Amazon purchase link-- amzn.to/3O5qfVf Official purchase link---- bit.ly/fosiaudiov3 Aliexpress purchase link- www.aliexpress.com/item/1005005605031795.html 12$ off promo code: FAV3ZRS12 (works for all platforms) ⚔www.SubscribeStar.com/Zeos -- Support the Channel on SubscribeStar 🥇www.Patreon.com/Zeos -- Support the Channel on Patreon

The real revolution is the Texas Instruments IC chips that these low cost high performance amplifiers are built around. Kudos to Fosi & Ayima in applying those chips, pioneering low cost & high performance amplifier products. Established companies (like Yamaha, etc.) need to do the same with their receivers, lowering cost & raising performance at the same time. Credit companies like Texas Instruments (❤ to Texas), who is continuing to design better class D amplifiers while keeping the cost low, charging just $6 per chip from Mauser electronics. We live in a new golden age of amplifiers.

@trog69

11 ай бұрын

And here I am with a closet full of big power amps of 200+wpc.

@michaelbrandt9806

6 ай бұрын

Thats fine.

@OrazCostanzo

6 ай бұрын

Then you look at the snakeoil killing the industry with 10-20k amplifiers.

You can disable the bluetooth on the BT20a pro by holding in the volume knob.

@ingalook

11 ай бұрын

Great tip... especially because no one reads the manual.

@AdamMrozek84

10 ай бұрын

No, just reset the source

For the record, into 4 ohms the V3 has been measured at ~140W per channel with the 48v power supply. It's around 60W per channel with the stock PSU. Not that it matters unless you have a huge impedance spike in your speakers response

@mindtraveller100

11 ай бұрын

What was the frequency of the signal? For how long did it measured that? What was THD? What was the impedance? How many channels driven?

@mikelanier5617

11 ай бұрын

​@mindtraveller100 Google sounds like your best option. Enjoy your specification homework 👍

@juliangst

11 ай бұрын

@@mindtraveller100 frequency:1kHz THD+N: -74dB Impedance: 4 Ohm 2 channels driven at 8 ohm you get 89W

@ZReviews

11 ай бұрын

42v or 48v?

@carbon_wavelight

11 ай бұрын

@@ZReviews 48v, my bad. Original comment was a typo

I’ve been playing with the V3 for a while using the 48V 5A power supply and let me tell you, this thing really benefits from active cooling. When it gets warm the sound quality falls apart quite a bit. What I discovered is that a computer fan set at a low speed brings the case down to near ambient temps so it doesn’t take much but it’s really worth doing.

@gamerman644

9 ай бұрын

if your v3 is getting very hot i would recommend trying new thermal paste and adding some to the metal that touches the case in between the heatsink and case has none. i did this to mine when i swapped opamps to OPA1656. but my main point is im running the v3 with 48v 7.3a and was using it with a 48v 10a and never had a problem with heat at all, my dac gets more warm in the stack than the v3

@Iinustechtips

8 ай бұрын

do you have a link to the power supply that you are using? i dont really want to buy the fosi one.@@gamerman644

@RUMBLEGO1

8 ай бұрын

I have not noticed this at all and i get loud enough for me. 85 to 90db. Maybe you are even talking louder. I don't play thunderously loud metal music or anything though so maybe that is the difference. I do love good bass slam and this little amp delivers. Shocked actually!

Review I been waiting for…cheers bro! Ordering one ☝️

Awesome. Hope to see more these. This is the new trend of amplifiers. A comparison of Aiyima vs Fossi?

that unexpected rage at the end, love it :D

Z, thanks for finally linking something to look at your homemade cable, been wondering what that was for WEEKS. That's how you run headphones off of any of your speaker amps??

