Eversolo AMP-F2 vs Fosi ZA3 - I'm going to keep this Class D amp ...

[@VirtualHiFi]

Please LIKE and SUBSCRIBE 😄👍 For stunning revolutionary 3-way speakers visit - www.qualioaudio.com Looking for the best fullrage drivers - Cube is the answer - www.cubeaudio.eu Need to get the Fosi ZA3 Amp - fosiaudioshop.com/virtualhifi (affiliate link, no additional cost to you and I get a small commission that will help grow the channel)

[@WarriorProphet]

Have you gotten the new 48v 10a powersupply? Fosi has on website now.

[@oliverosrecki7421]

Good day! What do you think about Fossi devices? Another thing I wanted to ask you. Is it true that Fossi devices can match the PP quality of devices that cost $1000 and up? For example to compete with devices such as McIntosh, QUAD, Pioneer?

[@RyanChoo]

I drive my ATC SCM19 speakers with 2 Fosi Audio ZA3 as monoblocks with upgraded op amps (MUSES02) and enjoying music on a brand new level!

[@VirtualHiFi]

Thanks for sharing and congrats on your amazing sounding system :)

[@misterl7771]

Did you only change the op amps for the one channel in mono mode, or did you change all op amps in this Fosi amp? Thank`s for answer.

[@RyanChoo]

@@misterl7771 As I am using XLR, I only need to change 1 op amp per monoblock. All other op amps were removed. Leave two in if you are running sub-out. Cost savings too!

[@RyanChoo]

@@misterl7771 Recently, after reading some posts on the Fosi Audio forum, some suggested to put in an op amp in the right channel as well. That did not yield good results for me. While the power output seems to increase (without turning the knob all the way clockwise), my Subwoofer output was suffering. No matter how I crank the volume higher on my active sub, the bass signal seems weak and unable to produce the degree of bass when I only had one op amp in the XLR DIP8 socket. Therefore, I revert to running the monos with only 1 op amp in the XLR socket. That's it!

[@HiFiMods]

@@RyanChooTry to upgrade to Sparkos SS3602’s, their Pro or Burson V7 opamps. Muses02 is just another version of 5532 IC (integrated circuit) opamp chips, they don’t have capacitors in them. Discrete component opamps do, hence an improvement in sound. It will cost a price of another ZA3 for your application.. 😉 But in my experience the whole audio system goes through a transformation, my initial reaction was - did my speakers just quadruple in size? Not over-exaggerating either ... 😅🤷‍♂️ Good luck!

[@flashhog01]

Great video. They were close but as you stated, the midrange on the Fosi was better. Another win for the Fosi.

[@oliverosrecki7421]

Good day! What do you think about Fossi devices? Another thing I wanted to ask you. Is it true that Fossi devices can match the PP quality of devices that cost $1000 and up? For example to compete with devices such as McIntosh, QUAD, Pioneer?

[@davidbirkhead1176]

I tried the dual Fosi v48’s in mono mode and for high impedance speakers they just can’t hack it, my F2 drives them and provides an amazing sound I like bass and a crisp high so possibly that is my bias but what wasn’t debatable is the Fosi can’t power difficult speakers like the F2 can. I have revival Audio Atlante 3’s and the Fosi could not drive the cone enough to give any bass

[@drsuresh9]

I am going nuts hearing these little puppies Roar like LIONS and scaring away all the big Giants in audiophile industry. Got Aiyiama 07 max couple of days back. Hooked up to TAGA 606 SE front floor stands lying idle and shocked to hear crisp,clean and huge sound. Could not believe my ears. Gonna buy Fosi ZA3 soon and try on my Lintons. Thank you for all your time and efforts ❤❤❤

[@funcionyforma]

How does the 07 max sound with lintons?

[@klepp19]

I use Fosi for summer time when too hot for my 300b!😊

[@kjellhedberg1199]

Im trying out the EverSolo F2. Its been running for about 240h. Using a state of the art dac and preamp. I hear everything in the mix and very good dynamics for the money. Only thing is the sound stage is not that huge. Bang for the Money!

[@ShroomFreak]

Fosi ZA3 all the way !

[@jackczerniawski4972]

Dziękuję za wszystko Co Pan robi. Muzyka to moja pasja. Nie stać mnie na drogi sprzęt. Pokazał mi Pan nowa jakość dźwięku. To naprawdę robi różnicę. Pozdrawiam serdecznie.

