---
product_id: 460060253
title: "Diitao 50W×2+100W Bluetooth Power Amplifier Board with Subwoofer 2.1 Channel, 12V-24V Audio Power Amplifier Module with Treble and Bass Control for DIY Bluetooth Audio ZK-MT21, Blac"
brand: "diitao"
price: "€ 9.11"
currency: EUR
in_stock: false
url: https://www.desertcart.nl/products/460060253-diitao-50w-2-100w-bluetooth-power-amplifier-board-with-subwoofer
store_origin: NL
region: Netherlands
---

# Bluetooth 5.0 with 49ft range 50W×2+100W output power Multi-layer protection system Diitao 50W×2+100W Bluetooth Power Amplifier Board with Subwoofer 2.1 Channel, 12V-24V Audio Power Amplifier Module with Treble and Bass Control for DIY Bluetooth Audio ZK-MT21, Blac

**Brand:** diitao
**Price:** € 9.11
**Availability:** ❌ Out of Stock

## Summary

> 🎶 Amplify your space, wirelessly and worry-free!

## Quick Answers

- **What is this?** Diitao 50W×2+100W Bluetooth Power Amplifier Board with Subwoofer 2.1 Channel, 12V-24V Audio Power Amplifier Module with Treble and Bass Control for DIY Bluetooth Audio ZK-MT21, Blac by diitao
- **How much does it cost?** € 9.11 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.nl](https://www.desertcart.nl/products/460060253-diitao-50w-2-100w-bluetooth-power-amplifier-board-with-subwoofer)

## Best For

- diitao enthusiasts

## Why This Product

- Trusted diitao brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **DIY Friendly:** Compact 36×25×10mm heat sink design and included DC conversion plug make integration effortless.
- • **Built to Last:** Equipped with short-circuit, over-current, over-heat, and reverse polarity protection for worry-free use.
- • **Powerhouse Output:** Delivers crisp 2.1 channel sound with 50W×2 + 100W subwoofer power for immersive audio.
- • **Custom Sound Control:** Fine-tune your audio with dedicated treble and bass controls for a personalized listening experience.
- • **Seamless Connectivity:** Bluetooth 5.0 ensures stable wireless streaming up to 49 feet—ditch the cables, keep the vibe.

## Overview

The Diitao ZK-MT21 Bluetooth Power Amplifier Board is a compact, high-performance 2.1 channel module delivering 50W×2 plus 100W subwoofer output. Featuring Bluetooth 5.0 with a 49-foot wireless range, 3.5mm AUX input, and advanced protection mechanisms, it supports 12V-24V power supplies and 4-8Ω speakers. Ideal for DIY audio projects, it offers precise treble and bass control and comes with a DC conversion plug for versatile installation.

## Description

When you have a retro high-grade plug-in subwoofer at home, you can match this ZK-MT21Bluetooth power amplifier board, so you can have a high-grade retro bluetooth subwoofer!SpecificationZK-MT21 Bluetooth power amplifier board parametersModel: ZK-MT21Bluetooth Version: 5.0 (Without occlusion 49 Feet)Audio Input: AUX + BluetoothChannel: 2.1 StereoAdaption Supply Voltage: 12-24V / 5A aboveSpeaker: 20-100W, 4-8OhmOutput Power: max 50W R&L channel; max 100W subwooferProtection Mechanism: Anti reverse connection, overheating, overcurrent, short circuit protectionThe antenna can be directly welded, or the antenna base can be weldedNOTE:Please note that this product does not include a power supply, you need to equip it with a DC power supply.It is recommended to use a DC power supply within 20V. If you use a battery pack to supply power, make sure that the battery voltage is lower than the rated voltage when the battery is fully charged.Package includes: 1* ZK-MT21 circuit board1*Top cover1*lower cover4*Support copper column5*Silver knob cap9*M2*3 screws1*Screwdriver1*DC adapter（All parts are packed in a beautiful carton, you need to DIY a ZK-MT21 Bluetooth power amplifier board by yourself）

## Features

- 【ZK-MT21 Power Amplifier Board】Uses Bluetooth 5.0, and its transmission distance can reach 49 feet (without obstruction). At the same time, this power amplifier board has a 3.5mm AUX audio input interface.
- 【Specification】With 36*25*10mm heat sink, suitable for power supply DC12-24V/5A or above (24V battery pack cannot be connected), suitable for speakers 20~100W, 4~8Ω.
- 【Protection Function】ZK-MT21 Bluetooth power amplifier board has multiple protection mechanisms to ensure its safe operation. It has short-circuit protection, over-current, over-heat, and anti-reverse protection.
- 【Come With DC Conversion Plug】The DC adapters on the market (plug specification 5.5mm*2.1mm) basically can meet the needs of the ZK-MT21 Bluetooth power amplifier board. If your existing DC power plug is not 5.5mm*2.1mm, there is no The problem is because we have included a DC conversion plug in the product.
- 【Tips】There will be enough output power only when the audio input is sufficient and the power supply voltage/current is sufficient.The higher the power supply voltage, the greater the output power, the smaller the speaker impedance, the greater the output power.Please make sure that the power of the adapted power supply is greater than the actual power of the power amplifier!

## Product Details

- **Voltage:** 24 Volts
- **Manufacturer:** Diitao
- **Maximum supply voltage:** 24 Volts
- **Minimum supply voltage:** 12 Volts
- **Mounting type:** Surface Mount

## Images

![Diitao 50W×2+100W Bluetooth Power Amplifier Board with Subwoofer 2.1 Channel, 12V-24V Audio Power Amplifier Module with Treble and Bass Control for DIY Bluetooth Audio ZK-MT21, Blac - Image 1](https://m.media-amazon.com/images/I/71XmEXGmb+L.jpg)
![Diitao 50W×2+100W Bluetooth Power Amplifier Board with Subwoofer 2.1 Channel, 12V-24V Audio Power Amplifier Module with Treble and Bass Control for DIY Bluetooth Audio ZK-MT21, Blac - Image 2](https://m.media-amazon.com/images/I/61ycInuVKdL.jpg)
![Diitao 50W×2+100W Bluetooth Power Amplifier Board with Subwoofer 2.1 Channel, 12V-24V Audio Power Amplifier Module with Treble and Bass Control for DIY Bluetooth Audio ZK-MT21, Blac - Image 3](https://m.media-amazon.com/images/I/71JCKkEeVdL.jpg)
![Diitao 50W×2+100W Bluetooth Power Amplifier Board with Subwoofer 2.1 Channel, 12V-24V Audio Power Amplifier Module with Treble and Bass Control for DIY Bluetooth Audio ZK-MT21, Blac - Image 4](https://m.media-amazon.com/images/I/71z3nvAKyfL.jpg)
![Diitao 50W×2+100W Bluetooth Power Amplifier Board with Subwoofer 2.1 Channel, 12V-24V Audio Power Amplifier Module with Treble and Bass Control for DIY Bluetooth Audio ZK-MT21, Blac - Image 5](https://m.media-amazon.com/images/I/71kSXQXcLXL.jpg)

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*Product available on Desertcart Netherlands*
*Store origin: NL*
*Last updated: 2026-01-28*