Fosi Audio V3 Mono review
ฝัง
- เผยแพร่เมื่อ 25 พ.ค. 2024
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00:00 Two is better
00:25 About V3 mono
04:30 Sound
07:17 vs V3 stereo and ZA3
10:35 vs Topping PA7 plus
12:32 Unreasonable setup
14:03 Final thoughts
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0:00 Intro
Room test system:
Eversolo DMP-A8, Allo DigiOne Signature
Lampucera DIY DAC, Gustard R26 DAC: bit.ly/3XLyNCF
Acoustic Invader AMP and PREAMP (Fulcrum version): acousticinvader.com/
Spirit Wind Speakers: • High End 2-way speaker...
Head-Fi:
Aune S17 Pro: amzn.to/3u2O6gu
xDuoo XD05 Pro: shorturl.at/stJRT
Verum 1: www.verum-audio.com/store
Goldplanar GL2000: s.click.aliexpress.com/e/_DkW...
AKG K702: amzn.to/3TSlnUF
#hifi #audiophile #amplifier - วิทยาศาสตร์และเทคโนโลยี
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!
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.
Had this same experience when I found out a $200 SMSL amp was basically doing everything my Accuphase could do, minus a bit of smoothness and refinement. Not sure if those qualities will be worth the extra thousands they cost in the future if the budget space continues to explode like it is.
You're one of the very few reviewers who compared these directly with your main amp and is also honest about it. 👍💯
Srboljub - you speak GREAT English, very impressive! Thank you for your detailed and informative review.. All the best, Rob in Switzerland
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!
Tokyo eh? How big (small) is your room and what speakers are you using?
I lived in Japan for 30 yrs. I know all about houses and apartments.
I certainly look forward to owning a pair. Thank you so much for sharing your perspectives and making purchase choices easier.
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 ;)
So happy you reviewed these. Thank you.
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
Thanks for a great video. So far you have been the clearest on how these perform from all the TH-cam 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.
Excellent review. Thank you 🙌
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! 🤘
I only trust your fabulous and erudite reviews !!!!!!
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.
Great opening! ;)
Can't wait for the Opamps upgrade review.
Someone should do an extensive opamp test. There are three opamps in there. I'd like to know exactly with each one of them does.
@@D1N02 the TH-camr VirtualHiFi uploaded a video four days ago titled 10 OpAmps tested with HQ sound demo - Op-Amp Rolling - Find the hidden gem !
@@D1N02 If they are anything like the ZA3 you will probably have 2 for the inputs and one for the single channel. At this level, you'll only need to change one in each amp.
@@D1N02 One of them is used on the RCA input to make it balanced. That much I do know.
@@leetaylor13 make an rca input balanced????? There is a gain switch. That's what it is likely for. I want to know what the two other ones or for. Especially if I can mix match op amps.
These work great / cool for the summer.
Ahhhhhhhhhhhh! My audio vampire! Love your accent!
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.
Great intro 😂
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).
Great Thank you Man
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.
Would be fantastic if you did an opamp test for these, like you did for a DAC. Pozdrav
Two girls in serial, okay. Two girls in parallel = trouble.
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?
Wiim Ultra into a quality tube buffer into a pair of these should be pretty schweet.
What are you thinking? So far I am planning to use the smsl D6s for volume control and Dac/streamer. Do you think I should get a preamp too?
@@CanuckQuest .
Any device with a "variable line level analog output" is a preamp. If the smsl has a volume knob and rca outs then it's already a preamp.
@@CanuckQuest .
There are passive preamps that are 1 line in, volume and 1 line out. That's all. They're not even plugged in. They use no power. And they can cost a very pretty penny.
@@TriAmpHiFi Watch out for impedance matching of the output of a passive pre with the input of the V3 monos. I seem to remember the V3 mono has a pretty low input impedance.
I have a pretty ancient Creek OBH10 passive pre, old enough for the manual to warn against using it near a CB radio. It has a remote controlled motor to turn the potentiometer. It is remarkably transparent as there are so few components in there. It's also tiny.
@@leetaylor13 .
Thank-you Lee. I'm weak on the specifics in the Impedance matching arena so back to the books for me. I appreciate your relevant advice. Thanks again!
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.
