---
product_id: 279002309
title: "Subwoofer Amplifier Receiver 100Watt Mini Hi-Fi Digital Class D Integrated Stereo Audio Amp for Sub Bass + Power Supply TP-01"
brand: "fosi audio"
price: "R$1503"
currency: BRL
in_stock: true
reviews_count: 5
category: "Fosi Audio"
url: https://www.desertcart.com.br/products/279002309-subwoofer-amplifier-receiver-100watt-mini-hi-fi-digital-class-d
store_origin: BR
region: Brazil
---

# Class D digital efficiency 100W powerful output Compact mini Hi-Fi design Subwoofer Amplifier Receiver 100Watt Mini Hi-Fi Digital Class D Integrated Stereo Audio Amp for Sub Bass + Power Supply TP-01

**Brand:** fosi audio
**Price:** R$1503
**Availability:** ✅ In Stock

## Summary

> 🎵 Feel the bass, not the bulk – power your sound with precision!

## Quick Answers

- **What is this?** Subwoofer Amplifier Receiver 100Watt Mini Hi-Fi Digital Class D Integrated Stereo Audio Amp for Sub Bass + Power Supply TP-01 by fosi audio
- **How much does it cost?** R$1503 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.br](https://www.desertcart.com.br/products/279002309-subwoofer-amplifier-receiver-100watt-mini-hi-fi-digital-class-d)

## 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

- • **Space-Savvy Design:** Compact dimensions (13.21 x 8.89 x 3.56 cm) fit seamlessly into any modern audio setup or workspace.
- • **Next-Gen Efficiency:** Class D digital amplifier technology ensures high performance with minimal heat and power waste.
- • **Pure Power, Pure Bass:** Delivers a robust 100W output to energize your subwoofers with deep, punchy bass.
- • **Plug & Play Simplicity:** Comes with a dedicated power supply (TP-01) for hassle-free installation and instant audio upgrade.
- • **Trusted by Audiophiles:** Highly rated for powering dual 10" woofers, making it a go-to choice for home audio enthusiasts.

## Overview

The Fosi Audio Subwoofer Amplifier Receiver M04 is a compact, 100W Class D digital stereo amplifier designed to deliver powerful, efficient bass performance. Ideal for subwoofers up to 10", it combines a mini Hi-Fi form factor with a dedicated power supply for easy setup, making it a top choice for audiophiles seeking high-quality sound in a sleek package.

## Description

Fosi Audio Subwoofer Amplifier Receiver 100Watt Mini Hi-Fi Digital Class D Integrated Stereo Audio Amp for Sub Bass + Power Supply TP-01 : desertcart.ae: Electronics

Review: Works as advertised
Review: Funciona perfectamente bien, alimentando 2 woofers de 10".

## Features

- Item Category: Electronic Component Amplifier
- Item Trademark: Fosi Audio
- manufacturer: Generic

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07942M4MC |
| Best Sellers Rank | #79,008 in Electronics ( See Top 100 in Electronics ) #202 in Home Audio Amplifiers |
| Item model number | M04 |
| Manufacturer | Generic |
| Product Dimensions | 13.21 x 8.89 x 3.56 cm; 450 g |

## Product Details

- **Item dimensions L x W x H:** 13.2 x 8.9 x 3.6 centimeters
- **Manufacturer:** Generic
- **Maximum supply voltage:** 19 Volts (DC)
- **Minimum supply voltage:** 10 Volts (DC)
- **Voltage:** 12 Volts (DC)

## Images

![Subwoofer Amplifier Receiver 100Watt Mini Hi-Fi Digital Class D Integrated Stereo Audio Amp for Sub Bass + Power Supply TP-01 - Image 1](https://m.media-amazon.com/images/I/51ghuLx4kZL.jpg)

## Questions & Answers

**Q: Will this power up passive subwoofers ?**
A: Yes, absolutely. That's the reason I bought it and it works just fine without spending a whole lot of money.

**Q: How hot does this amp run?  The unit I currently use is very hot to the touch even after a short while.**
A: This thing seems cool no issues

**Q: What is the input voltage range?**
A: Not sure what your question is about.  If you mean input power, it's spec'd. at 12-24 vdc.  It comes with a power brick rated at 19 vdc, 4.47 amps.  Input sensitivity is =< 280 mv...

**Q: I have a Harman Kardon reciver with a single rca sub connection. What cables do i need to hook my sub to this amp and the amp to my reciever**
A: You need 1/8 audio plug to RCA adapter ..

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by C***Y on 15 July 2025*

Works as advertised

### ⭐⭐⭐⭐⭐ Review
*by L***M on 14 January 2026*

Funciona perfectamente bien, alimentando 2 woofers de 10".

### ⭐⭐⭐⭐⭐ Review
*by A***M on 16 February 2024*

Got this subwoofer amp to bypass the amp component of my active subwoofer which died months ago due to a peak in voltage. My amp was those that work in "stand-by" mode, so they are always powered up somehow. Replacing the board with a new one (original) was too expensive, even more expensive than what the sub costed me in the first place, so in order to not throw the box and the woofer cone to the trash, I decided to just rewire things up in order to bypass the sub's integrated amp, so I got this GREAT little FOSI amp to power my "now passive" sub. Things worked great and my sub is now back to life, shining again. The M04 Fosi Amp is a great choice as it is POWERFUL, noiseless (at least to my ear), very small and does not generate any important heat. It comes with a power adapter, so you only need the cables to connect the input signal and the output signal to the passive subwoofer. I used the convenient "bare wire connection" to hook the modified sub to the speaker output of the Fosi Amp. Worked NICELY. Quality of the M04 Fosi AMP is VERY GOOD, in a very neat, compact and ellegant BLACK enclosure. It is definitely worth the money, which is NOT AT ALL expensive, but quality exceeds by far the amount paid for this amp. Until now, i'm really loving it.

## Frequently Bought Together

- Fosi Audio M04 Subwoofer Amplifier for Home Theater Mono Channel Digital Class D Integrated Power Amp for Passive Speakers Subwoofer
- FosPower RCA Y-Adapter (3 Feet), 1 RCA Male to 2 RCA Male Short Y Splitter Digital Stereo Audio Cable for Subwoofer, Home Theater, Hi-Fi - Dual Shielded | 24K Gold Plated
- Tan QY 2RCA to 2RCA Cable 3Ft, Gold-Plated 2 RCA Male to 2 RCA Male Stereo Audio Cable for Home Theater, HDTV, Gaming Consoles, Hi-Fi Systems (3Ft/1M)

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**Shop now:** [https://www.desertcart.com.br/products/279002309-subwoofer-amplifier-receiver-100watt-mini-hi-fi-digital-class-d](https://www.desertcart.com.br/products/279002309-subwoofer-amplifier-receiver-100watt-mini-hi-fi-digital-class-d)

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*Product available on Desertcart Brazil*
*Store origin: BR*
*Last updated: 2026-01-29*