Fosi Audio V3 Stereo 48V

The Fosi Audio V3 is a compact HiFi Class-D power amplifier designed to deliver exceptional audio performance in a space-saving format. Powered by the renowned Texas Instruments TPA3255 amplifier chip, it provides up to 300 watts per channel at 4 ohms, making it an ideal choice for driving passive speakers in high-quality stereo systems.

Engineered with an innovative full-body heatsink design, the V3 features ventilation on both the top and bottom of the chassis, while the internal heatsink is directly connected to the enclosure for improved thermal efficiency. This advanced cooling system allows for stable operation even during extended listening sessions.

Premium audiophile-grade components, including Sumida audio inductors, NCC filter capacitors, WIMA output capacitors, and ELNA capacitors, help deliver detailed, dynamic, and low-distortion sound reproduction. With a SINAD of 88 dB, THD of just 0.003%, and a signal-to-noise ratio exceeding 110 dB, the V3 offers impressive sonic performance.

The amplifier also supports op-amp rolling, allowing users to customize the sound signature by replacing the included NE5532 op-amps with compatible options such as SS3602, MUSES02, or OPA2134PA. A volume-controlled pre-out further increases system flexibility for use with powered speakers or subwoofers.

Features
TPA3255 Class-D Amplifier Chip
300 Watts Per Channel At 4 Ohms
Full-Body Heatsink Cooling Design
Volume-Controlled Pre-Out
Swappable Op-Amps
Supports SS3602, MUSES02 And OPA2134PA
Audiophile-Grade Components
Logarithmic Volume Control
Compact HiFi Design
Low Distortion And High Signal-To-Noise Ratio

In The Box
V3 Power Amplifier
32V/5A Or 48V/5A Power Adapter
User Manual

Specifications
Amplifier Chip: TI TPA3255
Output Power: 300 W x 2 @ 4 Ω
Speaker Impedance: 2–8 Ω
Input: RCA
Output: Speaker Output And Pre-Out
Frequency Response: 20 Hz – 20 kHz (±0.1 dB)
SINAD: 88 dB
THD: 0.003%
Signal-To-Noise Ratio: ≥110 dB
Volume Control: Logarithmic Taper A Potentiometer
DC Input Range: 24–48 V
Power Supply: 32V/5A Or 48V/5A

Dimensions & Weight
Dimensions: 16.5 × 10.4 × 3.6 cm