[@barturbanek9117]

Hi! Is he from Poland?

[@jackczerniawski4972]

@barturbanek9117 yes

[@patos6619]

I had the Eversolo AMP-F2, found it unengaging. Sold it after a couple of months, and don't regret it.

[@civilcitizen3586]

Hey Greg! I love you A/B test. Switching quickly between devices is the better way for me to hear the comparisons, I try to stay with the same tones and notes to hear the differences... Perhaps I just can't hear what you hear in your room, but you and me are often out of sink on the choices you audition; I don't have headphones that's got to be a big factor.... I DO love your music selection. You provide a balanced cross-genre array of songs; I have watched many of your videos several time to just hear the songs you play; my system is down now so I'm using you lol. As for this video, I was wanting the EverSolo to prevail being that it's pretty and cost a bunch more, but I think you and me may finally have concurred on this test. I actually couldn't hear the difference between the Ever. and the Fosi's I have two of the Fosi's going into my new setup.... amongst the great sound they produce for the price, I am taking advantage of their ability to dip into 2 Ohms. I have a hybrid DIY speaker set that's dipping to 3.4 Ohms, so I need the extra insurance. KZbinr: Williston Audio Labs tested the Fosi's @ 2 Ohms and they held strong without a flinch. Hey, I'm still hoping for some dimension and build info on you little test 4" speakers, I'm want to play around with those 4" full-range units you tested a while back, I need a decent functional box like you used... I grabbed the Visaton B100's. Also, would you list out the artist on you music if you can, I'd like to grab them off the internet or marketplace? Thanks Greg!

[@jpn3971]

Hello, I really like your videos and your excellent sound recording work and I think you would be better heard if you also shared, with a link in your comments, your audio files on a sharing site where we could download them to listen directly without the bad filters of youtube! A short silence, for example, separating the 2 amps to allow us to identify each other, but we can also identify the youtube timecode and note it down to know when it's one amp or the other. Indeed, when I listened to sound samples from your tests between the DMP-A6 and DMP-A6 Master Edition, I clearly heard a difference in volume in favor of the ME, and for those who listen, a small difference of 0.2 DB makes the loudest listening always better! after several steps, I recovered your sounds in my studio one software, and curiously enough, I no longer found any difference in sound, so I was able to listen freely. But this remains with compression and other youtube optimizations nonetheless. what do you think?

[@sean_heisler]

The eversolo has got a somewhat low input impedance at 11k ohms. Beware if you have a tube preamp with higher output impedance, you may run into a lack of bass. The Fosi wins it for me here though, easily. More dense, airier, longer decay, mids have body, great bass.

[@matytinman]

Easy test: Fosi ZA3 in dual mono with Sparkos is the winner. Your Qualio speakers facilitate tests.. and my KEF Q100 modified too 😀

[@oliivioljy9700]

Fosi Za 3 sounds better because the tones are more present and the sound structure lives and breathes better in the music. Eversolo Amp f2 sounds vaguer and does not separate the tones from each other, but rather packs them into the same package and the sound is more one-dimensional. Both sound quite similar, but the musical pleasure comes more from the fosi Za3

[@34332]

​@@oliivioljy9700 Exactly this 👌

[@c0mbat15]

Do the Sparkos actually make much of a difference? They cost the same as the amp itself so it seems stupid.

[@wegardfjeld3789]

A power Amp vs a hybrid with own volume controls without a quality pre. How could this test go wrong 😱😂

[@AdiMaco]

Yeah, I liked the Fosi more. The Fosi had a bigger soundstage, and the image of the instruments was bigger, but Eversolo has been a bit, just a bit smoother. But overall, in your setup and in my headphone setup, which is entry-level (AKG K273Pro and an iFi Zen DAC V2), Fosi sounded better overall.

[@MrRonnmaui]

I am 70 so not sure my hearing is any where near 100% but the mid vocals are very engaging on the Fosi ZA3.

[@gottrekk5798]

Hard to say, I like both.

[@VirtualHiFi]

Thanks for your vote :)

[@D1N02]

I think the problem is the passive pre amp. I am not a fan of those. I am thinking about the Hypex Nilai diy kit mono-blocks. Also available as stereo amp kit. Fosi is soon coming out with a true mono-block as well The V3 mono.

[@net_news]

yeap, I thought the same, passive preamps could mess with the impedance of the power amp.