I use the Fosi P1 as a preamp and it has tone controls. Good review

Yay, I'm sooo glad you and Fosi got in touch for this as I tried to tell ya about it in email, lol. They had like 20 of their customers provide input on something next level. The swappable op amps are even better with Sparkos. The heatsink is now away from capacitors underneath the board and better airflow means less deterioration of the caps long term. Have you seen the guts inside? Top shelf... so happy my favorite reviewer got his hands on a product I feel a part of and thanks to Fosi for their listening and production of something so valuable for the price point. They even are now an authorized resales for Sparkos op amps since so many swap for them, so the future looks pretty interesting

@MiguelAngelVelazquez

11 ай бұрын

I would not stretch too much and say the V3 components are Top Shelf, there is still room for improvement. Its Elna capacitors are the bottom of Elna audio grade capacitors. The Elna Silmic II, Those are top shelf, or Nichicon Muse UKZ or Fine Gold UFG. But I get your point, the V3 uses better components than the competition and other Fosi amplifiers. If you are handy at Soldering, you could replace those components yourself.

@daviddrake6875

10 ай бұрын

How about that! Rolling parts!

@iikatinggangsengii2471

8 ай бұрын

yeah they def worth auditioning

British Audiophile said get one and I heard you mention it. So I got mine a couple weeks ago. It is SO clean. Best, D.

@iikatinggangsengii2471

8 ай бұрын

cleanest

I'd like to test if the variable power supply is changing anything itself. In other words test it with the bricks Fosi sells. And for speakers use Klipsch (high sensitivity) vs Micca RB42. I can tell you because I tried the speakers, the Miccas walk all over the Klipsch but you have to crank the volume knob to do it. With Miccas you really need the 48v brick, with Klipsch you don't. They both sound good depending on if you like the speakers sound signature. edit: wrote this before I saw the entire video

@iikatinggangsengii2471

8 ай бұрын

true2 expensive speaker vs headphone

I ordered!I like it! And you can change the opamps in it ☝️

Thank you for the Aqua Teen Hunger Force flashback. I already bought a Fosi V3. Love that little amplifier.

Hello Z, hope your're doing great. What would be the best pairing for a DX3pro+...the Topping PA3s or the Fosi BTA20 Pro? Thanks!

Just bought the V3 along with those $99 Jamo S803 yesterday. Probably way overkill, figure it'll handle beefier speakers when I upgrade down the road. Now considering swapping the V3 for the BT20a Pro for the tone controls.

@jamestimmons6022

11 ай бұрын

those Jamo S803 will suprise you! i know i was blown away by them

@ttr3651

8 ай бұрын

I have both but prefer the V3. Z repeatedly said the V3 and BT20A Pro have the same internals, they do not. Looks up photos, the V3 has two massive caps the size of your thumbs, the BT20A Pro does not. Also see ASR measurements, both are better than the TB10D but the V3 is king and you can hear it. I’m a little surprised Z didn’t hear it. When listening to both the V3 has better, flatter bass extension with a slightly cleaner, more delicate sound. The tone controls are pretty nice on the BT20A Pro but I’d still recommend the V3 over it if you can work on your room to minimize you need for EQ. The BT has a really inconvenient Bluetooth implementation, it is very annoying to switch between inputs because as soon as the device is on it connects. Reset to unpair. Works fine in either mode, just not both regularly.

The amp using the 48 v power supply puts out 161 watts & headroom 191 watts reviewed by audioscience. The smsl a300 in bride mode put out 400 watts per channel.

I wanted to support you with your Amazon link Zeos but Amazon screwed me on delivering my BT20a Pro(to replace Topping MX3 powering RB42's from previous recommendations), so I ended up cancelling the order and order directly from Fosi for $115.99 with the 48V power supply vs $99.99 on Amazon with the 32V power supply.

Can you do a side by side comparison to the infineon amps? I have the smsl da18 and curious about these for my t50rp mods.

One thing that is important is that lab ppwer supply is no doubt better than the ppwer bricks they send with everything these days. One potential reason why it's more quiet. I have thought of getting a big lab ppwer supply in the past for diy projects or for powering other things. Most of them have great specs, they are cheap and so many brands as they have been making them for many years. Thanks for the entertainment !

I'm sold micca rb42 and the fosi v3 with the 48v power supply for the extra $50.. but I'd like to use my phone or my tablet as music source what you guys recommend? Something on the price range like this fosi would be awesome.. 😎

Sounds wonderful paired with the Chane A1.5, and running from the Sound Blaster AE-9!

If you lower the volume of the source and crank the volume of the Fosi aren't you still putting massive power into the headphones anyway? Or is that only with class A?

