---
product_id: 535540557
title: "Fosi Audio V3 Stereo Amplifier Home Audio 300 Watts x2 Power TPA3255 Class D Mini Amp 2 Channel Audio Component for Passive Bookshelf Tower Speakers Desktop Home Theater with 32V Power Supply"
brand: "fosi audio"
price: "R3626"
currency: ZAR
in_stock: true
reviews_count: 8
category: "Fosi Audio"
url: https://www.desertcart.co.za/products/535540557-fosi-audio-v3-stereo-amplifier-home-audio-300-watts-x2
store_origin: ZA
region: South Africa
---

# 600W peak power output Swappable op-amps for custom sound Innovative full-body heatsink cooling Fosi Audio V3 Stereo Amplifier Home Audio 300 Watts x2 Power TPA3255 Class D Mini Amp 2 Channel Audio Component for Passive Bookshelf Tower Speakers Desktop Home Theater with 32V Power Supply

**Brand:** fosi audio
**Price:** R3626
**Availability:** ✅ In Stock

## Summary

> 🎶 Power Meets Precision — Amplify Your Space with Fosi V3

## Quick Answers

- **What is this?** Fosi Audio V3 Stereo Amplifier Home Audio 300 Watts x2 Power TPA3255 Class D Mini Amp 2 Channel Audio Component for Passive Bookshelf Tower Speakers Desktop Home Theater with 32V Power Supply by fosi audio
- **How much does it cost?** R3626 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/535540557-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:** Sleek mini amp delivering up to 600W total power to effortlessly drive 2-8Ω speakers in any setup.
- • **Next-Level Cooling:** Advanced venting and whole-body heatsink design keep your amp cool under pressure for reliable performance.
- • **Customizable Soundstage:** Easily swap op-amps to tailor your audio signature—because your sound should be as unique as you are.
- • **Flexible Pre-Out Control:** Volume-controlled pre-out lets you fine-tune external audio gear seamlessly for a personalized listening experience.
- • **Audiophile-Grade Precision:** Premium Japanese and German components ensure crystal-clear sound with ultra-low distortion and noise.

## Overview

The Fosi Audio V3 is a compact, high-performance Class D stereo amplifier delivering up to 300W per channel (600W total) with premium audiophile components. Its innovative cooling system ensures durability, while swappable op-amps and volume-controlled pre-out offer customizable, crystal-clear sound for desktop, bookshelf, or home theater setups.

## Description

Buy Fosi Audio V3 Stereo Amplifier Home Audio 300 Watts x2 Power TPA3255 Class D Mini Amp 2 Channel Audio Component for Passive Bookshelf Tower Speakers Desktop Home Theater with 32V 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: Excellent Beast of an Amplifier - Don't believe the 300 watt claims of the manufacturer. (I don't know why they just don't rate the amp with RMS real world specs). Still the Fosi Audio V3 is an excellent amplifier when paired with the optional 48V power supply, although it increases the cost. With the supplied stock power supply, the amp can deliver about 30 watts of real power and with the 48V power supply it can deliver about 80 watts of unadulterated bliss. The sound is clean with absolutely no hiss. You can tailor the sound by easily replacing the socketed OpAmps inside the amp, just make sure you insert them with the proper polarity. OpAmps can range from several to over a hundred dollars for a set. Better OpAMps can give you better depth and a wider sound stage as well as a mellower sound. Remember this is a no frills amplifier with only pair of inputs, it is basically a volume knob and nothing else. But this is perfect when used as a desktop amplifier to drive a pair of desktop speakers. In this mode of operation, you do not need the optional power supply since most desktop speakers are quite efficient and do not need much power. The 48V provides a more heft to the sound with the added power. It can easily deliver enough power to drive most speakers. With either power supply, the amp seems capable of driving even 4-ohm loads without distortion which most modern amps fail to do. Some Pros: * Cheap but great value * Compact size * Very efficient * Swappable OpAmps * High quality components: Elna capacitors, WIMA Output capacitors, Sumida inductors and NCC Capacitors Some cons: * Fosi used to supply the amp with the copper volume knob as well as the black one but it is now an added option. * The amp goes to sleep rather quickly after the input signal is cut. It takes about six seconds for it to come alive when signal is restored. * There is only one pair of RCA inputs * No Bluetooth capability * No subwoofer output

## 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. When replacing the op-amp, please make sure the chip is oriented correctly and the procedure is done accurately
- 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 | B0C36S8DCT |
| Best Sellers Rank | #7,965 in Electronics ( See Top 100 in Electronics ) #27 in Audio Component Amplifiers |
| Date First Available | May 5, 2023 |
| Item Weight | 2.51 pounds |
| Item model number | V3 |
| Manufacturer | Fosi Audio |
| Product Dimensions | 6.54 x 4.13 x 1.38 inches |

## Images

![Fosi Audio V3 Stereo Amplifier Home Audio 300 Watts x2 Power TPA3255 Class D Mini Amp 2 Channel Audio Component for Passive Bookshelf Tower Speakers Desktop Home Theater with 32V Power Supply - Image 1](https://m.media-amazon.com/images/I/51jOyYN2wnL.jpg)

## Available Options

This product comes in different **Model** options.