[@wegardfjeld3789]

A pure power Amp vs a hybrid without a proper pre section pairing.. The obvious issue is easy to see without a proper pre. Please do this again. The F2 might have its limitations, but nah. This isn't how you do this.. Just check the P3 review someone else did and have a laugh. The amps tested there sounded the same he said. Yeah uuuhm, using a pre that hit it's ceiling before the better amp was barely used isn't how you do this. Sorry.. Next time doing tests like this you use equipment beyond the amps quality so there is no chance they influence the results. Love the speakers tho

[@AdiMaco]

There is a problem with passive preamplifiers, they usually have the same input and output impedance and this is the impedance of the device, the potentiometer. This gives us a very high output impedance that can not accommodate the high impedance of the power amplifier. Usually, this impedance is 10 Kohm to 50 Kohm which is very high (unless the designer uses output transformers to lower the output impedance). These Fosi ZA3 are indeed very good!

[@masterblaster3724]

Tpa3255, and forget anything....is another level of sound, and the sparkos make the difference to complete this set🎉

[@VirtualHiFi]

Yes its a way for the 600$ amp that you can build amazing system around an d neve think about amplifier ever again.

[@contragica8609]

Eversolo is more balanced, the bass keeps its conformation and does not stand out too much. Conclusion: Eversolo winner

[@VirtualHiFi]

Thanks for sharing your feedback and opinion.

[@garyalexander5686]

Great music choices. Thanks for this.

[@buckaroobonsi555]

They both sound really good but I like the Fosi ZA3. They are different but I do not think one is better than the other just different. It is amazing that for the price the Fosi ZA3 is so good. The mid range is better on the Fosi. The difference in bass did not come through on KZbin in terms of the difference. Your mic setup and recording was amazing and so is your system it sounded fantastic! I could not tell much difference in seperation between them the highs sounded just a little more clear on the Eversolo but not enough to make it worth the extra money.

[@VirtualHiFi]

Thank you for your comment and indeed I also like the Fosi more. Definitely way more interesting midrange and liveliness ;)

[@GT-Diaries]

Great channel, impressive sound even through KZbin.

[@VirtualHiFi]

Thank you very much! Glad you enjoy the videos 😊

[@davidflack1466]

The eversolo is also possible to run as a monoblock with moore power etc. Think two f2 whould be moore fair since the fosi runs mono.

[@VirtualHiFi]

Yes. It would be great to test two, but I only had one. Also price wise one F2 is twice the price of two za3 with opamps moded so .... ;)

[@alexanderbeneke51]

I must admit that for my main system I'm still running a tube amp (actually 2x 211 monos) but for my desktop setuop I'm getting more and more interested in some class D amps. Currently I have an emotive which is not doing justice to my LS6, and want to upgrade from it. BTW if you have a chance listen to the Moon 641 amp, one if the best amps I've heard. Keep up the channel, I really like your videos!

[@VirtualHiFi]

Thanks for your comment. I like the 211 for the sound and the glow ;) Great Tubes. I'll try to put my hands on the Moon I heard good things about it so thank you for reminding me about it ;)

[@alexanderbeneke51]

@@VirtualHiFi, have you tested the Cambridge Audio EVO 75 and/or 150? I was wondering how close the Fosi is to these in terms of pure amplification. Although I'm tempted by the all in one for desktop applications...

[@terrakorp4291]

Thanks much... I can hear difference now....

[@VirtualHiFi]

Good to hear! 😊

[@wyup]

What do you use for volume control and levelling, ZA3 own potentiometers? Some say ZA3 has channel imbalance from low volumes.

[@elfton]

Thanks for a great test. Is it also possible to replace the opamps with better ones in the Eversolo F2 please? The difference will probably be in them

[@festerfeet7302]

So pleased you are trying this, I am looking at ordering the IQs and am interested in whether the f2 will work well or whether two in mono block would make a big difference

[@wegardfjeld3789]

Mono will in most cases give better results. But at that price it's likely you find better solutions

[@robsandler1818]

I own a ZA3 and while I do enjoy it, one thing that is a real problem for me is Clipping and the shutdown that follows. It's being reported by many reviewers, yet I didn't hear any mention of it in your review? If you turn the volume up, it routinely shuts down. I like the sound with the SparkOS Upgrade when it works. I ordered a 2nd to run as Mono Blocks and hoping that add a little more power will fix the clipping/shut down issues.

