No sound change after switching the gain switch?

The gain switch on the V3 MONO only works with the RCA input. When using RCA mode, switching the gain setting will noticeably change the volume. (If it's already set to RCA mode, the output level from the preamp is usually sufficient.)

Would the noise still occur if no audio input cables are connected?

Try replacing the audio source, using well-shielded audio cables, and switching to a different speaker.

Doesn't work in standby mode?

Use a separate power supply and power strip for each V3 MONO to avoid ground-loop noise affecting the standby function; if the light dims but the unit doesn't automatically shut down, please try replacing high-quality RCA cables.

V3 MONO don't have volume control or knobs?

Yes. V3 MONO is a pure power amplifier, it is recommended to use it with a DAC, preamplifier, or player with volume control.

V3 MONO is a mono channel amplifier. To achieve 2 channel amplifier effect, two V3 MONO are needed to connect two speakers.

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Fosi Audio V3 Mono Power Amplifier for Home Audio Speakers, Mini Monoblock Class D Amp with TPA3255, 240W for HiFi Home Theater AVR Receiver Component, RCA/XLR Balanced Inputs 48V/5A Power

Product ID: 650459401

Details

Item dimensions L x W x H
14.5 x 10.8 x
Manufacturer
Fosi Audio
Maximum Supply Voltage
48 Volts
Minimum Supply Voltage
48 Volts (DC)
Voltage
230 Volts

⚡240W peak power @4Ω

🔊THD 0.006%, SINAD 101dB, SNR 123dB

🧊Advanced full-body heat dissipation

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Description

🎶 Elevate your sound game with Fosi Audio V3 Mono — where power meets purity.

COOL UNDER PRESSURE - Innovative full-body heat dissipation and dual side vents keep your amp running flawlessly during marathon listening sessions.
POWERHOUSE PRECISION - Unleash 240W of crystal-clear Class D power to drive your high-end speakers with zero distortion.
FLEXIBLE CONNECTIVITY - Seamlessly switch between balanced XLR/TRS and RCA inputs with gain control for ultimate system compatibility.
CUSTOM SOUND SIGNATURE - Swap out stock op-amps with your favorite DIP8 dual discrete options to tailor your audio experience like a pro.
AUDIOPHILE GRADE COMPONENTS - Premium Nichicon, ELNA, WIMA capacitors and Sumida inductors deliver pristine sound fidelity and ultra-low noise.

The Fosi Audio V3 Mono is a compact, high-performance Class D power amplifier delivering up to 240W at 4Ω, featuring cutting-edge PFFB technology for ultra-low distortion and enhanced frequency response. Equipped with premium Japanese and German components, advanced cooling design, and versatile input options (XLR, TRS, RCA), it’s engineered for audiophiles seeking a customizable, distortion-free home audio or theater experience.

Specifications

ASIN	B0D31M3DXY
Best Sellers Rank	#44,958 in Electronics ( See Top 100 in Electronics ) #43 in Hi-Fi Amplifiers
Brand Name	Fosi Audio
Customer Reviews	4.2 4.2 out of 5 stars (325)
Importer Contact Information	[email protected]
Item Dimensions	14.5 x 10.8 x 4 Centimeters
Item Type Name	amplifier
Item Weight	750 Grams
Manufacturer	Fosi Audio
Maximum Output Power	240 watts
Maximum Supply Voltage	48 Volts
Minimum Supply Voltage	48 Volts (DC)
Model Number	V3 Mono
Mounting Type	Freestanding
Number of Channels	1
Number of Items	5
Packer Contact Information	[email protected]
Part Number	un pezzo
Specification Met	CE
Voltage	230 Volts

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55643 som

Duties & taxes included

In stock

Sold byAmazon KyrgyzstanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Kyrgyzstan.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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