Actually the real hero for making this V3 and ZA series amps possible and also many others such as Ayima, Topping, Smsl, etc, etc is actually good old Texas Instruments for the TPA 3255 class D amplifier chip common to all the above amplifiers, making prices as low as $80 possible with a good minimum from 100w/ch RMS stereo upwards to TI's TPA3255 upper limit of well over 250w/ch in mono channel usage. Texas Instruments actually claims 300w/ch in stereo, and upto 600w in Mono, but I fear nobody had actually recorded such ludicrous claims in independent test output. Nevertheless the sound quality achieved by companies such as Fosi using the TPA 3255 is already upsetting normal Class AB analog amplifiers costing as high as $2 - 4,000 value! So a toast to Texas Instruments and their game changing TPA 3255 Class D amp chip!

You're one of the very few reviewers who compared these directly with your main amp and is also honest about it. 👍💯

I've been using a pair of Fosi ZA3 amps for about two months. Once I got past my manly, muscley pride I realized that they weren't giving up a great deal to my usual Luxman MQ88c. Thanks for that comparison. These things are good enough that when summer temperatures can make my tube amp impractical they'll do as temporary replacements.

I really appreciate your way of describing how your ears precieve sound. Your videos are a pleasure to take in. Just as much as your music recomendations. I smiled at the showing of the big room when I saw OH MERCY on the Ever Solo. I just spun that CD yesterday.

So happy you reviewed these. Thank you.

I certainly look forward to owning a pair. Thank you so much for sharing your perspectives and making purchase choices easier.

Srboljub - you speak GREAT English, very impressive! Thank you for your detailed and informative review.. All the best, Rob in Switzerland

Excellent review. Thank you 🙌

Thanks for a great video. So far you have been the clearest on how these perform from all the KZfaq reviews I’ve seen. And if it’s 90% as good as the Topping pa7 plus which you compared to an Hegel Amp in one of your videos. It might mean we could Be getting a lot of Amp for not so much money. Thanks for helping us get access to goods quality sound for not so much money.

Fantastic review, I've already ordered a pair of these from Kickstarter, very excited about their arrival. They're replacing a vintage amp which just died on me and will cost about a million £s to repair

I had 2 V3 mono's with 2x 10A 48V power supplies on order via kickstarter but I decided to wait until the production run units come out for sale. I have 2 V3 Stereo's connected bi-amp so I can turn the bass up or down and have plenty of power. I will get the V3 mono's no matter what eventually, I just don't feel the rush. Your video just confirmed it for me. Great little amplifier the V3 mono will be no doubt, and I will surely enjoy it once I own a pair but I don't see the rush. The V3 stereo's are basically cranked to max volume, my RME ADI2 Dac fs does pre-amp duties. I also bought the p3 tube preamp to play with, shame they used a not so common place tube and the op-amps are not removable without risking damage to the caps located right near by. I just wanted to play with some tubes on the pre-amp. I have a full tube amplifier, actually 2 of them but it's hot in Tokyo and running AC to listen to music just doesn't make sense to me. My tube amps are both safely put away. I love your reviews as I find them the most relatable to how I listen to music, what I think about value. Other youtubers are not so honest with their opinions. Thanks as always!

Great reviews! Very well articulated, just like the music! 👍 One term/criteria I'd like to hear more is: how's the "musicality" of the amps you review! Thanks and keep it going! 🤘

Another excellent review, thanks. I have a pair on order and am old so I no longer worry about manly muscular pride. For the cost difference I will put up with slightly smothered sound keeping my CPAP machine near by ;)

Great review Srbo, thank you! I like what I'm seeing and hearing about these small Fosi/Ayima/etc amps, and I am really tempted to buy a pair of V3s, of course. I just have a tiny dilemma about the word "small": when you see the size of powerbricks they're coming with, you'd have to rethink "small". Anyway, this is just another audiophile puzzle to solve, I suppose.