[@VirtualHiFi]

hi, thanks for your comment. well I never had such an issue with the amp. Either this one or Aiyima. The Qualio IQ go down to 3 ohms and I am using 48v 5A power supply per channel since I'm using them in mono mode. never turned off on me nor I heard clipping and I like to listen very loud for audiophile standards.

[@RomanBagdasarov]

@@VirtualHiFi Hi! How do you think, is it worth to buy GaN power supply for ZA3? Will there be a difference in sound?

[@VirtualHiFi]

Will ask Gosi to send me it and I'll test that. But there is going to be 10A 48v PSU which I believe will be a sure upgrade ;)

[@RomanBagdasarov]

@@VirtualHiFi Wow! now I'm very interested in this 10A 48V PSU! Also, since the left channel affects the sound even in mono mode, I want to try putting Sparkos opamps in the left channel too

[@VirtualHiFi]

Check out my sparks za3 video. You can remove all opamps and except for the one that is needed in the mono mode. Also if possible I also recommend using XLR over RCA for best sound. If you remove all unnecessary opamps they don't draw the current from the opamp power supply circuit making it more headroom for the opamp that is left ;)

[@vladimirjovanovic2803]

Hello, thank you for this comparison. Since I couldn't discern any differences between the amps from the video, even with headphones, the question is whether there is sense in investing cca 900 EUR into the Eversolo F2 Vs. investing cca 500 EUR in two ZA3s with upgraded op-amps? Also, I understand that the new 2x V3 monoblock amp + 48V/10A power supply bundle will be available soon for less than 300 EUR. I understood that the V3 has the same sound signature as the ZA3, so I'm wondering if that would be a viable alternative to an F2? Thanks Vlada

[@breathofawareness7903]

Sir what passive pre-amp are you using ? Or are you using the volume control from your DAC ? And if you run the Fosi ZA3 in dual mono mode, what do you need to do with the volume control ? Or does that get disabled and it functions as a power amp and not integrated when you put them in dual mono mode ? Thank you. :)

[@VirtualHiFi]

I am currently using both knobs of the Fosi and regulate 2 channels at the same time. But If your DAC allows for volume control, that will work. You can also try additional preamp to help you out with that ;)

[@breathofawareness7903]

@@VirtualHiFi Thank you so much for taking the time to answer my question. I love your videos !

[@hervebriandet1230]

Hello, thanks for your nice tests. Forme, Best spacialisation, soundstage for F2, better medium and voices for Fosi. I'm annoyed, I have a DMP A6 and Triangle Zays speakers and I'm afraid of too much shine with all Eversolo + Triangle

[@hervebriandet1230]

Eversolo more precise, sharper. Fosi more dynamic but a little colorful, more drooling end of note

[@blownouttransmission5832]

the fosi is a touch more pushed in the upper middle range , the eversolo sounds more expressive and calmer , but a touch soft in the lower bass registers with it. over all , the eversolo just sounds a bit more refined . but that's through my headphones to my ears .

[@gregor74xl]

apparently V3 mono is better is that true?

[@michaelcampbell9459]

Great vid but from your memory how would the Eversolo compare to the mono Fosi with their original opamps and not the upgraded Sparkos? Thanks

[@VirtualHiFi]

I believe they would sound quite similar

[@wegardfjeld3789]

How does the base and lower end compare? Did you try with different speakers? My experience with Fosi amps, BT 30 d PRO and V3, is a very lacking lower end with V3 and flabby with BT 30 d Pro and is why I'm not buying into the Za3 nor V3 mono hype. The PA 3 pre amp is muddy and really bad and shouldn't been bought even if low budget. Yes I have upgraded the tube on it.. Buying op amps more expensive then the actual amp is something for especially interested people since when you add that cost there is way way better amps avail. Used with XTZ 99.25 beryllium kit hey don't compare to an old Cambridge A640 azure sound wise so that means they are irrelevant for a living room. Yes that is when put into my higher end setup with a proper pre amp. PEQ and high end room correction adjusting doesn't change that because the amps sound anemic. Now F2 might have limitations in sound stage similar to Za3 but do you really say this is similar ? I will add that power ratings of Fosi is well known bullsh. Are the F2 the same ? Fosi are great for your desktop or kitchen system..

