High-Performance Amplifier: Experience superior audio quality with the -MT21, featuring a 2.1 channel configuration that delivers a powerful 50W x 2 + 100W output. Ideal for audiophiles seeking rich, dynamic sound. Advanced Bluetooth 5.0 Technology: Stream your audio seamlessly with the latest Bluetooth 5.0 technology. This amplifier board ensures stable and fast wireless connections with a wide range of devices. Enhanced Bass Control: Tailor your listening experience with adjustable bass settings. This amplifier provides deep, thumping bass, perfect for enhancing your home theater or audio projects. Versatile Usage: Suitable for various audio applications, from DIY projects to home audio systems and more. Its robust design ensures durability and consistent performance.<br><br>Bluetooth version: 5.0 (unobstructed, 15 meters) Input sensitivity: 500mV Input method: AUX+Bluetooth Number of channels: 2.1 channels Applicable speakers: 20-100W, 4-8Ω Protection mechanism: anti-reverse connection, overheating, overcurrent, short circuit protection Applicable power supply: DC12-24V/5A or above (cannot be connected to 24V battery pack) Output power: left and right channels Less than 50W, subwoofer Less than 100W Due to different batches, there may be differences in product appearance and printed text, which not affect use Colour:Black Material:plastic<br><br>Package Contents: 1 x Subwoofer Amplifier Board<br><br>Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.