in the tube world have rediscovered this great amp.

@iam_mad Год назад

Thank You for the recommendation! ☺ I like SE tube Amps a lot for the fullrange speaker, the push-pull would give a total different sound, I will dig that, when the time comes! 😉

@MrRourk Год назад

@@iam_mad no problem. I'm building a ST120 to power my main living room.

@MrRourk Год назад

@@iam_mad Frenzel Tube Amps makes a Preamp I'm looking at for my St120 build

@iam_mad Год назад

@@MrRourk building Your own Amp is cool, thats a step further then only building the speakers! 👌👍

@MrRourk Год назад

@@iam_mad the progression is tube rolling, to amp mods, then to building.