[@geevee1045]

Interesting comparison. But wouldn't turning the the volume up all the way on the stock ZA3 eliminate the NE5532 preamp chip altogether, or would it just eliminate the volume control contribution to the sound? If full volume eliminates the NE5532, why not just insert a good tube preamp to add some soul, some flesh and blood feelings to the sterile leaning class D amp?

[@VirtualHiFi]

Turning the volume knob to max just kinda shortens the potentiometer not the opamp path. Yes adding preamp will also change the sound, but still even with a preamp youll have not the best opamps in the amp circuit. ;)

[@geevee1045]

Yes, you're right. A tube preamp would be playing through a second preamp, namely the NE5532. So even if the NE5532 was a good preamp chip, it's still in the circuit along with the tube preamp I suggested. Changing the opamp is the best solution. Now, if only we can find cheaper opamps that perform as well as the Sparkos for less money. Thx.@@VirtualHiFi

[@mehmetcamat4458]

Which pre amp would suggest to use with fosi za3 dual monoblocks? Or do we not need it ?

[@justasimplefox]

You don´t need it 😊

[@9XThunder]

I use nobsoud e6 with uograded mundorf mcaps, very nice and very cheap !

[@piotrstawicki1303]

I'm curious about this crazy comparison between M8xi and Fosi in dual mono? Is there an advantage on the M8xi side as significant as the price difference?

[@VirtualHiFi]

I'll do some comparisons like that, but I'm afraid if you like for a lively open sound with amazing punch slam and not relaxed kind of presentation, Fosi will sound away better than the m8xi. Will need to do a test though ;)

[@michaelbogdanovich1247]

One main question: which is ultimately better in terms of sound, Hypex, Purifi or TPA, Infinion, or something else??? Price doesn't matter at first...

[@VirtualHiFi]

I'm in the Class D for a very long time and I had multiple Hypex, Icepowers, Purifi, AGD Gaan and many other chip amps over many years. I believe the most interesting at the moment is FOSI ZA3 in Dual Mono with rolled Opams. I now have the Sparkos but will do a Opamp Rolling video Soon. Yesterday I had a chance to breifly listen to the Fosi against Gryphon Diablo 333 and D'Agostino Progression 350. Both were using Gryphon Essence as a preamp. And with the Qualio IQ I'd both the Diablo and Fosi (withouth the preamp) had their advantages, with Fosi being the most dybnamic and with the biggest pump, and the gryphon was a bit more relaxed and still very good and I could happily live with it. The D'Agostino was a bit too harsh on the midrange and it's bass while powerfull had one dominating tone which wasn't great. Basically I'd say Fosi vs Diablo - matter of taste. Fosi vs D'agostino - well Fosi Clearly wins. And we are talkoing about 600$ vs 50'000k$ here :)

[@RyanChoo]

@@VirtualHiFi I have rolled LME49720 and MUSES02 and I liked them both! I am going to roll OPA2134 & OPA2104 in the next few days before coming to conclusion on how they all sound!

[@dwaynepiper3261]

I have heard a lot of chatter about the Crown XLS-1002. A lot more power than the Fosi. It would be interesting to compare sound quality.

[@VirtualHiFi]

Maybe if I get my hands on it 😉 power is not everything and I had few PA amps for tests and they all were just powerful 🙀

[@thierrybernot9369]

Hi. Well, there's a clear difference. Eversolo seems more classic and "centered" compared to the pair of Fosis. Lack of midrange ? It seems more laydback, less pushy. On voices, the Fosis put the singer on your knees (when listening on headphones) as the Eversolo has a more classic presentation. Great presentation as usual !

[@VirtualHiFi]

Thanks for sharing your opinion and positive feedback ;)

[@SERKAN_HOT34]

His solo AMP-F2 vs Fosi ZA3 does it play middle, upper sounds naturally realistic beautiful, like these two class d amplifier lamp amplifiers? Solo amp-F2 vs Fosi ZA3 which one plays more natural and realistic which one do you recommend and can the denon pma 1600ne, marantz pm8006, cambridge audio cxa81 have a better natural realistic sound than the amplifiers I gave this example?

[@VirtualHiFi]

I totally recommend you the Fosi, I had it against real giants costing tens of thousand of $$$ and it was a matter of preference which one one can choose. I know that those CA, Marantz etc are on the market forever and they are bigger and often pricier but that does not really mean anything ;)

[@SERKAN_HOT34]

@@VirtualHiFi Thank you

[@danielbrrio]

There's a DAC that they say hasn't been beaten yet. SMSL SU-10. I eagerly await the SU-10 test.

