---
product_id: 560407547
title: "Fosi Audio V3 300W Class D Stereo Power Amplifier, TPA3255 Chip HiFi Audio Amplifier for Home Theater and Bookshelf Speakers, Compact Design with Advanced Heat Dissipation with 48V5A Power Supply"
brand: "fosi audio"
price: "₩568635"
currency: KRW
in_stock: true
reviews_count: 10
category: "Fosi Audio"
url: https://www.desertcart.kr/products/560407547-fosi-audio-v3-300w-class-d-stereo-power-amplifier-tpa3255
store_origin: KR
region: South Korea
---

# 48V 5A power supply included 300W max power output Advanced heat dissipation tech Fosi Audio V3 300W Class D Stereo Power Amplifier, TPA3255 Chip HiFi Audio Amplifier for Home Theater and Bookshelf Speakers, Compact Design with Advanced Heat Dissipation with 48V5A Power Supply

**Brand:** fosi audio
**Price:** ₩568635
**Availability:** ✅ In Stock

## Summary

> 🎶 Elevate your sound game with power and precision in a palm-sized package!

## Quick Answers

- **What is this?** Fosi Audio V3 300W Class D Stereo Power Amplifier, TPA3255 Chip HiFi Audio Amplifier for Home Theater and Bookshelf Speakers, Compact Design with Advanced Heat Dissipation with 48V5A Power Supply by fosi audio
- **How much does it cost?** ₩568635 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.kr](https://www.desertcart.kr/products/560407547-fosi-audio-v3-300w-class-d-stereo-power-amplifier-tpa3255)

## 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

- • **Customizable Sound:** Supports upgradeable op-amps like Sparkos SS3602 and MUSES02 for personalized audio tuning.
- • **Value-Driven Hi-Fi:** Professional-grade audio quality without breaking the bank, letting you invest more in your music.
- • **Cool Under Pressure:** Advanced heat dissipation ensures stable, long-lasting performance during marathon listening sessions.
- • **Versatile Placement:** Perfect for home theaters, offices, or bookshelf setups—style meets function effortlessly.
- • **Powerful yet Compact:** Delivers up to 300W of crystal-clear sound in a sleek, space-saving design.

## Overview

The Fosi Audio V3 is a compact Class D stereo power amplifier delivering up to 300W with a high-efficiency TPA3255 chip. It features advanced heat dissipation, a 48V 5A power supply, and customizable op-amps for tailored sound. Engineered for durability and versatility, it fits seamlessly into home theaters or office setups, offering professional-grade Hi-Fi audio at an accessible price point.

## Description

Enjoy rich, detailed audio with this compact, durable power amplifier featuring advanced heat dissipation and customizable op-amp design for personalized sound.

Review: Excellent Amplifer! Very musical results far beyond its price - An amazing amplifier given its size and price point. Properly set up, run in for 24 hours and with a decent Hi-Res Audio signal input, decent cables and suitable speakers and it makes music. The sound is very clean and detailed with no harshness or sibilance. The flat signal response reveals a lot of detail in the music. Not weighted to either end of the frequency range. Very dynamic, good fast attack on solo piano - always a difficult one to project realistically. Not a sound that is aggressive or wearing to listen to. Choosing matching components to provide a balanced system is important, so give it an MP3 input signal you get what you get - medium results, not Hi-Fi. As always one is listening to the system, not individual components. System matching very much matters to the tonal colour especially with cables and speakers. Certainly changing the speakers to +£1000 Spendor, Monitor Audio, Mission etc would unbalance the system and reveal some short-comings - but that would be to use this amplifier far outside its scope of system. One comment I see on several other reviews is the volume control level position ... In my opinion, this knob should be pulled off and set to the 6 o'clock position with the amplifier off (a bit like some older Naim units). Them when the unit is turned on, the volume control rate and progression are correct, in comparison with most expectations with minimum volume around 7 and 10 - 11 being a fair listening level. The 48v PSU now supplied with the unit is capable of providing the dynamic transient peaks without strain, providing adequate reserves and control to avoid 'smearing' of fast pieces and allow quiet passages to feel realistically contrasted with a wide dynamic range. The simplicity of single input and dispensing with tone controls means fewer sound compromises, and gives a superb perfomance far above the expected quality at this price. Enabling you to stop spending more cash on Hi-Fi and spend more on the music itself. Very enjoyable music-making and Very Recommended!
Review: A great little, powerful, Hi-Fi quality amp, that really packs a punch! - I bought this class-D amplifier, mainly as a backup for my 340W per channel power amp. Needless to say, conventional amplifiers of this type are very heavy and designed for rack mounting, whereas this little Fosi Audio amp, fits in the palm of your hand, and is as light as a feather, by comparison. It came with a 5A, 48V, power supply, however, if you want to get the full output (300W into 4 ohms), then you should consider purchasing the amplifier and a 10A, 48V power supply separately. But don’t worry, even with the 5A power supply, it still chucks out around 200W, with a good frequency response and some gut-thumping bass. And, as you probably know, sound is logarithmic… i.e. for a noticeable increase in volume you need to double the output, so this is still a good deal, and the quality of sound is pretty darn good. This is a very portable, no-frills power amp, that you can either use in conjunction with a mixer, as a PA, or simply connect it to your phone or laptop and enjoy the music! 😊 Highly recommended.

