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Fosi Audio V3 Amplifier Review

Rate this amplifier:

  • 1. Poor (headless panther)

    Votes: 11 2.5%
  • 2. Not terrible (postman panther)

    Votes: 37 8.4%
  • 3. Fine (happy panther)

    Votes: 215 49.1%
  • 4. Great (golfing panther)

    Votes: 175 40.0%

  • Total voters
    438

totti1965

Active Member
Joined
Apr 7, 2023
Messages
241
Likes
194
Location
Bonn / Germany
Sorry if it sounds like a stupid question lol. The reason I ask is I don't quite understand everything about how the power supplies affect the sound. I just want good quality sound without distortion. Will the 32V give me good clear sound as long as I keep it low volume?
Hey,
For nearfield stereo you would play very very Loud - even with 1 Watt: Sensitivity is 79.4 dB / Watt an 1 meter. So in stereomode with 2 x 1 Watt you will reach 85.4 dB. This is VERY loud!
With the 34 Watts per channel at 8 Ohm, which the Fosi V3 -32Volt is able to serve, You will get even 15 dB more: each speaker would get 94.4 dB In Stereo a total of 100.4 dB. The Problem is: You will not reach more than 86 clean dB with one of these tiny speakers.
So the 32 V Device is far more than enough!
By the way: The Dayton is fantastic with a little bit of equalizing

Spinorama.org shows us exactly, how to do this (a bit more accurate than the "quick and dirty" Equalizer suggestions of @amirm :
Dayton Audio MK402X
AutomaticEQ (IIR)

Set preamp gain to: -2.9dB.
TypeFreqQGain
LS891.282.93
PK1171.75-1.63
PK1871.85-1.44
PK3912.942.21
PK4781.78-1.85
PK7142.371.85
PK17622.31.6
PK64891.05-2.38
PK126620.82-2.18
Details Download




All in all:
Q: At which level of power -roughly speaking- will the Dayton MK402X became ugly?
Answer: It doesn´t love more than 4 Watts.
Q: Is this loud?
A: Yes, Veeeeeeery loud: In stereo more than 100 dB an 1 Meter.
Q: Are there other speakers, which can play louder?
Answer: Most of the other speakers can play even louder!
Q: Is the dayton MK402X a good speaker?
A: With some equalization it is a very very good speaker for the money!
Q: Which app should I use for my windows computer for equalization?
A: Equalizer APO
Q: Which app should I use for my android?
A: Poweramp!
Q: Which app should I use for my apple Computer?
A: Go f...ck yourself! ;)

What Crinacle tells us for IEM is true also for speakers:
look the youtube video from 1:23 min on!

thw
 

Guddu

Addicted to Fun and Learning
Joined
Feb 10, 2020
Messages
857
Likes
734
The quality / value you can achieve right now is just amazing. $88! Gotta keep the right perspective! I spent more than that on the power supply. :)
On a lighter note:
Many times things seem to be good or even better until you put it against another competent product.
And then to avoid arguments and reasoning, we all agree to disagree.
I have a v3 unit that died with issues caused by power on/off deployment within 3 months.
 

SMen

Active Member
Joined
Jan 2, 2022
Messages
142
Likes
60
On a lighter note:
Many times things seem to be good or even better until you put it against another competent product.
And then to avoid arguments and reasoning, we all agree to disagree.
I have a v3 unit that died with issues caused by power on/off deployment within 3 months.
There goes the value / quality argument (your v3 unit)! :facepalm:. Sorry to hear.

So far, and I do not want to tempt fate, I have been lucky with trying out things like the Aiyima A07 and a balanced BRZHifi 3255. But I am going to try the DIY route with a Sylph or 3e Audio ... and then, I hope 'happily' end my TI3255 / 3251 journey! I've been treating these things as disposable, if only to learn more. Warranties and quality control do matter...
 