Hi, I just got mine. I am having problems with getting the headphones to work. Using the 3.5 jack, for some reason it just bypass the sound. Any advice would help. Thanks for your channel Zeos.

Since you were the one who turned me on to Micca RB42s, I have to tell you they sound awesome with a BT20a Pro. I had them with a Klipsch R-100sw but they didn't need it at all. I'm using the stock 32v power supply so I had to turn the volume up to 3/4 but it sounded awesome. I'm using Klipsch R-41ms until I upgrade the power supply (I want the Sparkos op amps too), but they need the sub and imho don't sound as good as the MIccas loud. edit: wrote this before I saw the entire video.

@fosiaudio

11 ай бұрын

You need to turn the volume up to 3/4 becuase the BT20A PRO adopts a taper A potentiometer. It's more linear for human ears.

@kraig7777

11 ай бұрын

@@fosiaudio I was just trying to say I had to turn the knob farther with the Miccas than I do with the Klipsch to get the same sound levels. With the Klispch I don''t feel like i need the 48v power supply, but I do need the powered subwoofer. With the Micca RB42s I needed the 48v power supply but not the subwoofer. My plan is to do it all. RB42 plus 48v plus Sparkos op amp plus Klipsch subwoofer. Wiim mini to SMSL SU-1 for source.

@dennisjackson8391

10 ай бұрын

They do sound great together. I bought that for my son when he moved into his new house. He loves the setup.

So do you think the more efficient final production version Tungsten would benefit from the 48V/5A power supply for the V3 or is that overkill? Btw, I found both a 4x spade to 4-pin XLR and 4x locking banana plug to 4-pin XLR adapter cable, made by Mogami and FiiO just released a 4-pin XLR to 4.4mm adapter so you don't need to DIY it if you don't want to.

At 9:52 I thought that was a filter lol. Surprisingly good as mellow Donald Duck impersonations go.

Is there any actual limit how much a speaker can be built to move forwards and backwards?

So I bought the Fosi upgraded power supply already(bass-ackwards?). Will be getting this amp Z mentioned there was a coupon, anyone know of it? Thank you

Would 2 of these with a pre-amp run my ohm walsh 2s? I want to get the beautiful sound out of my speakers that I know they can produce. Time for a change from my vintage marantz and Yamaha amplifier

Can I use the Preamp of my Element III as input for the V3? And if so, what do I have to mind if i want to connect my Tungsten to the v3?

What happens if you run a pair of passive speakers and a subwoofer 150W without a preamp, (by only using the Fosi-Audio V3)? would it work?

ANyone else have any opnions on this vs anything new that has shown up?? looking to buy my 1st but wanna go as good as possible to start .

What is a good beginner amp speaker setup ?

I think on the BT20 a, you can press the Volume knob in to disable the Bluetooth.

@ZReviews

11 ай бұрын

Will give it a shot

Think I need should get the 48v for something like the whaferdale 12.1? does it sound better

I saw from creator you try tungsten on v3 without preamp and in this vid u use with preamp any reason?

Why is it so hard to find a budget amp like these with optical?

Would I be able to use this with my home theater system?

That pass through is no more than a Y cable. Nothing you send into the RCA goes into the Amp to come out the 3.5. You can actually use the 3.5mm as an input as well.

how did you connect the amplifier with the headphones?

i run two v3s from a schiit syn to get surround sound (two polk psw-10s, two polk es-30s , polk cs-10? for center and some polk blackstone for surrounds. my mains sparkos v3 amp has a 48v power supply and i do use a cheap beringer 9 band eq for tweaking. i gotta say every time i think i might replace it with something....when i dial it in, i get a fantastic sound and say, ok...im good. i get no hiss at all. for a small black metal box for 100 usd.....it really does deliver.

I don't know if this was mentioned, but the BT20a Pro has an actual pre output. You can use an active Subwoofer and change the volume on the amp.

What affordable dac would you guys recommend for a 2.1 bedroom setup with this amp?

@ZReviews

11 ай бұрын

Smsl makes an adorable little unit. Su1?