## Features

- Immersive Audio Experience - Enjoy rich, detailed dynamics with the Fosi Audio V3 power amplifier, which delivers crystal-clear sound from delicate highs to profound lows. Its customizable op-amp design allows for personalization with upgrades like Sparkos SS3602, MUSES02, and other 8-pin dual options.
- Exceptional Craftsmanship - The Fosi Audio V3 is meticulously engineered with high-quality components, ensuring durability and reliability. Its sturdy metal casing and sophisticated internal circuitry demonstrate our dedication to superior performance. Advanced heat dissipation technology keeps the amplifier cool during extended use, promoting stable operation and a longer lifespan.
- Modern and Compact Design - With its compact form factor and sleek contemporary design, the V3 power amplifier is not only space-efficient but also a harmonious fit for various home decors. Its elegant shape and clean lines enhance any living room, study, or office space, offering both style and functionality.
- Versatile for Various Settings - Enhance your home theater experience with the Fosi Audio V3, filling your living room with rich, immersive sound. Or, let it bring out the subtleties of your music in the quiet of your study or office. Its adaptability across various settings and portable design ensure consistently high-quality sound wherever you place it.
- Performance Meets Practicality - The Fosi Audio V3 provides a listening experience that music enthusiasts and professionals will appreciate, striking a balance between superior sound quality and sensible spending. It's an audio solution that doesn't compromise on excellence, ensuring value in every note.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0CGCSM191 |
| Best Sellers Rank | 5,014 in Electronics & Photo ( See Top 100 in Electronics & Photo ) 7 in Hi-Fi Amplifiers |
| Guaranteed software updates until | unknown |
| Item model number | V3_48V/5A |
| Language | English |
| Manufacturer | Fosi Audio |
| Package Dimensions | 29.21 x 24.13 x 6.73 cm; 1.47 kg |

## Images

![Fosi Audio V3 300W Class D Stereo Power Amplifier, TPA3255 Chip HiFi Audio Amplifier for Home Theater and Bookshelf Speakers, Compact Design with Advanced Heat Dissipation with 48V5A Power Supply - Image 1](https://m.media-amazon.com/images/I/51jOyYN2wnL.jpg)

## Questions & Answers

**Q: How to change audio balance levels between the left and right audio channels?**
A: 1. Computer: Settings > Sound > Fosi Audio, and change the left and right balance levels. 2. iPhone: Settings > Accessibility >Audio/Visual> Balance, slide horizontal slider to the left or right to adjust the balance.

**Q: Do I need a pair of the same opamps or can they be swapped in different combinations?**
A: If your OP-AMP is pin-to-pin (P2P), meaning the pins and functions of the two OP-AMPs are exactly the same, so you can directly install one model at a time. However, there might be a difference in sound quality or sound volume on one side.