Nice review, thanks. I have a pair coming in a week or so. In the meantime, I use a ZA3 with a Trigon Snow White II preamp with Focal Aria 936 and the sound is really very good. My Trigon Energy is out for repair so looking forward to comaring the Energy dual monoblock with these 2.

Great opening! ;)

Srboljub, I've been going through reviews and I've noticed that you haven't reviewed Fiio K9 AKM. Man, there should be a review from you on this dac/amp. Haha! I specifically would love if you could compare it to SMSL DO400, since how pleased you were with it due to balanced quality of both its dac and amp; in fact, you put it above Topping DX5. Another interesting point for the comparison is that both SMSL DO400 and Fiio K9 AKM have the same price point. Thanks for the great reviews, as usual.

I only trust your fabulous and erudite reviews !!!!!!

Thanks! Judging by the measurements on the ASR, these are very impressive "babies"! The only thing is, I would use them in bi-amping for the lower frequency band (up to 1 kHz).

Would be fantastic if you did an opamp test for these, like you did for a DAC. Pozdrav

Ahhhhhhhhhhhh! My audio vampire! Love your accent!

Great review, what is the primary and secondary system exactly? Also, would have been cool to a see comparison to one of the Infineon MA53332MS powered SMSL amps.

Great Thank you Man

Can't wait for the Opamps upgrade review.

Your review has convinced to pay attention to these amps. What do you think about the idea of replacing 2 x Schiit Freya mono (XLR) with 4 x V3 mono (5A power supply) (via XLR Y split) - the Freya(s) struggle to drive my Tannoy XT8F over 80dB, otherwise I'm very happy with them. Where can i find the review of your class D amps mentioned in this review?

Yet another brilliant review, Srboljub. A question for you. Did you experience any high heat issues during use, as it has been noted in other reviews of the V3 Mono amps, that they run very hot. That would be a concern for me about long term reliability.

Which op amp(s) do you advise to add a little warmth/smoothness, improved soundstage, little bit more emphasis on reverb to the sound without losing clarity/fidelity/details?

Great intro 😂

Using 2 48v 10a power supplies would probably make them even more dynamic for the lower frequencies. Changing out the Op=amps depending in you source and pre-ampification adds an extra step of flexibility for tweaking your sound. The only thing I worry about is longevity.

A switcher would definitely help out in an AB comparison. Are you using one?

With right implementation and design, the TI TPA 3255 as well as the STA 516BE can be made to sound pretty sweet with lots of bang for the buck.

Seems like a better amp than their previous - one disappointment is the small binding posts. Banana plugs are probably required?

Hello, can You recommend me a DAC to "balance" my warm amp? Lets say i want to get a little bit more detail of my amp, but dont want to lose musicality. Thanks 😊

Can you test the AiyimaA70? There are very few videos and I haven't made up my mind to place an order yet.

Tell us about the new Gan Fet amps

So, I've had my eye on the Topping LA-90D as a possible end-game amp but now, of course, these guys are on the scene. I would love to know if someone has been able to listen to both solutions.

Fosi Audio notified the Kickstarter participants that Fosi will provide a noise filter for free to those who bought the 48volt 10amp power supply. They also a a bonus will give two OP amps for free when the amps ship around June 15th. I ordered two V3 Mono Blocks and power supply as a reward for pledging their fundraiser.

Two girls in serial, okay. Two girls in parallel = trouble.

:0-:24,love it, Excellent vid

What dac would sound good with these mono amps?

These work great / cool for the summer.

can you please talk about equalizer i know that equalizer is a bad word in most audiophiles ears. but if one need/must use a equalizer how would one do it best in terms of sound quality? from a app ? from a real equalizer ? (produkt link?) i want to make a u-shape respons in my setup. thanks

Wiim Ultra into a quality tube buffer into a pair of these should be pretty schweet.

0:44 ♥

Hi, love your reviews. Are you comparing V3 Monos to ZA3 as monos or as a stereo amp?

