Nobsound Bluetooth 4.0 TAS5613 150W+75W&times;2 High Power Class D Digital Amplifier 2.1 Channel Subwoofer Hi-Fi Power Audio Amp (Silver) This is a high power Class D 2.1 channel digital amplifier. It uses TAS5613 amplifier chip, which can offer 75W power for each channel and 150W power for your subwoofer under DC35V 4 load. Now we want to introduce you our newest preamp B07719G56B, which suits very well for this amp. It is a Bluetooth 4.0 amplifier using CSR8635 chip. It can be connected with your audio equipments wirelessly. It adopts PurePath HD technology and TI advanced closed-loop architecture, which can offer high-quality and low-distortion sound output. It would be suitable for Blue Ray home audio system, home theater, professional audio system. The power supply is not included. DC24V-32V would be recommended. Please note Bluetooth may not work under 24V.