**Q: What is a difference between two versions of V3 amp - 32v and 48v?**
A: Compared to a 32V power supply, a 48V power supply can enhance the amplifier's power output, providing more headroom to prevent distortion and enabling it to drive larger, more powerful, or higher-impedance speakers.

**Q: Can the V3 amplifier be bridged to work as a monoblock amplifier?**
A: It doesn't support bridge mode.

**Q: Only one channel has a sound or unbalanced output?**
A: Cross-check left & right speakers, speaker wires, input cable eliminating either speaker or wiring. Please ensure that the speaker wire is correctly connected and not bent.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Excellent Amplifer! Very musical results far beyond its price
*by C***R on 2 June 2024*

An amazing amplifier given its size and price point. Properly set up, run in for 24 hours and with a decent Hi-Res Audio signal input, decent cables and suitable speakers and it makes music. The sound is very clean and detailed with no harshness or sibilance. The flat signal response reveals a lot of detail in the music. Not weighted to either end of the frequency range. Very dynamic, good fast attack on solo piano - always a difficult one to project realistically. Not a sound that is aggressive or wearing to listen to. Choosing matching components to provide a balanced system is important, so give it an MP3 input signal you get what you get - medium results, not Hi-Fi. As always one is listening to the system, not individual components. System matching very much matters to the tonal colour especially with cables and speakers. Certainly changing the speakers to +£1000 Spendor, Monitor Audio, Mission etc would unbalance the system and reveal some short-comings - but that would be to use this amplifier far outside its scope of system. One comment I see on several other reviews is the volume control level position ... In my opinion, this knob should be pulled off and set to the 6 o'clock position with the amplifier off (a bit like some older Naim units). Them when the unit is turned on, the volume control rate and progression are correct, in comparison with most expectations with minimum volume around 7 and 10 - 11 being a fair listening level. The 48v PSU now supplied with the unit is capable of providing the dynamic transient peaks without strain, providing adequate reserves and control to avoid 'smearing' of fast pieces and allow quiet passages to feel realistically contrasted with a wide dynamic range. The simplicity of single input and dispensing with tone controls means fewer sound compromises, and gives a superb perfomance far above the expected quality at this price. Enabling you to stop spending more cash on Hi-Fi and spend more on the music itself. Very enjoyable music-making and Very Recommended!

### ⭐⭐⭐⭐⭐ A great little, powerful, Hi-Fi quality amp, that really packs a punch!
*by E***S on 16 May 2024*

I bought this class-D amplifier, mainly as a backup for my 340W per channel power amp. Needless to say, conventional amplifiers of this type are very heavy and designed for rack mounting, whereas this little Fosi Audio amp, fits in the palm of your hand, and is as light as a feather, by comparison. It came with a 5A, 48V, power supply, however, if you want to get the full output (300W into 4 ohms), then you should consider purchasing the amplifier and a 10A, 48V power supply separately. But don’t worry, even with the 5A power supply, it still chucks out around 200W, with a good frequency response and some gut-thumping bass. And, as you probably know, sound is logarithmic… i.e. for a noticeable increase in volume you need to double the output, so this is still a good deal, and the quality of sound is pretty darn good. This is a very portable, no-frills power amp, that you can either use in conjunction with a mixer, as a PA, or simply connect it to your phone or laptop and enjoy the music! 😊 Highly recommended.

### ⭐⭐⭐⭐ Amazing sound but lacks an important feature
*by R***S on 31 December 2023*

I can't compare this amp with any other products in the same class D amp category, there might be a better performing amp for this price. I first tried it with my big Tannoy Cheviots but this was obviously asking too much for the little V3 to bare. However when I hooked it up to my Tannoy Revoutions, the full potential was immediate. As a nearfield amp, it works perfectly well. The makers have not correctly labeled the pre-out socket. This is in fact, a fixed line level out. This is only useful for connecting to a recording device or maybe to another amp that has its own volume control. So if you want to use this unit to power a subwoofer, you will always be adjusting the volumes to match each other. Just as a stand alone amp, paired with the right speakers I doubt if anything beats the price

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*Product available on Desertcart South Korea*
*Store origin: KR*
*Last updated: 2026-02-05*