[@VirtualHiFi]

Thanks for sharing. I can see that it's available at Audiophonics so I should be able to get it for the review :)

[@danielbrrio]

@@VirtualHiFi Is the SMSL SU-10 better than the S.M.S.L D400EX? Have a confrontation with these wonderful speakers!

[@milosdunjic8718]

I have SMSL SU-9n and it’s great … SU-10 is probably even better

[@michaelcampbell9459]

Can the Eversolo also use upgraded Sparkos opamps as that would have been a more even comparison? Also, if using dual mono Eversolo since it is bridgeable would have been a more fair comparison.

[@VirtualHiFi]

Eversolo D-class Modules If I can see correctly have Opamps soldered on so it would require soldering so its doable but not without serous play. Also the price of dual mono Fosi with Opamps is still cheaper than the Eversolo F2 so its not that unfair now ;)

[@net_news]

sorry but the Fosi's sound much better more vibrant and meaty in the mids

[@VirtualHiFi]

You don't have to be sorry. I'm thinking exactly the same and it's good for all audiophiles ;)

[@bhaskarsaikia5586]

But which one among them has pronounced mids and yet tighter (and quicker) bass? Please answer

[@torus186]

You just need to listen for yourself

[@wegardfjeld3789]

One is capped by a passive Pre and the other uses its own volume controls where the passive just is a volume knob. This is not a good test

[@Bogdan0zaurus]

Such clips, for which I thank @VirtualHiFi, are extremely useful because they offer a lot of very useful information and draw our attention to some quality products. But here is a lot to discuss here. For a fair comparison, a single Fosi or two F2s should have been used in bridge mode, and obviously the passive amplifier also raises many question marks. Also, if on a certain system Mr X thinks Fosi sounds better, on another system Mr Y might like F2 more. I didn't listen to Fosi, but I listened to F2 and I liked it a lot. I can't say that I heard any difference and in general I think that you can reach definitive conclusions only by listening to the live system and not on KZbin clips.

[@RyanChoo]

Fosi ZA3 only sounds good when used as monoblocks and with 48V power supply with op amps rolled. This comparison is fair and should suffice to give you an inkling as to how they sound. Listening with IEMs, you can hear their differences quite distinctly. We definitely are not listening out for audio fidelity on KZbin because you would never want to do that to decide on buying one for your sound system. But, I did so! 🤣 The Fosi ZA3 is exceptional! Please ignore the pricing and get 1, no 2 to try!

[@Bogdan0zaurus]

@@RyanChoo I didn't listen with IEM but with Meze 109 Pro, which are very good headphones in my opinion, and not just mine.

[@VirtualHiFi]

I only had one F2 so I could only do what I could ;) Yes 2 fosi with 48v 5 a PSU each and upgraded opamps is a giant killer. And if you are using the XLR well I prefer if over many stupid 💰💰💰💰 amplifiers ;)

[@phillipmorris9847]

ZA3 thank you for sharing

[@VirtualHiFi]

My pleasure ;)

[@alberto3028]

Thank you for the comparisons. Why not compare the ZA3 with a high-end Class A or A/B amplifier? Maybe that way I'll be encouraged to buy it, haha.

[@VirtualHiFi]

I will for sure, but need to find a worthy opponents for the ZA3 😜 Fosi is going to send me the new monoblocks very soon and I hope they will be even better and I plan to execute the really HighEnd comparisons after that. And if ZA3 will remain a king I'll know and do that instead ;)

[@heriacosta5452]

Let me give you 2 Amps to compare Cambridge AXA 35 & Audiolab 6000A both are AB Amps

[@TriAmpHiFi]

Wow. Incredible video production. Outstanding effort & you're truly gifted.......................... Wouldn't buy that Neversolo if my life depended on it. Buy a Schiit Vidar instead. Acid Jazz, Funk & Brass 🔈🔉🔊

[@34332]

For me the ZA3's take the cake for being more involved and expressive, where the Eversolo just, everso-slightly, doesn't get there.

[@garlys3417]

The Eversolo is a good class D amp, a little flat in the midrange, controlled bass, good dynamic but Fosi-Sparkos is above it and when you know the price difference, it's even more convincing. Please, can you play Actor from Tong Li the next time ? Thanks

[@VirtualHiFi]

Hello Thank your for your vote. When it comes to music, until YT add a paid commercial music library for creators, I am only using the music I have rights to use :)

[@garlys3417]

@@VirtualHiFi Ok I understand, thanks a lot for your job and sharing your passion.