They do run hot because they seem to use the chasy itself as a heatsink. That said, I was able to touch them and keep my hand without feeling they would burn me (which happens around 50C for people touching metal). That's not a problem for the TI chip, nor for the opamps. Only electrolytic capacitors' life span is shortened by the heat, but if they're chosen well (high temperature rating, high quality) they should last for years before wearing. I haven't open them yet to check that.
I have a few spare Noctua PC fans that I intend to run off 5V USB to fan adapters to add airflow and cooling to the amp case with the V3 monos. Keeping the fan speed down keeps them silent in operation and sips barely any added power consumption.
Seems like a better amp than their previous - one disappointment is the small binding posts. Banana plugs are probably required?
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.
:0-:24,love it, Excellent vid
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.
Agree on that, they are smaller and do get hot. Looking at the specs of the TPA chip, 48V is stretching it.. That said, I run 2 ZA3's in mono @ 48V and it never gets hot, but of course they are somewhat larger.
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.
The differences in distortion of higher frequencies between LA90 D and this one are EXTREME. You are not getting remotely tge same SQ.
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?
A switcher would definitely help out in an AB comparison. Are you using one?
0:44 ♥
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 😊
Tell us about the new Gan Fet amps
I'm guessing the op amps are socketed and swapable. Why do established companies use Kickstarter?
Hi, love your reviews. Are you comparing V3 Monos to ZA3 as monos or as a stereo amp?
As stereo. I only have one ZA3.
@@iiWiReviews👍 Ive heard stereo amps will suffer a little in staging due to crosstalk compared to a mono, as im sure you know. Id imagine getting the volume control would clean it up a bit.
Either way these little amps seem the ideal place to save money, allowing for better speakers and sources.
You may be aware of the virtual highfi youtube channel by one of the designers of Qualio IQ speakers (i know hes involved anyway) He has very high fidelity recordings of those speakers with different accompanying gear. Hes a big believer in Fossi ZA3 and regularly pairs it with May KTE and T&A 200 Dacs with 7000 euro, highly transparent Qualio IQ speakers.
th-cam.com/video/Fy-cVOJNWRY/w-d-xo.htmlsi=vzSA4cRTTwcVN7uU
I experienced a whole new level of listening using 2 ZA3 as monoblocks rolling MUSES02 op amp and balanced connection to Holo Audio Cyan 2 DAC and listening on ATC SCM19 bookshelf speakers. My masculine pride was not harmed by any ounce! 🤣
In stereo mode, the ZA3 sounded closed in and with stock op amps, they are probably not the best sounding. So, factoring op amp upgrades, the price will reach that of the Topping PA7+ but perhaps the it could rival the sound quality and in terms of flexibility in op amp rolling.
May I also suggest that since 2 is indeed better than 1, try listening again to the V3s & ZA3s in mono configuration with some op amp rolling and perhaps we will have our socks blown again! 😁
@@iiWiReviews 👍 Ive heard stereo amps will suffer a little in staging due to crosstalk compared to a mono, as im sure you know. Id imagine getting the volume control would clean it up a bit.
Either way these little amps seem the ideal place to pinch pennies, allowing for better speakers and sources.
You may be aware of the virtual highfi youtube channel by one of the designers of Qualio IQ speakers (i know hes involved anyway) He has very high fidelity recordings of those speakers with different accompanying gear. Hes a big believer in Fossi ZA3 (with upgraded Opamps) and regularly pairs it with May KTE and T&A 200 Dacs with 7000 euro, highly transparent Qualio IQ speakers.
th-cam.com/video/Fy-cVOJNWRY/w-d-xo.htmlsi=vzSA4cRTTwcVN7uU
@@RyanChoo Very Intersting...Cyan 2 into upgrade Fossi monos seems to be really pushing the envelope in high value Sound Quality! One thing that could make the value even higher is if the Cyan 2 behaves in the same way as May in regards to DSD.
In the VirtualHifi video i linked with Fossi and May Dac, he mentions in the comment section something very intersting. He found that feeding his May DAC HQPlayer DSD256 from his Macbook Pro sounded better than feeding it HQplayer PCM705 from the 6k Aurilic G2.2 server. (Which is Aurilics highest sample rate) . Using macbook at 705pcm, Aurilic was better ,but once going to DSD, the May Dac (and T&A 200) both use a different DAC circuit for dsd.
