---
product_id: 594791511
title: "Fosi Audio V3 Stereo Amplifier Home Audio 300 Watts x2 Power TPA3255 Class D Mini Speaker Amp 2 Channel Audio Component for Passive Bookshelf Tower Speakers Desktop Home Theater with 48V Power Supply"
brand: "fosi audio"
price: "33123 kr"
currency: ISK
in_stock: true
reviews_count: 8
category: "Fosi Audio"
url: https://www.desertcart.is/products/594791511-fosi-audio-v3-stereo-amplifier-home-audio-300-watts-x2
store_origin: IS
region: Iceland
---

# 600W peak power output Innovative full-body heatsink cooling Volume-controlled Pre-out flexibility Fosi Audio V3 Stereo Amplifier Home Audio 300 Watts x2 Power TPA3255 Class D Mini Speaker Amp 2 Channel Audio Component for Passive Bookshelf Tower Speakers Desktop Home Theater with 48V Power Supply

**Brand:** fosi audio
**Price:** 33123 kr
**Availability:** ✅ In Stock

## Summary

> 🎧 Power Meets Precision — Amplify Your Space, Own the Sound

## Quick Answers

- **What is this?** Fosi Audio V3 Stereo Amplifier Home Audio 300 Watts x2 Power TPA3255 Class D Mini Speaker Amp 2 Channel Audio Component for Passive Bookshelf Tower Speakers Desktop Home Theater with 48V Power Supply by fosi audio
- **How much does it cost?** 33123 kr with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.is](https://www.desertcart.is/products/594791511-fosi-audio-v3-stereo-amplifier-home-audio-300-watts-x2)

## 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

- • **Compact Powerhouse:** Delivers a massive 300W per channel in a sleek, minimalist design perfect for any desktop or home theater setup.
- • **Customizable Sound:** Swap out op-amps effortlessly to tailor your audio signature and elevate your listening experience to pro-level.
- • **Next-Level Cooling:** Advanced heat dissipation with top & bottom vents plus full-body heatsink ensures consistent peak performance without overheating.
- • **Flexible Pre-out Control:** Adjust output volume directly via the main volume knob for seamless integration with subwoofers or additional audio gear.
- • **Audiophile-Grade Precision:** Equipped with premium TPA3255 chip and high-end Japanese & German components for crystal-clear sound with ultra-low distortion.

## Overview

The Fosi Audio V3 Stereo Amplifier is a compact yet powerful Class D amplifier delivering 300 watts per channel with premium audiophile components. Its innovative cooling design ensures reliable performance, while customizable op-amps and an enhanced pre-out feature offer versatile sound tailoring. Ideal for driving passive bookshelf or tower speakers in desktop or home theater setups, it combines high-end sound quality with minimalist style, making it a top choice for discerning audio enthusiasts seeking professional-grade performance on a budget.

## Description

Buy Fosi Audio V3 Stereo Amplifier Home Audio 300 Watts x2 Power TPA3255 Class D Mini Speaker Amp 2 Channel Audio Component for Passive Bookshelf Tower Speakers Desktop Home Theater with 48V Power Supply: Amplifiers - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

