PDA

View Full Version : Fosi Audio v3 mono power amplifiers



tubehunter
24-08-2026, 07:59
Pair of Fosi Audio v3 mono power amplifiers

A pair of Fosi Audio Class D power amplifiers. They have only been powered up to check operation of both sets of inputs (XLR & RCA)
They are both complete with the higher rated 48V power supplies and in the original box with original packaging.
I originally bought these to use to replace my valve amp but didn't bother, so they were never used.

£155 inc


Specifications

Channel: 1.0

Amplifier Chip: Texas Instruments TPA3255

Input: RCA, XLR, ¼" TRS

Output: Speaker Output (supports banana plug or bare wire connection)

SINAD: XLR: 101dB ; RCA: 93dB

SNR: ≥123dB

Dynamic Range: ≥123dB

THD: <0.006%

Gain: XLR/¼” TRS: 20dB ; RCA: 25dB, 31dB;

Terminal Impedance: 2-8Ω
Rated Power Output: 48V/5A--240W@4Ω ; 32V/5A --100W@4Ω

Frequency Response: 10Hz-30kHz(±0.06dB)

Input Voltage Range: DC 32-48V

Standard PSU: 48V/5A


https://i.ibb.co/pvGJcqwX/s-l1600-1.webp
https://i.ibb.co/2Bdgj6K/s-l1600-2.webp
https://i.ibb.co/p6b877qZ/s-l1600-3.webp
https://i.ibb.co/hJYqfGBG/s-l1600-4.webp
https://i.ibb.co/QF3nm6xM/s-l1600.webp

tubehunter
24-08-2026, 08:49
SOLD in 3 mins

Many Thanks.