@iikatinggangsengii2471

8 ай бұрын

anything with most details, you dont want to miss anything w these

just wondering, i was about to get a pair of speakers and im torn btw thos Micca RB42 (would get the BT20a) and the Edifier 1700BT, which one is better?

@francohic

11 ай бұрын

I have the 1700BT and dont really like them that much

@christophedecavalla2941

11 ай бұрын

I have the rb42 powered by the v3 and they leave the 1700bt for dead. Not even in the same league. Sound is balanced and you are better of with the better sound quality than tone controls.

Where can a speaker cable and adaptor for running headphones be purchased that is made already? Thanks !

@ZReviews

11 ай бұрын

They make premades on AliExpress. I built mine

Z goes on about needing big capacitors so what size capacitors do you need?

Thank you for such a quick answer. I have q acoustics 3050i 91 db sensitivity. I love your videos, you do a great job on KZread. My next purchase will be Swans m300mk2. Is the sweet spot of these speakers narrow? Because I want to buy them for the living room and I don't always sit in the middle.

@AdamMrozek84

9 ай бұрын

????????

@ZReviews

9 ай бұрын

You will be fine with Swans in even a large room. Enjoy and thanks!

@AdamMrozek84

9 ай бұрын

@@ZReviews THX !!! 😀

OMG, my hair, LMAO! Great vid.

Cool test track for speakers: "Agelast" from Meat Beat Manifesto. Nice imaging and bass test. Something a little different. Cheers dude.

I have the second version of the Emotiva a-100 amp and I can verify that it powers 4ohm loads just fine, though the cooling could use bolstering. I have mine under a big fan so it's cooled a bit.

but if i use it for klipsch rp600 or 6000 than wil it be better

Now that's a Lab !!!

Waiting for the day when Micca releases the RB-62...

far out!i nver even heard of Westworld until i was forced to watch antenna t v the other day. what a foreshadowing movie for these times.

This V3 togehter with the P3 and the K5Pro DAC will be one of the most interesting hifi setup for starters and users...find some nice speakers and you are ready for a long time.

is it good idea to get this to power front L/R, so avr can C and surround? i have Klipsch synergy F2.

@ZReviews

11 ай бұрын

I actually might try that

@gupdaddy

11 ай бұрын

This was my question as well

Is the TB10D similar?

Nice shake down. I got one on order. 😊 so you don’t think the Japanese and German upgrade parts on the V3 make a difference over the BT 20 pro? Really?

@iikatinggangsengii2471

8 ай бұрын

they are indeed more accurate, other one like a best ramen in store, but as said, more straightforward excellency

On my Elac unifi 5.2's i had to nearly max the fosi. They sounded good but i don't like playing at 90% max volume on max gain from my pre, i like my headroom. My Aiyima A08 pro LOVES the 48v power supply and i'm running at about 33% less on the volume from the stock 32v PS.

@fosiaudio

11 ай бұрын

You need to max the volume because it uses a taper A potentiometer, it is more linear for human ears.

@jrdelat5

11 ай бұрын

To 100%?

wanted to get the swan d300 but not sure now thinking of smsl ao300 with Qacoustics 3030i any thoughts anyone?

Keep in mind, that fossi v3 is best ran on a 48v 10 amp PSU! it will also run on 52v but at the risk of more heat (probably as much as +20% degrees)

How many watts to output max speaker connection

Z, Could you link banana plugs that " actually " fit the V3. Best, D.

Can I pair it with Klipsch Bookshelves R 50M

I tried to buy it on Amazon and it's not even there.

Tank Girl Background! Woot! Hard to Drive 4 ohm Speakers? Magnepans are kinda the go too for hard to drive speakers. Mid 90s Thiel speakers had a reputation for being hard to drive as well.

Put the rb42 passive radiators on the sides( mirror imaged, of course)

You Z are the one that got me into the MB42 and 42x's back in like 2016 lol... I now rock the rb42's myself big Micca fan... to see you use the rb42's in this vid is pretty awesome dude.

I ordered the V3 through Amazon. Is that why I didn't receive the orange volume knob?

@ZReviews

11 ай бұрын

I think that might be the case

@armyofdorkness6159

11 ай бұрын

The orange knob is an add on. It doesn’t come with it stock

if you have the option turn the bench powersupply to 10A 48v

Where's that stand from that you have the V3 on?