Review: Great little amp for the money. - Ordered the Fosi V3 to replace a Fosi 20a I had purchased some time ago. The main differences are, the V3 is a more simplistic setup, promises more power per channel, and uses high quality parts internally. It can come with either a 32 volt or 48 volt power supply. Opt for the 48 volt power supply, you will not regret it. The larger more powerful power supply will get you higher volumes with better quality output On the back side of this unit are connects for a pair of speakers and an analogue input. The older Fosi 20a just did not have as much power particularly with only the supplied 24 volt power supply and fell short driving my Polk Atrium 6 speakers at loud volume. Now, I am using this as a garage system. Hence, the reason I chose to go on the cheap with this system. But....the Fosi V3 got decent audio reviews so what the heck. The garage system is a music system to accompany working on projects or the cars vs. just sitting and listening to music like I do with my home systems that cost much much more. So after connecting up an older generation Echo device to stream music, I used 14 gauge audio cable to connect the speakers to the amp. Very easy to do. The result is as you see it in the attached video. Loud enough for me and the overall sound quality is very good. So, this unit has few connectivity options but what it does, it does well. What I really like about this amp is its small size allowing me to store it in my garage wall cabinet. I would imagine this amp could be part of a home system in a small to mid size room Just be sure to match it up with a pair of good speakers. Speakers with a high efficiency rating will serve you best that is 90db or better. Recommended.
Review: Fosi Audio V3: A Budget Amplifier paired with really nice speakers? - I had been hearing about the release of this amp from various forums and decided to experiment with it with a couple of speakers that I have acquired I’ve the last 6 years I or so. I’m a bargain hunter at heart. On one end, I have a pair of Klipsch LaScala’s from the early 1980’s that I resurrected from the dead. They were in horrible shape and came from a church that used them as their auditorium PA. They are know for their efficiency and usually have synergies with tube amps. On the other end, I have the electrostatic Martin Logan ESL’s, which sound completely different, are very detailed and have a reputation of being challenging to drive, although the newer Martin Logan’s don’t have this problem as much. I have been using a 90 watt per channel tube integrated amp and was really looking for an amp that was much cleaner and imparted less distortion, which a tube amp for the most part is built to do. The tube amp sounds great but it seems to blur the sound a bit, if that makes sense. With the LaScala’s, the V3 power was way more needed to drive them. It didn’t sound harsh or brittle and in fact, was completely quiet with the volume knob maxed. My tube amp imparts a slight hiss at the tweeter that is audible from my sitting position. The V3, checked all the boxes and did everything well. The highs and mids were nice and balanced and the biggest difference was with the low end. I have 2 SVS SB1000 subs and the V3 really provided nice and controlled texture to the bass region, something that was lacking in my tube amp. I won’t go as far as using the magical language to describe the sound that many audiophiles use but as this is a subjective review, what I can say is that the amp did its job and at this price, it really is a no-brainer for people that even are wanting to use this will quality speakers. Martin Logan ESL’s Challenge: These speakers are known to have dynamic impedance swings, with ohms that often dip, making them a tough act for many amplifiers. But the Fosi V3 didn’t strain at all. It provided consistent power, ensuring the ESL’s remained articulate and expressive. Much better than my tube integrated. The dips in ohms which could cause some amplifiers to falter, only showcased the stability of the V3. Very surprising for the low cost. Again, what can I say…these small inexpensive amps have improved to the point where they are an incredible value. Conclusion: The Fosi Audio V3 isn’t just a budget amplifier. It’s an amplifier that can be used with expensive speakers. For anyone hesitant to use the Fosi in similar use cases, give it a try. For the price, there’s very little to lose.

## Features

- Compact Yet Powerful: The V3 mini power amplifier combines a minimalist design with exceptional performance. With a power output of up to 600W, it can effortlessly drive 2-8Ω speakers, delivering impressive sound quality. Its compact size makes it suitable for various applications, from bookshelves and desktop setups to home theaters
- Audiophile-Grade Components: It features the TPA3255 high-end digital class D amp chip and utilizes premium Japanese NCC, ELNA, and German WIMA capacitors, and Japanese Sumida inductors for exceptional audio quality. With a SINAD rating of up to 88dB, an SNR of up to 110dB, and a low noise floor of only 140uV, it delivers exceptional clarity and low distortion
- Innovative Cooling: The V3 stands out with its groundbreaking heat dissipation design. Equipped with vents on the casing's top and bottom, and a whole-body heatsink design, it efficiently dissipates heat, preventing damage to components and ensuring optimal performance
- Scalable and Fun: Tailor your sound experience by swapping the stock NE5532 op-amps. V3 is compatible with a variety of 8-pin dual op-amps like Sparkos SS3602, MUSES02, OPA2604, OPA2134PA, OP249, AD827, RM4559, LM4562, LME49720HA, etc
- Enhanced Pre-out Functionality: The V3 features an optimized "Pre-out" design. The level is now controlled by the volume control, allowing for adjustable sound levels when connected to the "Pre-out." This enhancement offers greater flexibility and convenience for users who prefer to fine-tune their audio experience

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0CGCSM191 |
| Best Sellers Rank | #8,600 in Electronics ( See Top 100 in Electronics ) #29 in Audio Component Amplifiers |
| Date First Available | August 23, 2023 |
| Item Weight | 3.24 pounds |
| Item model number | V3_48V/5A |
| Language | English |
| Manufacturer | Fosi Audio |
| Package Dimensions | 11.5 x 9.5 x 2.65 inches |

## Images

![Fosi Audio V3 Stereo Amplifier Home Audio 300 Watts x2 Power TPA3255 Class D Mini Speaker Amp 2 Channel Audio Component for Passive Bookshelf Tower Speakers Desktop Home Theater with 48V Power Supply - Image 1](https://m.media-amazon.com/images/I/51jOyYN2wnL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great little amp for the money.
*by J***H on February 1, 2025*

