Engineered for Audiophiles - Optimal Choice for Home Audio Systems

In 2023, following the launch of the V3 stereo amplifier, we received numerous valuable suggestions and feedback from our global audio lovers. We listen intently, record diligently, and develop with dedication, ultimately striving to transform your suggestions and ideas into reality—the V3 mono.

  • Input: RCA, XLR, ¼" TRS; Output: Passive Speaker (supports banana plug or bare wire connection)
  • SINAD: XLR--101dB; RCA--93dB; SNR: ≥123dB
  • Rated Power Output: 48V/5A 240W@4Ω; 32V/5A 100W@4Ω

NICHICON Caps, Japanese

Ensure superior sound clarity, longevity, and stable electrical performance, enhancing the fidelity of audio reproduction.

WIMA Caps, German

Provide exceptional sound quality and signal stability, greatly enhancing the audio experience.

Sumida Inductor, Japanese

Offers superior signal purity and noise reduction, elevating the amplifier's sound performance.

ELNA Caps, Japan

Ensure enhanced audio clarity and stability, contributing to a richer sound experience.

Product details

Which Product is right for you?

Compare products to find the best one for your needs.

Fosi Audio V3 Mono Power Amplifier for Home Audio Speakers, Mini Monoblock Class D Amp - Fosi Audio
From $109.99

Fosi Audio V3 Mono Monoblock Power Amplifier

Type
Monoblock
Amp Chip
TPA3255
MAX Power Output
300W@4Ω
Input
RCA, XLR, ¼”TRS
Output
Speaker Output
Treble & Bass Control
No
THD+N
<0.006%
SNR
≥123dB
Terminating Impedance
2-8Ω
Power Supply
32V/5A, 48V/5A
Fosi Audio ZA3 Balanced Stereo Amplifier Home Audio - Fosi Audio
From $109.99

Fosi Audio ZA3 Balanced Stereo Amplifier

Type
2.0 CH Amp
Amp Chip
TPA3255
MAX Power Output
2x 300W@4Ω
Input
RCA, XLR, ¼”TRS
Output
Speaker Output, Sub-Out
Treble & Bass Control
No
THD+N
<0.006%
SNR
≥106dB
Terminating Impedance
2-8Ω
Power Supply
32V/5A, 48V/5A
Fosi Audio V3 300W x2 2.0 Channel Hi - Fi Stereo Audio Amplifier with TPA3255 Chip - Fosi Audio
From $69.99

Fosi Audio V3 Mini Stereo Amplifier

Type
2.0 CH Amp
Amp Chip
TPA3255
MAX Power Output
2x 300W@4Ω
Input
RCA
Output
Passive Speakers, Pre-Out
Treble & Bass Control
No
THD+N
<0.003%
SNR
≥110dB
Terminating Impedance
2-8Ω
Power Supply
32V/5A, 48V/5A
Fosi Audio BT20A PRO 300W x2 TPA3255 2 Channel Bluetooth 5.0 Power Amplifier - Fosi Audio
From $79.99

Fosi Audio BT20A Pro Bluetooth Stereo Power Amp

Type
Bluetooth 2.0 Ch Amp
Amp Chip
TPA3255
MAX Power Output
2x 300W@4Ω
Input
Bluetooth, RCA
Output
Speaker Output, Pre-Out
Treble & Bass Control
Yes
THD+N
≤ 0.005%
SNR
≥ 108dB
Terminating Impedance
2-8Ω
Power Supply
32V/5A, 48V/5A
Fosi Audio M03 Subwoofer Amplifier
From $89.99

Fosi Audio M03 Subwoofer Mono Amplifier

Type
Subwoofer Amp/MoxAmp
Amp Chip
MAX Power Output
200W
Input
RCA
Output
Passive Speakers + Active/Passive Subwoofer
Treble & Bass Control
No
THD+N
≤0.03%
SNR
≥ 106dB
Terminating Impedance
4-8Ω
Power Supply
32V/5A

FAQs

Please read our FAQs page to find out more.

Customer Reviews

Based on 123 reviews
83%
(102)
14%
(17)
3%
(4)
0%
(0)
0%
(0)
L
Leonidas K.
Fosi Audio V3 Mono Monoblock Power Amp

I bought two of these amps a couple of months ago, to use with a Rega planar 3 turntable as a main source.
The connection is via an X5 phone preamp and the ZP3 preamp.
Previously the turntable was connected to an all in one old Marantz amp, via the X5.
Compared to the previous setup, with the ZP3 & V3s the audio is significantly improved. There is much more clarity, a wider sound stage and better distinction between the instruments.
My current speakers are easy to drive, so it was very easy load for the V3s, and the volume could easily be set much higher that what was enough for the space the system is in.
As many other people have said, the amps get quite hot, and though I could put mu hand on them, I definitely would not want to keep it on for a long time. I do not know if it will be a problem in the long run, but so far it does not seem to have affected the performance of the amps at all.
I tried connecting to the preamp via RCA and XLR, I cannon say that I noticed a significant difference, but I did not have any noise/interference issues with the RCAs to begin with.

J
Jess Uhl

Fosi Audio V3 Mono Monoblock Power Amplifier

ל
ליאור כהן
Sickk

Sickk

P
Philip Baarendse
Perfect mono amp for a desktop speaker

The Fosi V3 Mono amplifier is perfect for my use case, of powering a desktop speaker. I like the small size, minimalist switches, and auto-standby mode.

M
Mark Schrumpf
Excellent replacement for active JBL subwoofer amplifier

Works well and standby function is nice. I only miss not being able to regulate subwoofer level more strongly