---
product_id: 147513418
title: "M03 200 Watt TPA3255 Subwoofer Amplifier Mini Mono Channel Audio Power Amp for Home Theater Full-Frequency and SUB Bass Switchable with 32V/5A Power Supply"
brand: "fosi audio"
price: "₱11736"
currency: PHP
in_stock: true
url: https://www.desertcart.ph/products/147513418-m03-200-watt-tpa3255-subwoofer-amplifier-mini-mono-channel-audio
store_origin: PH
region: Philippines
---

# 200W max power output Ultra-low distortion TI TPA3255 chip Dual mode: Full-frequency & Subwoofer M03 200 Watt TPA3255 Subwoofer Amplifier Mini Mono Channel Audio Power Amp for Home Theater Full-Frequency and SUB Bass Switchable with 32V/5A Power Supply

**Brand:** fosi audio
**Price:** ₱11736
**Availability:** ✅ In Stock

## Summary

> 🎧 Elevate your sound game with power and precision — don’t just listen, experience it!

## Quick Answers

- **What is this?** M03 200 Watt TPA3255 Subwoofer Amplifier Mini Mono Channel Audio Power Amp for Home Theater Full-Frequency and SUB Bass Switchable with 32V/5A Power Supply by fosi audio
- **How much does it cost?** ₱11736 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ph](https://www.desertcart.ph/products/147513418-m03-200-watt-tpa3255-subwoofer-amplifier-mini-mono-channel-audio)

## 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 & Ready:** Sleek mini design with included 32V/5A power supply—ideal for any modern home Hi-Fi system.
- • **Crystal-Clear Sound:** Equipped with Texas Instruments’ PurePath Ultra-HD tech for ultra-low distortion and pristine audio clarity.
- • **Tailored Bass Control:** Built-in low pass filter with adjustable SUB frequency control for perfectly tuned bass response.
- • **Versatile Audio Modes:** Switch effortlessly between full-frequency mono amp and dedicated subwoofer modes to suit your setup.
- • **Powerhouse Performance:** Delivers up to 200W of clean, high-efficiency audio power for immersive home theater sound.

## Overview

The Fosi AudioM03 is a compact, 200-watt mono amplifier featuring Texas Instruments’ advanced TPA3255 chip for ultra-low distortion. It offers dual modes for full-frequency or subwoofer use, with built-in bass control and a 32V/5A power supply, making it a versatile, high-efficiency solution for home theater and Hi-Fi audio setups.

## Description

Fosi Audio M03 200 Watt TPA3255 Subwoofer Amplifier Mini Mono Channel Audio Power Amp for Home Theater Full-Frequency and SUB Bass Switchable with 32V/5A Power Supply

## Features

- Subwoofer Amplifier and Full-Frequency Mono Amp: The audio amplifier offers versatile functionality with two modes. Switch to PBTL mode to use it as a full-frequency mono amplifier for driving passive speakers and powered subwoofers. Switch to SUB mode to use it as a dedicated subwoofer amplifier for driving passive and powered subwoofers.
- Advanced Audio Technology: The audio receiver utilizes the Texas Instruments TPA3255D2 chip, featuring an advanced integrated feedback design and proprietary high-speed gate driver error correction (PurePath Ultra-HD). This technology ensures ultra-low distortion across the audio band, delivering superior audio quality.
- High-Efficiency Power Output: The power amplifier provides high-efficiency power output up to 200 watts. It can deliver 150 watts RMS into 4-ohm loads or 120 watts into 8-ohm loads. (Note: The package includes a 32V/5A power supply, but a more powerful power supply is needed to achieve the maximum power output.)
- Home Hi-Fi Amplifier with Clean Sound Quality: The home stereo receiver is designed for home Hi-Fi systems, offering clean sound quality. It features a built-in low pass filter for 20-300Hz subwoofers with SUB frequency control, making it an excellent amplifier for driving any bookshelf speaker or subwoofer.
- What You Get:M03 amp x1, 32V/5A power adapter x1, and user manual x1.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Number of Channels | 1 |
| Package Type | Box" or "Case |
| Output Power | 1.5E+2 Watts |
| Minimum Supply Voltage | 24 Volts (DC) |
| Mounting Type | Surface Mount |
| Voltage | 32 Volts |
| Item Dimensions | 5.12 x 4.13 x 1.37 inches |

## Product Details

- **Item dimensions L x W x H:** 5.12 x 4.13 x 1.37 inches
- **Voltage:** 32 Volts
- **Manufacturer:** Fosi Audio
- **Maximum Supply Voltage:** 32 Volts (DC)
- **Minimum Supply Voltage:** 24 Volts (DC)

## Images

![M03 200 Watt TPA3255 Subwoofer Amplifier Mini Mono Channel Audio Power Amp for Home Theater Full-Frequency and SUB Bass Switchable with 32V/5A Power Supply - Image 1](https://m.media-amazon.com/images/I/51zTVamBsHL.jpg)

## Questions & Answers

**Q: If the power going in to this unit is 32v 5amp = 160 watts. How is this unit rated 300 watts?**
A: I tested the continuous wattage output using the 32v 5amp supply that comes with it.  I get 50 watts driving 8 ohm, 100 watts driving 4 ohm and 200 watts driving 2 ohm.  I tested with a scope and sine wave.  You get about 20 volts RMS before the sine wave starts to square off at the peaks.  The 50 watts at 8 ohms is surprisingly loud but my 8 ohm speaker is very efficient Electrovoice EVM15 in a Thiel box.

**Q: I can't seem to fine the rms watts. does anyone know the true specs? power at 2 ohms, at four ohms. peak does not mean much.**
A: I put it on an oscilloscope and fed it a sine wave across a 2 ohm, 4 ohm and 8 ohm load resistor.  Using the power supply that it comes with this unit (32V 5A) I see the sine wave start to clip right around 20 volts RMS.   It works out to  50 watts with an 8 ohm load, 100 watts with 4 ohm load and 200 watts with a 2 ohm load.

**Q: What is the maximum voltage and current can be used as it comes with 32VDC at 5 amp.**
A: The power supply current rating of 5A is not quite enough to get the maximum rated output, but it doesn't fall short by much. There are tradeoffs with duty cycle, thermal management, equipment life, program spectral characteristics, etc. but they don't really amount to more than giving precision to common sense. All you need to know is that you can always use a higher current supply without any concern. A 10A supply will run cooler, longer, and cleaner. It is the voltage that has to be in bounds and for this chip TI specifies the working range to be 24-35V and the maximum power to be 300 Wrms. If you want to upgrade get a 36V unit rated over 300 watts, e.g. Mean Well MW LRS-350-36 (9.7A) AND turn the voltage down to 35V or less.

**Q: If using as a full-frequency mono amp to a passive speaker, can the RCA output still go to a powered sub with the frequency control for the sub only?**
A: Yes,

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*Product available on Desertcart Philippines*
*Store origin: PH*
*Last updated: 2026-01-31*