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

Package Dimensions:5.28 x 4.29 x 2.05 inches
Item Weight:6.4 ounces
ASIN:B0B5Q58VJM
Item model number:ZK MT21
Date First Available:July 4, 2022
Manufacturer:Diitao
【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!