Where can I get said 48v power supply. Also, can you use a subwoofer? TYIA

@ZReviews

11 ай бұрын

I linked it in the description

@chrisy4011

11 ай бұрын

@@ZReviews Thanks Z!

Planning on get one to power my Magnat transpuls 1000's

Is anyone using the 32v 5a power supply that came with the A07 with their Fosi V3? It is definitely physically larger and fits. I'm doing it just for that reason but don't know if it is better or worse.

@RUMBLEGO1

11 ай бұрын

update....got the 48V 5A and without a doubt worth it for me!

@jean-claude307

10 ай бұрын

@@RUMBLEGO1 Have a meanweel 48V 4.4 A Would it make a big difference with the 5A from Fosi ? Thanks

@RUMBLEGO1

10 ай бұрын

@@jean-claude307 I don't know. I did see a video where someone measure some of those supposedly better power supplies. They performance was really dissapointing in the measurements. The Fosi 48 was excellent in that same video doing the power measurements etc. I'm not a technical guy sorry!

@jean-claude307

10 ай бұрын

Thanks. My choice is now made @@RUMBLEGO1

Something tells me that your 48v silver power supply that you built is way better than the 48v power supply that they sell you for $50. Could be wrong but yours looks like a tank of engineering. I have the V3 and would be tempted to by the RB42's if that $50 48v power supply were actually really a good one. Anybody?

@christophedecavalla2941

11 ай бұрын

It’s good and literally doubles output. Definitely a good unit

@RUMBLEGO1

11 ай бұрын

@@christophedecavalla2941 Are you speaking of the Fosi 48V?

@christophedecavalla2941

11 ай бұрын

@@RUMBLEGO1 yes the 48v power supply.

Thinking to power Q-acoustic 3020i with these.

@martinrichards6683

11 ай бұрын

I would go with the Bt20A Pro + QAs. Unless you're equalising at source, the tone controls on the Pro will make a far bigger difference to your listening enjoyment than the slightly better SQ of the V3.

The bass was weak on electronic music compared to my class AB amplifier. I just ordered the other 48v power supply. So far the mids are ok but bass is poor. I'll update.

@ZReviews

11 ай бұрын

Not knowing what your speakers are it could very well be the power supply

@psysword

11 ай бұрын

@@ZReviews JBL 4312 SE with 12 inch woofers. Might be still a tall order for these 90 DB 6 ohm speakers which are doing great with my Chord Anni @10 watts. Class AB. Have also ordered the Burson Audio time keepers monoblocks @30 watts pure Class A. So I will arrange a shootout soon!

The posi v3 and posi bt20a have different heat sink designs. Thus the v3 can pull a higher amp draw without heating up as much . I think, the v3 can sustain a higher output for a longer time. The v3 uses the aluminum body to dissipate heat. And the bt20a uses a conventional finned internal heat sink. I think v3 has a much better heat dissipation .

Where are the links to the things, Zeos? You forgot the links to the things!

What is better for a 2.1 System, Fosi-Audio V3 or SMSL A300 ????

@TeslaCollie

4 күн бұрын

Fosi za3 or aiyima a70

Can you do reviews on Bang and Olufsen or Dynaudio speakers?

@ZReviews

11 ай бұрын

B&O are pricey. I'd need a dealer to send them out.

@zehgames6064

11 ай бұрын

@@ZReviews Yea I know. But if someone can do it, it’s you 🔈

Can you put the links for the power supplies? They’re not in the description

@ZReviews

11 ай бұрын

I can't believe I messed up that bad. All links added.

@E_o_D

11 ай бұрын

@@ZReviews Thanks!

The internals and engineering of the v3 is the most diferential aspect vs other amps with the same chip. Haven't tried it, but the general opinion seems to be it has an overall better performance because of that.

@MiguelAngelVelazquez

11 ай бұрын

Yes. The V3 is the first to offer a decent quality components: coupling capacitors and output filters inductors and capacitors. All these amplifiers have a very similar design. The difference lies on the components. Having said so, you can always upgrade your amplifier components to whatever you prefer. The problem with the BT20a pro is Fosi failed on the coupling capacitors and on the output filter capacitors. But they did correct them on the V3. Unfortunately, there is no room for inductors upgrade like Wurth or Coilcraft (expensive ones) like the ones Topping used on the PA5. Those inductors make all the difference in the world. The A07 does have room for that upgrade.

