Features: 160W+160W 2.0 channel power amplifier is easy to change, you can install and use it conveniently with wide compatibility. Supports reverse connection protections, overvoltage protections, undervoltage protections, overheating protections, and short circuit protections Equipped with volume control and power switches, it is very suitable for making passive speakers and home audio systems by oneself It uses copperDC connectors and barrier terminals. It can withstand high currents without generating heat or damaging wires Large area heat dissipation system, good quality module, which will not overheating and stop working during long-term high output Specifications: Item: ZK-1602T 2.0 Channel Audio Amplifier Color: Black Size: approx 13.4x8x2.8cm/5.28x3.15x1.1in Bluetoothcompatible version: BT5.0 Chip：TDA7498E Audio input: AUXand Bluetoothcompatible+USB Channel: 2.0 Power: DC15-36V (under-voltage protections below9V,Canalsosupport12Vpowersupply) Adapter speaker: 30-200W, 4-8Ω Output power: 160W+160W Package Includes: 1Set 160W+160W 2.0CH Power Amplifier Board (the case needs to assemble) 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.