---
product_id: 643218284
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: "R6984"
currency: ZAR
in_stock: true
reviews_count: 6
url: https://www.desertcart.co.za/products/643218284-v3-mono-power-amplifier-for-home-audio-speakers-mini-monoblock
store_origin: ZA
region: South Africa
---

# 240W peak power output THD as low as 0.006% for pristine sound Advanced full-body heat dissipation 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:** R6984
**Availability:** ✅ In Stock

## Summary

> 🎶 Unleash Pure Power & Precision — Your Home Theater’s Secret Weapon

## 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?** R6984 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.za](https://www.desertcart.co.za/products/643218284-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:** Innovative chassis-integrated cooling with dual side vents keeps your amp running stable during marathon listening sessions.
- • **Powerhouse Precision:** Delivering a robust 240W @4Ω, the V3 Mono fuels your high-power speakers with crystal-clear authority.
- • **Flexible Pro Connectivity:** Supports balanced XLR/TRS and RCA inputs with gain toggle and customizable op-amps for a tailored sonic signature.
- • **Revolutionary Sound Clarity:** PFFB tech eliminates load dependency, ensuring consistent, distortion-free audio that elevates every note.
- • **Audiophile-Grade Engineering:** Equipped with the elite TPA3255 chip and premium Japanese & German components for ultra-low distortion and supreme fidelity.

## Overview

The Fosi Audio V3 Mono is a compact, high-performance Class D power amplifier delivering 240W at 4Ω, designed for audiophiles and home theater enthusiasts. Featuring cutting-edge PFFB technology and premium components like the TPA3255 chip, it offers ultra-low distortion (THD 0.006%) and high signal clarity (SINAD 101dB). Its advanced full-body heat dissipation and dual ventilation ensure stable, long-term operation. With versatile RCA and balanced XLR/TRS inputs plus customizable op-amps, it seamlessly integrates into multi-channel AVR setups, elevating your audio experience with professional-grade sound quality.

## Description

Buy 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 online on desertcart.ae at best prices. ✓ Fast and free shipping ✓ free returns ✓ cash on delivery available on eligible purchase.

Review: Awesome - This thing rocks. Hear the finest audiophile quality.
Review: Amazing Amp - The four channels of the TPA3255 amp chip are all utilized in a parallel arrangement in this amp. This means the dampening factor on your speakers is x2. If you have a 6ohm speaker this amp sees it as a 12ohm load. Add to this great topology the feedback filter placed at the output stage (PFFB) and you’ve got two unique features above and beyond most class D amps in this price range or higher. It makes for a great sounding powerful amp that can drive just about anything. These can get hot so I immediately replaced the pitiful squirt of thermal compound with Thermal Grizzly Duronaut (which basically performs extremely high without drying out). I then removed the rubber feet from the bottom and strapped on a 150mm aluminum heatsink with a thermal pad between. I then use the amps upside down so the heat goes straight out the top heatsink. Normally it spreads through the bottom and around the enclosure creating a cute little oven for your components. Roll op amps to improve sound, use at least a 48V 5A power supply and Bob’s your uncle !

## Features

- Mini Monoblock Amplifier: Crafted for HiFi audiophiles, the V3 Mono 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 V3 Mono 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 V3 Mono 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.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0D31M3DXY |
| Best Sellers Rank | #10,881 in Electronics ( See Top 100 in Electronics ) #24 in Home Audio Amplifiers |
| Brand Name | Fosi Audio |
| Country Of Origin | China |
| Customer Reviews | 4.2 4.2 out of 5 stars (308) |
| Included Components | Quick Start Guide |
| Item Dimensions | 14.5 x 10.8 x 4 centimeters |
| Item Weight | 750 Grams |
| Manufacturer | Fosiaudio |
| Material Type | Metal |
| Maximum Output Power | 240 watts |
| Maximum Supply Voltage | 48 Volts (DC) |
| Minimum Supply Voltage | 48 Volts (DC) |
| Model | V3 Mono |
| Mounting Type | Freestanding |
| Number of Channels | 1 |
| Number of Items | 1 |
| Output Power | 240 Watts |
| Part Number | un pezzo |
| Specification Met | CE |
| Supply Current | 1.04 Amps |
| Voltage | 230 Volts |
| Warranty Description | 2 years |

## Product Details

- **Item dimensions L x W x H:** 14.5 x 10.8 x 4 centimeters
- **Manufacturer:** Fosiaudio
- **Maximum supply voltage:** 48 Volts (DC)
- **Minimum supply voltage:** 48 Volts (DC)
- **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.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Awesome
*by J***D on 6 January 2026*

This thing rocks. Hear the finest audiophile quality.

### ⭐⭐⭐⭐⭐ Amazing Amp
*by S***N on 13 July 2026*

The four channels of the TPA3255 amp chip are all utilized in a parallel arrangement in this amp. This means the dampening factor on your speakers is x2. If you have a 6ohm speaker this amp sees it as a 12ohm load. Add to this great topology the feedback filter placed at the output stage (PFFB) and you’ve got two unique features above and beyond most class D amps in this price range or higher. It makes for a great sounding powerful amp that can drive just about anything. These can get hot so I immediately replaced the pitiful squirt of thermal compound with Thermal Grizzly Duronaut (which basically performs extremely high without drying out). I then removed the rubber feet from the bottom and strapped on a 150mm aluminum heatsink with a thermal pad between. I then use the amps upside down so the heat goes straight out the top heatsink. Normally it spreads through the bottom and around the enclosure creating a cute little oven for your components. Roll op amps to improve sound, use at least a 48V 5A power supply and Bob’s your uncle !

### ⭐⭐⭐⭐⭐ Ces amplis sont magiques
*by C***Y on 24 November 2025*

Incroyables ampli pour un tarif hallucinant. Équipé en 7.2.2 dans une salle dédiée hifi et home cinéma, j'ai acheté 3 amplis pour alimenter mes 3 avants Dali Rubicon. Je redécouvre la musique et les films. Plus d'impacts, plus de précision, plus de clarté, plus d'immersion. Plus, plus, plus. Ça a un impact sur l'ensemble du système. J'avais acheté l'an passé un ampli de puissance à 1400€ et 3 canaux déçu de l'amélioration. Avec ces amplis c'est le jour et la nuit Ils chauffent un peu mais sans plus dans un meuble ouvert. Je n'en reviens toujours pas du gain qualitatif. Je conseille à tous mes amis d'investir au moins pour la stéréo. Un seul inconvénient trop de fils à rajouter ( 6 rca, 3 cordons d'alimentation). Ce n' est pas négligeable mais pas rédhibitoire. Merci Fosi.

## Frequently Bought Together

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*Product available on Desertcart South Africa*
*Store origin: ZA*
*Last updated: 2026-10-02*