@fosiaudio

11 ай бұрын

@@MiguelAngelVelazquez Do you mean replace inductors by yourself like op amps?

@MiguelAngelVelazquez

11 ай бұрын

@fosiaudio well, it is not as simple as replacing the Opamps. But if you are handy with a soldering iron, you can do it yourself. The only problem I see is there is no room for those (Coilcraft or Wurth) inductors. The latest models from Fosi and Aiyima already come with very decent inductors(Sagami)

@JoseFerreira-zb7wh

11 ай бұрын

@@MiguelAngelVelazquez maybe in the future they can make that update and introduce those inductors you mention, along with a bigger casing. I don't have any soldering experience/ knowledge so i hope they come preinstaled.

@JoseFerreira-zb7wh

11 ай бұрын

@@fosiaudio maybe this could be a way to improve your next generation of amplifiers even further 😀

ya class d make great headphone amps. fosi never sent one for testing. to bad I have a few design ideas >:)

Hi, I have a Fosi audio bt20A pro, when it is turned on there is a slight noise coming from the tweeters. Is this normal and can it damage my speakers? Andrew Robinson mentioned this in his YT video.

@ZReviews

9 ай бұрын

Won't damage, just interference with the BT probably. Just be weary of any pops as those can cause damage.

@iikatinggangsengii2471

8 ай бұрын

i think he did ask abt pop noise

@iikatinggangsengii2471

8 ай бұрын

no clear answer on web, i usually just turn the speaker off first before the amp, and vice versa amp on first before speakers

@iikatinggangsengii2471

8 ай бұрын

i do not want to take even slightest damage risk, could potentially degrade quality

Sounds great at moderate volumes but lacks bottom end thumb of a good amp

If they made one that was a balanced mono block wow, that would be god like

@fosiaudio

11 ай бұрын

Wow, that is a good idea!

@Tommyvang187

10 ай бұрын

@@fosiaudio DO IT!!

@iikatinggangsengii2471

8 ай бұрын

its the endless race, think ive given clear idea that one suits dap best

@iikatinggangsengii2471

8 ай бұрын

balanced style would just be a lowend ciems w senn price, not too appealing

please review Meyer Sound Amie active 900 watts monitors

you cant touch the tone controls on these texas instruments amps that have them when playing at very high volume. It clips badly. Its not bottoming out the rb42 its just a nasty hard clip from the amp. My a07 pro does this... it sounds terrible lol.

9:51 isn't that just how the SBC codec sounds on bluetooth?

@ZReviews

11 ай бұрын

No this was exceptionally bad

how does this compare sq-wise to the smsl a300?

@ZReviews

11 ай бұрын

Its better than most Amps out there. The Infineon stuff is close in quality at low demand but this has so much more power.

@iikatinggangsengii2471

8 ай бұрын

should be competitive w the 600 highend iem w fun/ musical signature, highly recommended esp the rare ones

@iikatinggangsengii2471

8 ай бұрын

youll hear flagship traits w both, good picks esp the other one is 1/3 price

This is Class D and that maybe not so good, but you can play music very loud,but i have for many years ago two mono blocks at 600 watts per channel ice class D,that was very good.

fosi bt30d pro vs fosi bt20a pro Which is more successful?

@iikatinggangsengii2471

8 ай бұрын

well the other one is ramen made by ramen founder

pop noise when turning it on/off ?

@donalonso2785

10 ай бұрын

no

But will it power a record player?

Comment #4 (for the algorithms): I remember when every vid I faved on YT would automatically be posted on my FB page. For some reason I thought it was important that all my FB friends saw every video I saw.

@ZReviews

11 ай бұрын

I literally had set to tweet every time I set up a video. When they remove that feature I was very sad

What music is this? 25:17

You get what you pay for. Using the 48V 5A power supply, it can be a fire hazard. Spend a little more and get the Sony STR-DH190 ( $149.00 @ BB).