Fosi Audio V3 Mono Amplifier Review

[BrokenOath]

Via. YouTube? Probably not.

Alpha Audio, however, also on YouTube, are having very good recordings, and I can hear the differences in amplifiers via wireless earbuds for 30€, using my Nvidia ShieldTV as Bluetooth source.
But this kind of demos will always be limited.

Interesting!! - I listened to his audio samples using a FIIO FH9 IEM, I preferred the sound of the AMP A; this sound is more to my liking/taste.

 

[avdoc]

Per Cheapaudioman the units he had barely got warm (

). I'm hoping the faulty power supply the Scientific Audiophile had may have been causing the heating issue (

).

 

[TheBatsEar]

Am I the only one who is concerned about the recent Fosi marketing campaigns that are all about kickstarters and pre-orders?

Don't buy it if you don't like it. I for one will buy them on Amazon eventually, unless the beta testers have problems.

a small business trying to disrupt a market

What does that even mean?

You haven’t lost anything worth critical consideration

Except the ability to use them more than a meter or so apart from another.

Sure it is.

What else do you know about the Fosi V3 Mono Plus?

 

[BrokenOath]

I subscribed to the kickstarter and received the email this morning with the link to order, but I decided not to order them; I'll wait.

 

[surroundman]

Don't buy it if you don't like it.

This pseudo-"argument" quite often does not age well.

 

[billymac]

What does that even mean?

In this context (and in my opinion), creating a lower cost point of entry for features that typically cost considerably more.

 

[sl1982]

Can anyone explain the point of the MUSES02 opamp chip in the stretch rewards? If each of these uses more than one opamp there isn't much point in getting one. Unless it is one per amplifier ordered but still doesnt make a lot of sense.

 

[YesChickenNuggets]

Sure it is.

Guess I'll be waiting for the RCA optimized version then.

 

[Guddu]

Except the ability to use them more than a meter or so apart from another.

I add many more, but separate PSUs become a requirement rather than a consideration if amplifiers need to go that far from each other.

 

[Guddu]

I add many more, but separate PSUs become a requirement rather than a consideration if amplifiers need to go that far from each other.

I just realized that I actually have added many considerations for separate PSUs in one of previous posts

 

[Doodski]

@amirm. If I may ask will you please detail the power output linearity tests that you ran? Was it a blip of a signal etc<?> How was it run and for how long<?>

 

[TheBatsEar]

In this context (and in my opinion), creating a lower cost point of entry for features that typically cost considerably more.

Right.
They are the only company i know, that actually listens to their customers, and gives them exactly what they desire, whithin a sensible timeframe. If this is disrupting a market, i want to see more of it.

Can anyone explain the point of the MUSES02 opamp chip in the stretch rewards? If each of these uses more than one opamp there isn't much point in getting one. Unless it is one per amplifier ordered but still doesnt make a lot of sense.

Welcome to ASR
I'm not an expert, but people use them to change noise and distortion to their liking.
I'm not convinced it's something audible, but others are.
The way i see it, you need two of these MUSES02 for one mono block, so i don't get it either.

Guess I'll be waiting for the RCA optimized version then.

I'm not sure this is a real problem, the RCA result is still exceptionally good for the money. Distortion looks exactly the same and all you have to deal with is a tiny amount of additional noise. I doubt it's audible 10cm or so from the tweeter, certainly not at a meter away or so.

 

[Jefesix]

Looks very good regardless of price. If you are going to need 2 of them, Just make sure to get separate power supplies. I heard they are bundling 2 of them with just one 48 V 10 AMP power supply( instead of 5 amp)which will probably defeat the benefits of the design of this product. Question, the XLR/TRS input is it really a Balanced input? Or just for purpose of more flexibility or amount of inputs?

 

[Deleted member 72219]

Looks very good regardless of price. If you are going to need 2 of them, Just make sure to get separate power supplies. I heard they are bundling 2 of them with just one 48 V 10 AMP power supply( instead of 5 amp)which will probably defeat the benefits of the design of this product. Question, the XLR/TRS input is it really a Balanced input? Or just for purpose of more flexibility or amount of inputs?

The balanced input is the real, direct input as it is a bridged architecture amplifier. There is a rollable op-amp for the RCA single-ended input to convert it to balanced.

-Ed

 

[staticV3]

Guess I'll be waiting for the RCA optimized version then.

I just said that it is within Fosi's capabilities to produce an Amp with 100+dB SINAD via RCA in. Not that it's coming.

 

[JW001]

Is it not possible for @Fosi Audio to do an RCA optimized version with 100+ sinad?

Is RCA itself the bottleneck?

Yes. Fosi thought about it and provided a balanced input as well.

 

[Guddu]

I just said that it is within Fosi's capabilities to produce an Amp with 100+dB SINAD via RCA in. Not that it's coming.

Fosi are working towards entry level nCore based amplifiers, and I would think those might be coming sooner than later because they may not need to do much other than casing, connectors, etc. probably looking similar to their new products.
Those might get very close to SINAD on single ended input, I would hope.

PE. This one got off topic, I am afraid.

 

[Doodski]

Looks very good regardless of price. If you are going to need 2 of them, Just make sure to get separate power supplies. I heard they are bundling 2 of them with just one 48 V 10 AMP power supply( instead of 5 amp)which will probably defeat the benefits of the design of this product. Question, the XLR/TRS input is it really a Balanced input? Or just for purpose of more flexibility or amount of inputs?

A teardown of a power supply or two would be awesomeeee. @amirm. LoL... See what is going on in here under the hood. Testing of say the dual power supply and the single supply configurations<?> I wonder if they can be unscrewed into halves<?>

 

[billymac]

Right.
They are the only company i know, that actually listens to their customers, and gives them exactly what they desire, whithin a sensible timeframe. If this is disrupting a market, i want to see more of it.

I thought you were being flip on your previous reply. Maybe we share some common thinking though. Along the same lines, Eversolo seems to share some parallels and similar practices—at least listening/reacting to their customer base from what I’ve seen in a short time. Anyway, sorry to add to derail. Excited to receive my 2 ZA3’s and 2 V3M’s.

 

[raceskier]

FOSI have dropped this vid this morning.