ZK-MT21 Power Amplifier Board


ZK-MT21 Power Amplifier Board (ZK-MT21 Power Amplifier Board with Bluetooth 5.0 Subwoofer 2.1 Channel 160W×2+220W=540W 15V-36V Audio Power Amplifier Module with Treble and Bass Control) emerges as a powerhouse in the audio amplification realm, combining cutting-edge technology with a robust 2.1 channel configuration. Boasting Bluetooth 5.0 connectivity and a formidable power output of 160W×2 for stereo channels and 220W for the subwoofer, totaling an impressive 540W, this audio power amplifier module promises to elevate your audio experience. In this article, we explore the features that make the ZK-MT21 a standout in the world of audio amplification.

Bluetooth 5.0 Connectivity:

At the forefront of the ZK-MT21’s features is its Bluetooth 5.0 connectivity. This advanced wireless technology ensures a seamless and stable connection with your devices. Whether you’re streaming music from your smartphone, tablet, or other Bluetooth-enabled devices, the ZK-MT21 simplifies the audio playback process, providing a wire-free and hassle-free experience. The Bluetooth 5.0 connectivity also offers an extended range, allowing users greater flexibility in device placement.

2.1 Channel Configuration:

The ZK-MT21 embraces a 2.1 channel configuration, featuring dual 160W channels for stereo output and an additional 220W channel dedicated to the subwoofer. This configuration delivers a rich and immersive audio experience, allowing users to enjoy a wide range of content, from music to movies, with enhanced depth and clarity. The dedicated subwoofer channel ensures powerful bass response, adding a cinematic quality to your audio setup.

Impressive Power Output:

With a combined power output of 540W, the ZK-MT21 is a powerhouse in the audio amplification landscape. The 160W×2 stereo channels deliver clean and dynamic sound for a captivating listening experience, while the 220W subwoofer channel adds depth and impact to the low frequencies. Whether you’re a music enthusiast, a movie buff, or a gamer, the ZK-MT21 ensures that your audio is delivered with precision and power.

Treble and Bass Control:

Customization is key in achieving the perfect audio balance, and the ZK-MT21 understands this with its treble and bass control features. Users have the flexibility to fine-tune the audio output according to their preferences, tailoring the sound profile to suit different genres or media types. This level of control enhances the overall audio experience, allowing users to create a personalized and optimized listening environment.

Wide Voltage Range:

The ZK-MT21 accommodates a wide voltage range, operating effectively with power sources ranging from 15V to 36V. This flexibility ensures compatibility with various power supplies, making the amplifier board suitable for a range of audio setups and configurations. Whether you’re integrating it into a home audio system or a DIY project, the ZK-MT21 adapts to your specific power requirements.


In the realm of audio power amplifiers, the ZK-MT21 Power Amplifier Board with Bluetooth 5.0 and 2.1 Channel Configuration stands as a testament to innovation and performance. From its impressive power output to the flexibility of Bluetooth 5.0 connectivity and the precision of treble and bass control, this amplifier module caters to the discerning audio enthusiast. Whether you’re building a customized audio setup or upgrading your existing system, the ZK-MT21 promises to deliver an immersive and powerful sonic experience that transcends expectations.

Technical Details

Product Description-

Model: ZK-MT21 Bluetooth power amplifier board


Bluetooth version: 5.0 (15m unobstructed)


Audio input: 3.5mm AUX + Bluetooth


Channel: 2.1


Input sensitivity: 500mV


Adapted power supply voltage: 12-24V/5A or more (24V is the highest voltage that the AMP can withstand, and it is recommended to use a DC power adapter within 20V.)


Speaker: 20-100W, 4-8Ohm


Output Power:

Maximum 50W R&L channel;

Maximum 100W @subwoofer


Protection mechanism: anti-reverse connection, overheating, overcurrent, short circuit protection


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 36V and 10A max current. If you use a battery pack to supply power, please make sure that the voltage after the battery is fully charged is lower than the rated voltage.

Included Accessories-

1 * Bluetooth power amplifier board

1 * DC jack

1 * Shell (upper+lower)

1 * Screwdriver

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