It makes me think the Cyan 2 might be a similar situation. Of course the Holo Red outputting DSD would be even better than a mabook. But still, its amazing that a Macbook can sound better than a 6k server when the server is limited to (highbit) PCM. It could really add to the already high value.
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.
Get the musical paradise, yih can upgrade tubes and capacitors to make it sound liquidly smooth
@@a4rontran Seems like a bargain at the price. Form factor (height) would be an issue for me and one reviewer mentioned a significant amount of background noise.
@@mikecees2230 he revised to mk3 already. So far, I don't hear anything hissing
Can you test the AiyimaA70? There are very few videos and I haven't made up my mind to place an order yet.
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
ya want to hear how well these are then hook up a good set of headphones to them..... plenty of headroom...
Have a like for the first statement
Power consumption in stand by mode remains 10w for each unit.
So was that 20 watts with a shared 48V/10A power supply or did you measure that with separate bricks? What's it pulling in idle? I've noticed my ZA3 doesn't really consume much more in action vs in idle but I'd expect standby to actually reduce the draw considerably. That's really disappointing.
@@lisar3944 yes no matter the power supply it's 10w in stand by par unit, 20-23w in use.
@@lisar3944 it's always a way less than class A and class A/B amplifiers
Could purchase 4 and biamp your speakers if they allow that.
That could actually be a really neat possibility. My two way speakers are set up for that and my tube preamp has three pairs of preamp outputs.
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
I prefer the ayima 07 max mono over the fosi za3 mono due to larger sound stage and more neutral sounding.
Which opamp did u switch? The one closer to the speaker terminal or the one closer to the volume knob on the aiyima 07max?
@@a4rontran On the 07 Max used in mono the one closer to the speakers conectors, the left channel, you can take the other one out. I use the Aiyimas without the case with Akliam LC5 connected with dip8 extenders, for me it sounds very good, wide soundstage, non fatiguant, no harshness ans sibiliance in the voices compared with stock opamps and they are cheap. Now i would like to test the Burson V7 classics to compare.
@@tofffsymagic1099 I paired them tube preamp. I really love it.
What dac would sound good with these mono amps?
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🙂)
Hi. I do prefer D90 III to Draco just slightly and that would be a great choice without a doubt. But my favorite bellow 1000 is still SMSL SU-10 for its big and lush sound signature: bit.ly/3iN87C3
I did a video on it too: th-cam.com/video/jVG7geoiHxk/w-d-xo.html
I can't say anything about the Denafrips Ares 12th since I haven't tested it. The last one I tried was Ares II and I can say that SU-10 is comfortably better to my ears - more details, more dynamics, yet still very soft and analog sounding and with a big soundstage.
@@iiWiReviews Hvala ti puno,preplaćen sam i rado te pratim redovno.Živio
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.
You should buy a proper amplifier like the Audiolab 9000A 😊
@@Gadgetdad007 I don't think I need a $2,700 amp for a system that only costs $1,550. Thanks for the suggestion, but I need something small to fit on my desk with the rest of this stuff.
I have two ZA3s in mono mode and they don't hiss at all.....
@@steven2809 my single za3 in stereo mode is silent as well.
should I trade my SMSL A300 for more heat?
Two girls! :D
(consider this a sub)
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.
Yes I still have them. Didn't try that combination but original LS50 (non Meta) are very midrange-centric. So with these amps we would need to bring some bassline boldness either trough the preamp or source... Or by adding a sub, which is what I did in my last phase of using them.
What class D amps have you tried with them so far and what is the rest of the system?
@@iiWiReviews I had SMSL A300 (quite bad), Sabaj A30a (allegedly SMSL VMV A2 in a different case) which was better, but had very distant midrange even on LS50 Meta, then I tried Topping MX3s which wasn't bad, but a bit underpowered and it sounded thin compared to my Hegel H200, Hegel is not suitable for my desk tho so I'm looking for something smaller. Btw. Lyngdorf TDAI-2170 sounds perfectly fine, no complaints like with the cheaper class D amps. Do you think Fosi V3 Mono is in any way step up from many other cheap amps you had tested?