I'm looking for a good preamp for this setup. Tubes, maybe but not necessarily. My ''A'' list choices are cost prohibitive but I am willing to spend 5-10X the price of the amps. Schiit Freya comes to mind but something tells me I could do better for under or around 2K.

should I trade my SMSL A300 for more heat?

Hi,your choice from 1-3 Musician Draco,Denafrips 12th and Toping D90III or you have something else requested in the range of 700-1000 EUR? Thanks(Hvala🙂)

If you chuck in some Burson V7 vivid would it outperform much more expensive amps?

Srboljub, do you still have your LS50 to test V3 on them? I've had 3 cheap small class D amps in the past and I wonder if this is another overhyped product with thin midrange and lack of energy.

Have a like for the first statement

Did somebody compare it with Aiyima's A07 Max used in monoblocks? I bet it sounds the same. Price is just the half and only 1 opamp to change in each unit vs 2 to 3 inside de Fosi's

Power consumption in stand by mode remains 10w for each unit.

I'm guessing the op amps are socketed and swapable. Why do established companies use Kickstarter?

Asking for a friend, how does one connect two 12V trigger cables (from two V3 Monos, to my Wiim PP, that only has one 12V input/output? Is there an adapter or how do I connect both?

ya want to hear how well these are then hook up a good set of headphones to them..... plenty of headroom...

Thanks. I have a ZA3 and plan on getting two V3s to replace it once they are off kickstarter. I have a Geshelli J2s AMK 4499 DAC, the Topping A70Pro, and some Emotive XB2s. It's my near flied desktop setup, so I really don't need a speaker amp with volume control. The A70Pro works just fine as the volume part, I just hope the V3s don't pop when I switch the A70Pro from headphone to pre like the ZA3 does if it's turned up. Also, I hope the V3s don't have the hiss that comes through the tweeter like the ZA3 does when nothing is playing.

So you could biamp or even tri amp with these…

Auto switch on a power amp? always turn on last and turn off first. Good that it has this option anyway.

Could purchase 4 and biamp your speakers if they allow that.

How do hook up a sub?

Sorry I have to disagree with the Fosi P3 preamp being a 'bottleneck'. I have one driving two ZA3s and it couldn't be more transparent! That's with ATC SCM11 speakers!

Amazingly good, compact and inexpensive gear!….but no music this time 👉🏼😢

Two girls! :D (consider this a sub)

Better than $2,000.00 Class AB power amp ? C'mon man, it is far away when you talk about the bass slam and resolution..😊😊😊

Fosi should have skip the ZA3 stereo and saved me some pain. I have a V3 and a pair of ZA3 doing monoblock duties. The other channels are thus not doing anything except adding weight and space. I am not adding more $$ to the sillyness of this naked grab by Fosi

But…all ‘dem cables esp XLR cannot be clamped practically

There is no such amp for sale on AMAZON or anywhere else for that matter. So only you have them. That is not helping me one bit. My point is why are you telling me about something I can't buy?

Low fi

THANK GOD WE HAVE CHINA!!!! To get this kind of audio performance from traditional "audiophile brands" you had to sell your car. Way to go!! Hi-fi for the PEOPLE as it ever was.

2 girls are better than one, lol

0:00 _"... two is always better than one ..."_ Yeah. You say that like if it was universal. But it's not. Two cakes can be better, or not. Stereo can be better than mono and it can be not. And many have real troubles with only one girl already, what will not be solved by multiplying it by 2. For example I just bought an active nearfield monitor (yes, very fkg stereo) and I got them with a reason, but I just began to think about what if one of them will be broken will I throw out the other too, or will I be able to get another one with the same state of the wearing down like the remaining one ? Why is that good, if we multiply electronic blocks per channel, what could be working as a common part ? Yes, can be reasons, but those reasons are not the "two is always better than one". 'Cause it's not. Not always. Not even usually. Only a can be.

Two girls one cup is not better, unless you're German

One power supply two amps is not good idea