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 117 reviews
82%
(96)
15%
(17)
3%
(4)
0%
(0)
0%
(0)
K
Keith
Problem solved.

I bought a pair from kickstart to replace the onboard ncore amplification in my NAD M10. There is no doubt they sound better and I saved heaps by not going with another brand as I had intended before hearing about these.

J
Jon Kidd
New V3 amps mean I don't need new speakers!

I received the V3 monoblock amps earlier today, and have spent the last hour playing some Beethoven 7th, Rush Hemispheres, Dixieland Jazz, Wide Mouth Mason blues. They have revived my old Morrison speakers, which never delivered decent bass until the V3's were hooked up. Nice stereo imaging, too!

M
Michał Bednarek
True brutal power!

I'm very pleased of purchase of these monoblocks. They deliver enough power to my Quadral Titans V5. Sound is pure and perfect.
There is only one disadvantage which is heat. They get pretty warm even at low volume.

j
jeff julian
Class D Mono blocks with individual 48v 10amp max. power supplys.

For the price you cannot go wrong especially if you have a good pre amp that compliments them. Deep spacious and wide sound stage. I couldn't believe the bass you get.

J
James Chychota
Impressive Sound — Incredible Value in a Small Package”

The Fosi V3 Mono amps are genuinely impressive. I’ve paired them with my 4-ohm DIY Scan-Speak MTM speakers, and they deliver clean, detailed sound with excellent control and zero background noise. Imaging is tight, and dynamics are punchy — these little amps can really drive.

They’re running off two separate 48V/5A power supplies with USB-powered cooling fans. Even under heavy use, they stay cool and stable. Compared directly with my ICEpower and large Class AB amps, the V3 Monos hold their own — and for a fraction of the size and cost.

Only minor complaint: the LED ring brightness is inconsistent between the two amps. One is noticeably brighter than the other. It doesn’t affect performance at all, but it’s a cosmetic mismatch worth noting for perfectionists.

Overall, though, I’m thrilled with the sound and value. These are keepers.