I drive my pair of LS50 Metas with a pair of ZA3s right now in a pretty decent size room and it plays quite loud without any distortion. I ordered a pair of the V3 Monos to eliminate the load-dependent response issue of the ZA3s (which really only comes into play at frequencies over 13Khz anyway). All that said, if you want proper, full sound from LS50 Meta, it doesn’t matter what amplifier you drive them with-you need to pair them with a good subwoofer. I run an SVS SB-3000 with my LS50 Metas, with a Schiit Freya+ feeding everything. DDC and DAC are Gustard U18 to Musician Draco via I2S. The sound is absolutely sublime set up this way.
If you chuck in some Burson V7 vivid would it outperform much more expensive amps?
Those amps are very clean and clear sounding, maybe the V7 classics would be a better choice?
I would invest more money in dac and preamp, then for sure u wi have a fine system
Might not fit. I had to cut holes in my V3 stereo to fit the Burson V6 vivids.
Auto switch on a power amp? always turn on last and turn off first. Good that it has this option anyway.
Power consumption is 10w for each unit in stand by mode
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!
High performance stereo pre amps are really difficult to design... The Fosi P3 is certainly excellent value, however it is also certainly a very real limiting factor to your ZA3s reaching their upper limit of performance... This reviewer mentions the Schiit Audio flagship Freya preamp, but their 2nd tier model, Kara at $399 would make excellent upgrade over the Fosi P3 without taking prices too far.
I think Fosi has taken the Texas Instruments TPA3255 based class D amp technology as far as they physically can, but has yet to learn to design a good old fashion analog preamp circuit anywhere as good as their achievements on the ZA3, and this new V3 Mono.
@@kevintan2221 Thanks for your comment. Unfortunately the Kara is not $399.... it's £765 in the UK... plus I don't need a headphone amp which is built in. I would consider the Schiit Saga S but you can't get them in the UK! Always out of stock. That's the problem with Schiit products outside of the US....😖
Aune s9c pro into these on paper would be exceptional..
Unless I'm mistaken about the ZA3s in mono mode, even if you have the ZA3s at full volume, this only bypasses the volume controls, but not the ZA3's NE5532 preamp chips. So, I suspect you would get even better transparency if you weren't running the ZA3 preamps through an additional preamp, the Fosi P3. Just my 2 cents worth.
So you could biamp or even tri amp with these…
Amazingly good, compact and inexpensive gear!….but no music this time 👉🏼😢
Hm, I belive there are two songs in the video. Maybe you missed them while skipping.
@@iiWiReviewsthanks!…I'll go back…I watched the whole vid…but…my bad! 😅
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
Because you are obliged to immediate buy anything Fosi comes out with?
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..😊😊😊
Sure, you can just invent a part that doesn't exist and complain about it. 🙂But I am getting old and forgetting things, so please refer me to the part of the video where I mentioned any $2000 class AB amp and said anything about these being better than it.
How do hook up a sub?
Through a preamp
That's the advantage of two ZA3 s instead.....sub outputs!
Tried all diff ways with many combos, settled on speaker BP's to HL inputs on dual subs
@@tothemax324 That's how I used to connect my subs...unfortunately you cannot do that with class D amps as the negative amp terminal is not grounded.
@@steven2809 You are correct to a point, some like Hypex ncore (i once owned) are grounded at neg output. Or contact fosi
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?
Kickstarter campaign was ongoing when this review was uploaded. It's finished now but amps will come to Amazon and other stores once preorders are fulfilled.
Low fi
But…all ‘dem cables esp XLR cannot be clamped practically
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.
I think you are over thinking it.....😂
2 girls are better than one, lol
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.
Yes People’s Republic of China 🇨🇳…an enemy of my country 🤷🏻
Well said. China’s manufacturing is going God’s work
@@ColocasiaCorm child labor…poor working conditions…we must believe in different God’s
@@seanb3303 how does it feel to be the only one who likes your comment
@@seanb3303 Shut it
Two girls one cup is not better, unless you're German
I never mentioned any cup. That course of toughts is yours to claim and ponder why would your brain lead you there. 😁
@@iiWiReviews 🤣🤣
Think Philippines
One power supply two amps is not good idea
Kind of true, but you can order them with dual PSUs too.