Features: With two inputs, oneAUX input facilitates the connection to traditional corded analogsignal inputs; There is also a Bluetoothcompatible wireless input, which can easily connect to Bluetoothcompatible devices such as mobile phones and computers without being constrained by wires, making it easy to enjoy music Added bass frequency adjustment for the left and right satellite speakers, making the output of the left and right speakers moreplayable; Adopts two TI chips, one for left and right output, and the other for bass output. The Bluetoothcompatible part adopts imported QCC3034 5.0Bluetoothcompatible reception, supportingAAC AptxHD audioformats. Multiple NE5532 operational amplifiers are used internally, of which three can be plugged andunplugged, making it convenient for customers to replace different styles of operational amplifiers and adding some playabilityto the players, Super large heat sink, providing guaranteefor long-term highpower and stable operation Specifications: Item: BT5.0 Power Amplifier Power supply voltage: DC12V-24V Voltage socket 5.5x2.5 external negative and internal negative positive Output impedance4-8Ω, output power left and right channels 50w+50w, bass 100W Frequency response: 20-20KHz 11 Size: approx 123x132x32mm) Single unit weight is approximately 568 Package Includes: 1Set Power Amplifier note: Do not use cheap audiosignal cablesworth 2-5yuan. Those cablesdo not come with shielding and may introduce high-frequency noise. The larger the potentiometer rotates, the louder the noise will become The correct order of use is to first connect the laptop power supply and the power interfaces of the amplifier, and then connect the laptop power supply to the mains.