[@Beoliving]

i'm unable to pick up the sound differences between the 2.

[@przemekmarciniak8007]

Fosi ZA3s sound much better for me, but how would evaluate the soundstage depth produced by them? I'm asking since I'm going to return my ZA3s due to almost completely flat soundstage. Maybe the op-amps roll would improve it, but the result with the standard op-amps is so bad I don't want to invest more time. Just to be precise - depth is the problem, width of the soundstage is ok,

[@34332]

Depth compared to what? Soundstage depth is usually provided by placement of speakers, type of speakers (pointsource for example), room acoustics, distance to walls, reflections, dispersion. What source do you use, quality recordings, etc. I use the standard ZA3's and Wharfedale Lintons, MiniDSP Flex/Dirac as pre and WiiM as streamer. No lack of depth at all.

[@przemekmarciniak8007]

@@34332 Compared to my old A/B class amp (Peachtree iNova) and using the same bookshelf speakers. The old setup is really good in imaging. I wanted to use iNova as pre-amp and add some power with ZA3s as monoblocks, but the soundstage depth was gone almost completely. I compared both setup using the same sources and recordings, of course.

[@34332]

@@przemekmarciniak8007 That sucks. Usually the pre-amp dictates most of the magic in SQ, but poweramps shouldn't really. Guess it's in the synergy between pre- and poweramps? Have you tried a source/DAC directly into the ZA3's?

[@przemekmarciniak8007]

@@34332 I did. There was no real difference. I produced some depth with another DAC (Mojo 2) connected directly to the ZA3s, but still there was night and day difference comparing to the iNova.

[@RyanChoo]

@@przemekmarciniak8007 I switched from Mojo 2 to Holo Audio Cyan 2 and the soundstage expanded in width and depth (height is minimal).

[@michaelmityok1001]

What's the whole equipment stack?

[@VirtualHiFi]

Just added to the description :) THIS SYSTEM: AMP: FOSI ZA3 + Staccato / EVERSOLO AMP F-2 SPEAKERS: QUALIO IQ - www.qualioaudio.com STREAMER: Auralic Aries G2.2 DAC: Holoaudio MAY KTE CABLES: Audiomica Excellence USB, VirtualHiFi interconnects and speaker cables FOOTERS: VirtualHiFi Vibron

[@michaelmityok1001]

​@@VirtualHiFigreat channel 👏 moving forward list all components of the system, and if possible it is best to have a reference system so there is a consistent benchmark.

[@mattfranklin3622]

Have you seen their announcement about their balanced Monobloc with post filter feedback?

[@pokrog]

Where did you see that announcement?

[@mattfranklin3622]

@@pokrog I’ve seen it announced on their official Facebook page. The amp looks like it could be a game changer.

[@pokrog]

@@mattfranklin3622 I talked to them about a year ago and they sent me some renders of an HD-A2 class A monoblock and I'm wondering if that's what it's going to be or if that project got scrapped.

[@mattfranklin3622]

@@pokrog No, The V3 Mono is class D and uses the 4 channel 3255 chip in PBTL mode to give 1 channel.

[@OldMeloman]

Fosi better

[@AusGanesh]

Thanks for much anticipated video, the amps are close in sound reproduction. But the Eversolo has much bigger better sound stage and the vocals sound more natural and easy to listen to than the Fosi. The Fosi has a more pronounced treble bordering a bit on the harsh side. Fosi will be more suited to system lacking the treble energy. I know Fosi is very cheap, then again the cheap sound. My advice would be to use tube line stage and you will get closer to a high end system.

[@RyanChoo]

The Fosi ZA3 is not cheap sounding just because it is cheap and you heard it on KZbin to make this opinion. Knowing who bought and heard them in their systems and you will have to retract your statement. My dealer who delivers my new ATC SCM19 was in shock that the ZA3s could drive them and sounded very fine. Price is deceptive and never let anyone tell you that you need an amp of a certain price range to match your speakers. This is a new era of high fidelity!

