Features: Supports two inputs, one AUX input, connected towired analog signal input; Another Bluetoothcompatible 5.1 aptX high-definition wireless input that can connect to Bluetoothcompatible devices such as mobile phones and computers. Support the frequency adjustment of the subwoofer, and you can adjust the bass frequency as needed. Support the low-frequency adjustment of the left and right satellite boxes, making the output of the left and right speakers more playable; In addition, when the subwoofer is not connected, the left and right speakers can also be used. Bluetoothcompatible 5.1 adopts an imported QCC3034 high-quality Bluetoothcompatible receiver, supporting lossless Bluetoothcompatible connections for aptx, aptxll, and aptxHD. The material and plug-in capacitors are all imported products with original packaging and large capacity liquid storage. Specifications: Material:Aluminum Alloy Power supply voltage: DC12V-24V Current above 3A Power Adapter:EU/US/UK/AU Voltage socket 5.5x2.5mm, external negative and internal positive (recommended DC24V 8A) Output power left and right channels 50W+50W 4-ohm load, subwoofer 100W. 2.1 channels. The functions of the knob from right to left are: total volume adjustment, left and right channel treble adjustment, left and right channel bass adjustment, subwoofer volume adjustment, and subwoofer frequency adjustment. Note: Due to the problems of lighting effects and shooting angles, there will be certain tolerances in the product, please understand. Please allow 0-1cm error due to the manual measurment Package includes: 1 Set Digital Audio Power Amplifiers