## Questions & Answers

**Q: Even if you put a 48v 11a power supply on it you would still be short of 600w, does this make any sense? is it really max 300w but miss advertised?**
A: That number is misleading, it will never gets to 50watts

**Q: Are each channel mono block? So I can send a differential signal to the rca inputs. Thanks!**
A: https://www.amazon.com/SPRODIO-Converter-Adapter-summing-SC21/dp/B0BRZCGY29/ref=sr_1_1?keywords=stereo+to+mono+converter&qid=1684854327&sr=8-1

**Q: Total new to this. i have a pair of sony sscs5 bookshelf speakers. i don't see a way to add a subwoofer. am i correct?**
A: You either need a 3 channel output device (most basic devices without a sub out are just 2 channels) that can run straight to the sub, or a subwoofer that can accept RCA, and split the RCA signal that would feed this amp before it goes to the amp with two RCA splitters or a stereo RCA splitter cable.

**Q: Does the V3 come with a power supply? If so, which one?**
A: It comes with a 5A, 32VDC power supply. It can put out 160 Watts of power (5A x 32V), not 32 Watts as another answer incorrectly states.

## 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.

### ⭐⭐⭐⭐⭐ Excellent Beast of an Amplifier
*by J***9 on March 16, 2024*

Don't believe the 300 watt claims of the manufacturer. (I don't know why they just don't rate the amp with RMS real world specs). Still the Fosi Audio V3 is an excellent amplifier when paired with the optional 48V power supply, although it increases the cost. With the supplied stock power supply, the amp can deliver about 30 watts of real power and with the 48V power supply it can deliver about 80 watts of unadulterated bliss. The sound is clean with absolutely no hiss. You can tailor the sound by easily replacing the socketed OpAmps inside the amp, just make sure you insert them with the proper polarity. OpAmps can range from several to over a hundred dollars for a set. Better OpAMps can give you better depth and a wider sound stage as well as a mellower sound. Remember this is a no frills amplifier with only pair of inputs, it is basically a volume knob and nothing else. But this is perfect when used as a desktop amplifier to drive a pair of desktop speakers. In this mode of operation, you do not need the optional power supply since most desktop speakers are quite efficient and do not need much power. The 48V provides a more heft to the sound with the added power. It can easily deliver enough power to drive most speakers. With either power supply, the amp seems capable of driving even 4-ohm loads without distortion which most modern amps fail to do. Some Pros: * Cheap but great value * Compact size * Very efficient * Swappable OpAmps * High quality components: Elna capacitors, WIMA Output capacitors, Sumida inductors and NCC Capacitors Some cons: * Fosi used to supply the amp with the copper volume knob as well as the black one but it is now an added option. * The amp goes to sleep rather quickly after the input signal is cut. It takes about six seconds for it to come alive when signal is restored. * There is only one pair of RCA inputs * No Bluetooth capability * No subwoofer output

### ⭐⭐⭐⭐⭐ Outstanding little amp – punches way above its weight
*by C***E on January 20, 2026*

⭐️⭐️⭐️⭐️⭐️ I’m using the Fosi V3 in my home office and I honestly couldn’t be happier with it. I paired it with the 48V / 10A GaN power supply, and that upgrade makes a huge difference — this amp really comes alive. It’s currently driving a pair of B&W DM603 S3 floorstanding speakers, which are not exactly easy to drive, and the Fosi handles them with confidence. Plenty of headroom for near-field and moderate listening levels, excellent control in the bass, and a clean, detailed midrange and treble. No harshness, no fatigue — just smooth, musical sound. What impressed me most is how tight and controlled the bass is, especially considering the size of the amp. The soundstage is stable and well defined, and it never feels strained in my use case. It easily outperforms older budget integrated amps I’ve owned. Build quality is solid, the volume control feels precise, and it runs cool and silently. For a compact Class D amp, this is about as close to “set and forget” as it gets. Key takeaway: If you’re considering the Fosi V3, do yourself a favor and pair it with the 48V PSU. With that combination, this amp is an absolute bargain and a perfect solution for a home office or desktop hi-fi setup. Highly recommended.

## Frequently Bought Together

- Fosi Audio V3 Stereo Amplifier Home Audio 300 Watts x2 Power TPA3255 Class D Mini Amp 2 Channel Audio Component for Passive Bookshelf Tower Speakers Desktop Home Theater with 32V Power Supply
- Fosi Audio Replaceable Control Knob Orange Controller for V3 Amplifier Stereo Amplifier Home Audio
- Fosi Audio 48V 5A Power Adapter Supply for Home Audio Bluetooth Stereo Receiver Amplifier Mini Hi-Fi Class D Integrated Amp

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.co.za/products/535540557-fosi-audio-v3-stereo-amplifier-home-audio-300-watts-x2](https://www.desertcart.co.za/products/535540557-fosi-audio-v3-stereo-amplifier-home-audio-300-watts-x2)

---

*Product available on Desertcart South Africa*
*Store origin: ZA*
*Last updated: 2026-03-15*