---
product_id: 641505874
title: "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"
brand: "fosi audio"
price: "€ 308.27"
currency: EUR
in_stock: true
category: "Fosi Audio"
url: https://www.desertcart.sk/products/641505874-v3-mono-power-amplifier-for-home-audio-speakers-mini-monoblock
store_origin: SK
region: Slovakia
---

# 240W peak power output PFFB tech for ultra-low distortion Full-body heat dissipation design 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

**Brand:** fosi audio
**Price:** € 308.27
**Availability:** ✅ In Stock

## Summary

> 🎧 Elevate your home audio game — power, precision, and pristine sound in one sleek amp!

## Quick Answers

- **What is this?** 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 by fosi audio
- **How much does it cost?** € 308.27 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sk](https://www.desertcart.sk/products/641505874-v3-mono-power-amplifier-for-home-audio-speakers-mini-monoblock)

## Best For

- fosi audio enthusiasts

## Why This Product

- Trusted fosi audio brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Cool Under Pressure:** Advanced full-body heat dissipation and dual side vents keep your amp running stable during marathon listening sessions.
- • **Premium Componentry:** Built with TPA3255 chip plus Japanese Nichicon & ELNA capacitors and German WIMA for pristine audio purity.
- • **Powerhouse Precision:** Delivers a robust 240W @4Ω to drive your high-end speakers with crystal-clear authority.
- • **Next-Gen Sound Clarity:** Innovative PFFB feedback tech crushes distortion and elevates frequency response for audiophile-grade fidelity.
- • **Flexible Connectivity & Customization:** Supports balanced XLR/TRS and RCA inputs with gain toggle, plus swappable op-amps for your signature sound.

## Overview

The Fosi Audio V3 Mono Power Amplifier is a compact Class D monoblock delivering 240W at 4Ω, engineered with cutting-edge PFFB technology to minimize distortion and maximize sound fidelity. Featuring premium components like the TPA3255 chip and high-grade capacitors, it ensures audiophile-level performance. Its innovative full-body heat dissipation design and dual ventilation maintain stable output during extended use. With versatile RCA and balanced XLR/TRS inputs plus customizable op-amps, it’s the perfect powerhouse for building or upgrading your HiFi home theater or multi-channel audio system.

## Description

desertcart.com: 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 : Electronics

## Features

- Mini Monoblock Amplifier: Crafted for HiFi audiophiles, the amplifier home audio allows you to drive a single passive speaker with one amp, delivering up to 240W @4Ω of rated power. It offers the flexibility to build your home audio 2/3/4/5-channel system effortlessly. The V3 Mono can serve as a power amplifier for multi-channel AVRs, complementing the output power to easily drive high-power speakers in home theater systems.
- Innovative Cutting-Edge Technology: Fosi Audio has achieved a technological breakthrough through independent research and development by applying PFFB (Post-Filter Feedback) technology to the V3 Mono for the first time. This effectively overcomes the common load dependency issues of Class-D amplifiers, improving distortion and enhancing frequency response, thereby significantly enhancing sound quality and performance.
- Audiophile-Grade Components: The audio component amplifiers incorporates the high-end TPA3255 Class-D amp chip, paired with well-known components such as Japanese Nichicon filter capacitors, ELNA capacitors, German WIMA capacitors, and Japanese Sumida inductors, etc. Additionally, it features an upgraded four-layer PCB. This combination not only ensures high power output but also achieves a THD as low as 0.006%, a SINAD of 101dB, and an SNR of 123dB. As a result, the fidelity and quality of the audio are assured.
- Advanced Cooling: Utilizing Fosi Audio's pioneering full-body heat dissipation design, the TPA3255 amplifier chip is placed at the bottom and tightly integrated with the chassis, allowing heat to be effectively dissipated through the casing. Coupled with dual side ventilation holes that enhance internal airflow, this ensures the stereo amplifier can deliver stable, high-power output over extended periods.
- User-Friendly Design: Supports both XLR/¼" TRS balanced and RCA single-ended(with gain selection) inputs, with an easy toggle switch for selection. Additionally, it features an auto power/signal sensing mode to enhance energy efficiency. You can also customize your preferred sound signature by replacing the stock NE5532 op-amps, supporting DIP8 dual discrete op-amps. For example, it will work with Sparkos SS3602, MUSES02, OPA2604, Burson V5i, V6, V7, and more. Note: Please ensure that the device is powered off when connecting the speaker cable.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0D31M3DXY |
| Best Sellers Rank | #26,116 in Electronics ( See Top 100 in Electronics ) #119 in Audio Component Amplifiers |
| Brand Name | Fosi Audio |
| Customer Reviews | 4.2 4.2 out of 5 stars (331) |
| Included Components | Fosi Audio V3 MONO Power Amplifier; 48V/5A Power Supply Unit; User Manual |
| Item Dimensions | 5.71 x 4.24 x 1.57 inches |
| Item Weight | 750 g |
| Manufacturer | Fosi Audio |
| Material Type | [metal] |
| Maximum Output Power | 240 watts |
| Maximum Supply Voltage | 48 volts_of_direct_current |
| Minimum Supply Voltage | 48 volts_of_direct_current |
| Model | V3 Mono |
| Mounting Type | Surface Mount |
| Number of Channels | 1 |
| Number of Items | 1 |
| Output Power | 240 watts |
| Part Number | un pezzo |
| Specification Met | CE |
| Supply Current | 1.04 A |
| Voltage | 230 volts |
| Warranty Description | 24-month manufacturer |

## Product Details

- **Item dimensions L x W x H:** 5.71 x 4.24 x 1.57 inches
- **Manufacturer:** Fosi Audio
- **Maximum Supply Voltage:** 48 volts_of_direct_current
- **Minimum Supply Voltage:** 48 volts_of_direct_current
- **Voltage:** 230 volts

## Images

![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 - Image 1](https://m.media-amazon.com/images/I/51x7N0QpPSL.jpg)

## Questions & Answers

**Q: No sound change after switching the gain switch?**
A: 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.)

**Q: Would the noise still occur if no audio input cables are connected?**
A: Try replacing the audio source, using well-shielded audio cables, and switching to a different speaker.

**Q: Doesn't work in standby mode?**
A: 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.

**Q: V3 MONO don't have volume control or knobs?**
A: Yes. V3 MONO is a pure power amplifier, it is recommended to use it with a DAC, preamplifier, or player with volume control.

**Q: What's the V3 MONO?**
A: V3 MONO is a mono channel amplifier. To achieve 2 channel amplifier effect, two V3 MONO are needed to connect two speakers.

## Frequently Bought Together

- 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
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*Product available on Desertcart Slovakia*
*Store origin: SK*
*Last updated: 2026-09-03*