Ordered the Fosi V3 to replace a Fosi 20a I had purchased some time ago. The main differences are, the V3 is a more simplistic setup, promises more power per channel, and uses high quality parts internally. It can come with either a 32 volt or 48 volt power supply. Opt for the 48 volt power supply, you will not regret it. The larger more powerful power supply will get you higher volumes with better quality output On the back side of this unit are connects for a pair of speakers and an analogue input. The older Fosi 20a just did not have as much power particularly with only the supplied 24 volt power supply and fell short driving my Polk Atrium 6 speakers at loud volume. Now, I am using this as a garage system. Hence, the reason I chose to go on the cheap with this system. But....the Fosi V3 got decent audio reviews so what the heck. The garage system is a music system to accompany working on projects or the cars vs. just sitting and listening to music like I do with my home systems that cost much much more. So after connecting up an older generation Echo device to stream music, I used 14 gauge audio cable to connect the speakers to the amp. Very easy to do. The result is as you see it in the attached video. Loud enough for me and the overall sound quality is very good. So, this unit has few connectivity options but what it does, it does well. What I really like about this amp is its small size allowing me to store it in my garage wall cabinet. I would imagine this amp could be part of a home system in a small to mid size room Just be sure to match it up with a pair of good speakers. Speakers with a high efficiency rating will serve you best that is 90db or better. Recommended.

### ⭐⭐⭐⭐⭐ Fosi Audio V3: A Budget Amplifier paired with really nice speakers?
*by D***R on July 26, 2023*

I had been hearing about the release of this amp from various forums and decided to experiment with it with a couple of speakers that I have acquired I’ve the last 6 years I or so. I’m a bargain hunter at heart. On one end, I have a pair of Klipsch LaScala’s from the early 1980’s that I resurrected from the dead. They were in horrible shape and came from a church that used them as their auditorium PA. They are know for their efficiency and usually have synergies with tube amps. On the other end, I have the electrostatic Martin Logan ESL’s, which sound completely different, are very detailed and have a reputation of being challenging to drive, although the newer Martin Logan’s don’t have this problem as much. I have been using a 90 watt per channel tube integrated amp and was really looking for an amp that was much cleaner and imparted less distortion, which a tube amp for the most part is built to do. The tube amp sounds great but it seems to blur the sound a bit, if that makes sense. With the LaScala’s, the V3 power was way more needed to drive them. It didn’t sound harsh or brittle and in fact, was completely quiet with the volume knob maxed. My tube amp imparts a slight hiss at the tweeter that is audible from my sitting position. The V3, checked all the boxes and did everything well. The highs and mids were nice and balanced and the biggest difference was with the low end. I have 2 SVS SB1000 subs and the V3 really provided nice and controlled texture to the bass region, something that was lacking in my tube amp. I won’t go as far as using the magical language to describe the sound that many audiophiles use but as this is a subjective review, what I can say is that the amp did its job and at this price, it really is a no-brainer for people that even are wanting to use this will quality speakers. Martin Logan ESL’s Challenge: These speakers are known to have dynamic impedance swings, with ohms that often dip, making them a tough act for many amplifiers. But the Fosi V3 didn’t strain at all. It provided consistent power, ensuring the ESL’s remained articulate and expressive. Much better than my tube integrated. The dips in ohms which could cause some amplifiers to falter, only showcased the stability of the V3. Very surprising for the low cost. Again, what can I say…these small inexpensive amps have improved to the point where they are an incredible value. Conclusion: The Fosi Audio V3 isn’t just a budget amplifier. It’s an amplifier that can be used with expensive speakers. For anyone hesitant to use the Fosi in similar use cases, give it a try. For the price, there’s very little to lose.

### ⭐⭐⭐⭐ Solid Little Amp - but Give It the Power It Deserves
*by B***B on August 27, 2025*

I’ve spent some time with the Fosi Audio V3 paired with the 36V stock power supply, and while it’s an impressive performer for the price, it’s clear that this amp is capable of more - and deserves more. Out of the box, the V3 offers solid clarity, good soundstage, and tight control over the low end. It’s a clean, neutral-sounding amp with plenty of detail, and it drives efficient speakers well at moderate volumes. But there’s a noticeable ceiling on dynamics and fullness when using the 36V supply. The sound lacks a bit of headroom and warmth - especially if you’re coming from a more musical amp like a Tripath-based model or something with a bit more current behind it. After hearing what others have experienced with the 48V power supply, I’m convinced that’s the way to go. Users consistently report more impact, better bass, improved dynamics, and a general liveliness that the 36V setup just doesn’t deliver. Yes, the 48V supply costs extra - sometimes as much as the amp itself - but in this case, the upgrade is absolutely worth it if you want the V3 to perform at its full potential. If you’re budget-conscious, the 36V setup still makes a fine minimalist rig for desktops or secondary systems. But if you’re chasing performance and musicality, bite the bullet and get the 48V supply. This little amp punches way above its weight - when you feed it right.

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*Product available on Desertcart Iceland*
*Store origin: IS*
*Last updated: 2026-02-02*