Talisman

Addicted to Fun and Learning
Forum Donor
Joined
Mar 27, 2022
Messages
956
Likes
2,795
Location
Milano Italy
On a lighter note:
Many times things seem to be good or even better until you put it against another competent product.
And then to avoid arguments and reasoning, we all agree to disagree.
I have a v3 unit that died with issues caused by power on/off deployment within 3 months.
You are always very enterprising, positive and active in the threads of Aiyima products, which you do not fail to "advertise" and praise, equally in the Fosi thread you do not skimp on criticisms and alleged problems.
I'll be honest, I've been wondering for a while if there's an agenda behind your account
 

Guddu

Addicted to Fun and Learning
Joined
Feb 10, 2020
Messages
857
Likes
734
You are always very enterprising, positive and active in the threads of Aiyima products, which you do not fail to "advertise" and praise, equally in the Fosi thread you do not skimp on criticisms and alleged problems.
I'll be honest, I've been wondering for a while if there's an agenda behind your account
I'm afraid you felt that way.
 

Slimer

Member
Joined
Mar 17, 2023
Messages
7
Likes
2
Hey,
For nearfield stereo you would play very very Loud - even with 1 Watt: Sensitivity is 79.4 dB / Watt an 1 meter. So in stereomode with 2 x 1 Watt you will reach 85.4 dB. This is VERY loud!
With the 34 Watts per channel at 8 Ohm, which the Fosi V3 -32Volt is able to serve, You will get even 15 dB more: each speaker would get 94.4 dB In Stereo a total of 100.4 dB. The Problem is: You will not reach more than 86 clean dB with one of these tiny speakers.
So the 32 V Device is far more than enough!
By the way: The Dayton is fantastic with a little bit of equalizing

Spinorama.org shows us exactly, how to do this (a bit more accurate than the "quick and dirty" Equalizer suggestions of @amirm :
Dayton Audio MK402X
AutomaticEQ (IIR)

TypeFreqQGain
Set preamp gain to: -2.9dB.
LS891.282.93
PK1171.75-1.63
PK1871.85-1.44
PK3912.942.21
PK4781.78-1.85
PK7142.371.85
PK17622.31.6
PK64891.05-2.38
PK126620.82-2.18
Details Download




All in all:
Q: At which level of power -roughly speaking- will the Dayton MK402X became ugly?
Answer: It doesn´t love more than 4 Watts.
Q: Is this loud?
A: Yes, Veeeeeeery loud: In stereo more than 100 dB an 1 Meter.
Q: Are there other speakers, which can play louder?
Answer: Most of the other speakers can play even louder!
Q: Is the dayton MK402X a good speaker?
A: With some equalization it is a very very good speaker for the money!
Q: Which app should I use for my windows computer for equalization?
A: Equalizer APO
Q: Which app should I use for my android?
A: Poweramp!
Q: Which app should I use for my apple Computer?
A: Go f...ck yourself! ;)

What Crinacle tells us for IEM is true also for speakers:
look the youtube video from 1:23 min on!

thw
Thanks that was very helpful. Will have to mess around with them a bit and try all this.
 

RCL162

Member
Joined
Jan 24, 2024
Messages
33
Likes
15
Location
Shangri-La
You guys must be happy...
FB_IMG_1710376931087.jpg
 
Last edited:

timiambeing

Member
Joined
Aug 18, 2020
Messages
51
Likes
29
You misunderstood the meaning, the hype is mine, I've been waiting for this project for a long time, I'm extremely curious to see it and then to see Amir's review
Ah, I’m sorry! Me too! (well not Amir’s review so much, but certainly the comments of actual users and how they like it in their system - not that we must encourage such subjective comparisons of course!! [here I would put a sarcastic smiley, but I can‘t find any on the iPad version so I have to make up text ones :-#]
 

RCL162

Member
Joined
Jan 24, 2024
Messages
33
Likes
15
Location
Shangri-La
why? if Fosi maintains the budget, 2 monos with high performance at a budget price is a dream :)
Yeap..2 mono for price of ZA3, good price. Will get the 2 V3 mono instead.

Yeah its good..the ZA3 for $150. v3 is$86. Yeap better idea. Haha!
 
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