Fosi Audio V3 Stereo Amplifier Home Audio 300 Watts x2 Power TPA3255 Class D Mini Speaker Amp 2 Channel Audio Component for Passive Bookshelf Tower Speakers Desktop Home Theater with 48V Power Supply

Price: $109.99
(as of May 23, 2026 10:21:12 UTC – Details)

Product description

Designed with Audiophiles in Mind Fosi Audio V3 Mini Stereo Power Amplifier

Integrated quality components and groundbreaking heat dissipation design enable high and stable performance catering to audiophiles’ demand.

The video showcases the product in use.The video guides you through product setup.The video compares multiple products.The video shows the product being unpacked.

Born for HiFi Enthusiasts

Using a minimalist design language, focusing more on enhancing the sound quality and performance of the product, making it the best-sounding power amplifier of Fosi Audio to date.

Max Power Output: 300Wx2@4ΩSINAD: 88dB | SNR: ≥110dBTHD: ≤0.003% | Noise Floor: 140uVFrequency Response: 20Hz-20kHz

TI TPA3255 Integrated

Enabling superior audio quality & ultra-low distortion across the audio band with Class-D efficiency

Swappable Op-Amps

Compatible with 8-pin dual op-amps. Roll them to get your preferred sound signature

Audiophile-Grade Capacitors

Built-in quality Japanese NCC, ELNA, and German WIMA capacitors for outstanding performance

Japanese SUMIDA Inductors

Professional audio inductors which have lower impedance and enables support for larger currents

Logarithmic Potentiometer

Manage the volume of sound in a much finer way suitable for the human ear

1 Amp Chip

2 Op-Amps

3 Capacitors

4 Inductors

5 Taper A Pot

Groundbreaking Heat Dissipation

Vents on the top and bottom, and whole-body heatsink design enhance air circulation and cooling

1 Heat Dissipation

2 Vents On Top

3 Vents On Bottom

4 Nano-Coated Heatsink

The “Pre-out” level is NOT controlled by the volume control.

1 Front Panel

2 About the “Pre-out”

3 Power Rating

1 Bookshelf Scene

2 Home Theater

3 Desktop Scene

V3

Comparison Chart

2.0 CH Amp

Type

Headphone Am/Preamp

300W x 2

MAX Power Output

2400mW@32Ω-High Gain

RCA

Input

3.5mm line in

Passive SPK +Pre-out

Output

line& headphone jack

Treble& Bass Control

<0.003%

THD

<0.001%

≥110dB

SNR

≥108dB

2.0 CH Amp

Type

2.0 CH Amp

300W x 2

MAX Power Output

300W x 2

RCA

Input

RCA

Passive SPK +Pre-out

Output

Passive Speakers

Treble& Bass Control

<0.003%

THD

≤ 0.3%

≥110dB

SNR

≥ 90dB

2.0 CH Amp

Type

Headphone Amp+Preamp

300W x 2

MAX Power Output

–

RCA

Input

Bluetooth + RCA

Passive SPK +Pre-out

Output

RCA+Headphone+AUX

Treble& Bass Control

<0.003%

THD

≤ 0.02%

≥110dB

SNR

≥103dB

2.0 CH Amp

Type

48V5A Power Supply

300W x 2

MAX Power Output

240W

RCA

Input

–

Passive SPK +Pre-out

Output

–

Treble& Bass Control

<0.003%

THD

–

≥110dB

SNR

–

SK01

TB10D

P3

48V5A

Compact Yet Powerful: The V3 mini power amplifier combines a minimalist design with exceptional performance. With a power output of up to 600W, it can effortlessly drive 2-8Ω speakers, delivering impressive sound quality. Its compact size makes it suitable for various applications, from bookshelves and desktop setups to home theaters
Audiophile-Grade Components: It features the TPA3255 high-end digital class D amp chip and utilizes premium Japanese NCC, ELNA, and German WIMA capacitors, and Japanese Sumida inductors for exceptional audio quality. With a SINAD rating of up to 88dB, an SNR of up to 110dB, and a low noise floor of only 140uV, it delivers exceptional clarity and low distortion
Innovative Cooling: The V3 stands out with its groundbreaking heat dissipation design. Equipped with vents on the casing’s top and bottom, and a whole-body heatsink design, it efficiently dissipates heat, preventing damage to components and ensuring optimal performance
Scalable and Fun: Tailor your sound experience by swapping the stock NE5532 op-amps. V3 is compatible with a variety of 8-pin dual op-amps like Sparkos SS3602, MUSES02, OPA2604, OPA2134PA, OP249, AD827, RM4559, LM4562, LME49720HA, etc
Enhanced Pre-out Functionality: The V3 features an optimized “Pre-out” design. The level is now controlled by the volume control, allowing for adjustable sound levels when connected to the “Pre-out.” This enhancement offers greater flexibility and convenience for users who prefer to fine-tune their audio experience