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 130 reviews
83%
(108)
14%
(18)
3%
(4)
0%
(0)
0%
(0)
E
Eric Rystedt
Awsome

What great dound and power. Thank you fosi. Cant wait to get my luna turn table.service is outstanding.

t
threej
Superb Class D

I have two pairs of V3 Monobolocks. One powers A/D/S/ M15 tower speakers, using two 48v 10A power supplies and two Fosi filters.

Another, using a single 48V 10A power supply and filter, feeds exceptional bookshelf speakers* I built.

The first monoblocks obtain their signal from a ZP3 preamp and ZD3 DAC (optical out from a Squeezebox Duet) or an X5 Phono preamp (Denon DP72L turntable with a Shure M97xE cartridge).

The second are fed by a P4 preamp and Q6 DAC (optical out from an Apple Airport Express).

Both setups have considerably surprised me, especially since the first replaced a venerable, renowned set of Tandberg 3002A pre- and 3006A power amps.

I have placed a pair of 120mm pancake fans under each pair of monoblocks and set their speed to medium, which is near silent and effectively cools the amps.

It delights me that wonderful sound can be had from my assortment of Fosi equipment.

*(6.5" Tonegen woofers, 1" fabric dome Tonegen tweeters in a ¾" MDF acoustic suspension enclosure containing high-quality crossover components, cabinets covered in oiled walnut veneer --constructed according to a late 1990s design in two Audio Magazine articles by Ken Kantor, speaker designer at Acoustic Research and founder/speaker designer of NHT).

J
Juan Camilo Hernandez Figueroa
Good but hot

They sound pretty good but is really hot, would like to see a V4 mono more heavy, big and better heat disipation.

M
Martin Bonadio
Impressed

Really impressed with the performance of my v3 mono blocks. Moved from a large underpowered integrated amp to Fosi class D mini components and wasn’t sure what to think. But these two little amps really drive my hard to power speakers!

J
Jean-Philippe
Sounds good to me

Excellent built. Great feature and sound really good on my DIY Toid Epics. With the 10 amps power supplies for each, it's perfect. Great product. Thank you Fosi's team.

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