Output Power：160W+160W Amplifier Board with Treble and Bass Control, DC 13-36V, BT and AUX Inputs, 2.0 Channel Stereo AMP Board for DIY Wireless Speakers, Password Free Treble & Bass Control: If You Are Tired of The Inherent High& Low Bass, Why Not Try The High & Low Control Knob! This Will Make You Feel Like Being In A Movie Theater.； Multiple audio input methods：The multiple input methods (Bluetooth, AUX, USB flash drive, USB sound card) allow for a wide range of devices to be connected to the amplifier board, including smartphones, laptops, tablets, and other audio sources. Safety Protection: This Amp Board Has Overheat Protection, Circuit Protection, Over-voltage and Under-voltage Protection； 7 * 24 Hours After-sales Service: Paying Attention To Customer Experience And Satisfying Customers Is Our Service Tenet. If You Have Any Questions About The Product, or The Product Has Quality Problems, Please Contact Us At Any Time, We Will Give You A 100% Satisfactory Answer. Output Power：160W+160W Amplifier Board with Treble and Bass Control, DC 13-36V, BT and AUX Inputs, 2.0 Channel Stereo AMP Board for DIY Wireless Speakers, Password Free Treble & Bass Control: If You Are Tired of The Inherent High& Low Bass, Why Not Try The High & Low Control Knob! This Will Make You Feel Like Being In A Movie Theater.； Multiple audio input methods：The multiple input methods (Bluetooth, AUX, USB flash drive, USB sound card) allow for a wide range of devices to be connected to the amplifier board, including smartphones, laptops, tablets, and other audio sources. Safety Protection: This Amp Board Has Overheat Protection, Circuit Protection, Over-voltage and Under-voltage Protection； 7 * 24 Hours After-sales Service: Paying Attention To Customer Experience And Satisfying Customers Is Our Service Tenet. If You Have Any Questions About The Product, or The Product Has Quality Problems, Please Contact Us At Any Time, We Will Give You A 100% Satisfactory Answer.