[@ericelmore887]

Check out AGD gaN feed class D or budget friendly orchard tree Audio class D gaN design

[@VirtualHiFi]

I'll try to get the Orchard sometime since it might be interesting :) I had AGD Audion with their preamp here nearly an year ago for tests and it was on the very neutral, and quite relaxed way. Supernait 3 was a way better match for the IQ since it has amazing energy at the lower midrange and pump in the bass. And since I like moded Fosi ZA3 more than Supernait 3, .... ;)

[@robertdebellefeuille245]

Can I use the Eversolo dp6 as apre amp with the Fosi

[@VirtualHiFi]

Sure. Just set the volume knob of the Fosi to the max and regulate the volume with Eversolo as preamp

[@AusGanesh]

Has anyone who is using the Eversolo DMP A6 Master Edition noticed any changes to sound quality changes within the 2 weeks? My one went through a software upgrade and the sound stage and the 3D holographic sound expanded to another dimension. Wow, wow never expected this kind of improvement in sound quality. I have no affiliation with Eversolo company, but amazing improvement. Mine had around 100 hours of use now.

[@RyanChoo]

Software/DSP enhanced?

[@VirtualHiFi]

There was one software upgrade recently but I did not do it yet so ...

[@user-mvgo]

Fosi ZA3!!!

[@VirtualHiFi]

Thanks for your vote ;)

[@牧園-m4x]

Fosi sounds so much better than Eversolo lifeless.

[@psyphonyxaudio]

Starke Sound Fiera 4 Amp. **

[@psyphonyxaudio]

Fantastic recordings.. - All copyright free songs? That's a smart idea. I'll have to use some of these also. Great A / B style video. Sounds great tbh .. surprisingly.

[@VirtualHiFi]

Thanks for sharing the comment and positive words :) Yes I try to do all copyright free music since you never know when the label will change the policy like few weeks ago Universal did with TikTok :)

[@sc0or]

Eversolo sings, Fosi saws wood.

[@bujaremini8796]

Fosi wins

[@VirtualHiFi]

Thanks for sharing your opinion ;)

[@jfd7cf]

The Fosis sound louder.

[@VirtualHiFi]

yes because it has more pronounced midrange. I calibrate the levels using pink noise which averages the sound signal, but when you listen to the tracks with bass you will hear that fosi is is not louder there

[@jfd7cf]

@@VirtualHiFi Thank you. Do you level for Peak or for RMS? I also hear a tiny bit more Bass from the Fosis.

[@RyanChoo]

@@jfd7cf You heard it!

[@richardde-j8y]

i have the f2, but i hear nothing special, so i'm selling it again

[@milosdunjic8718]

nCore and Purifi is much better

[@vitalll84]

Fosi ZA3 is not best mono amp from China, compressed sound. In my ears Aiyima A07 Max is many better then Fosi

[@legione1capone]

Im sorry but there is zero comparison from a fosi to just about any tube amp. None!! 😂😂😂😂

[@ropeburn6684]

You're right. Any tube amp will have much higher distortion, be less linear, much more dependent on the speakers, and have no power reserves at higher volumes. Zero comparison.

[@legione1capone]

@@ropeburn6684 this response clearly shows your lack of experience

[@MICAMOTEESTABIENGRANDE]

I think is you the one with lack of experience. I've had the experience over the years comparing brands and offering from up to $1000 from each brands such as Onkyo, Yamaha, pioneer and Marantz. Offerings from below $500 from brands such as Emotiva, Aiyima, SMSL and custom designs with different topologies such as class D chip based from Texas instruments, Analog devices and infineon and why not, the classic Teipath chips. Haven't heard any modules from Gan, Ice power or Hypex or purifi.... I have a good amount of Tube preamps modules and currently own a tube amplifier. Lately I've been playing with Class AB with discrete input design and tube buffers. This sounds really good. The Tube amplifier sounds Best of most of my implementations, however, Class AB with buffer's beats the tube amplifier in dynamics region and resolution. Having said that, my class D Analog devices implementation has been a long time favorite of mine, i listen to it daily as well to my clas AB with Tube buffers more than my expensive Tube amplifier. Just because is class D doesn't mean is inferior to Tube amplifiers or ones that cost several times more ... At the end is all about how well you implement it and taste.

[@legione1capone]

@@MICAMOTEESTABIENGRANDE 🤣🤣🤣🤣✅🤘

[@razzman2987]

Fosi bullshit

[@oliverosrecki7421]

Whay you think about for FOSI? What think about Eversolo?

[@Азместьцарь-б7ъ]

Усилитель не стоит вашего внимания. Это самая дешевая реализация чипа с огромным уровнем искажений.