Model: --2C070 : 92dB Input mode: AUX Channels:2.0 Channel Amplifier Chip: TPA3116 Power Supply: DC12V Adapter Horn: 4-8 Output Power:70Wx2 Note:1.The higher the voltage, the louder the sound. Please give up this misconception. Only the right power supply and the right speakers can produce perfect sound. 2.There is a boost circuit inside the product, which only requires DC12V voltage. A 5V voltage output port is reserved. 3.Our power amplifier input generally requires 1.5V-2V. If your decoding output is 500mV-1V, that is not enough. Even if your power supply and speaker are adapted, the power amplifier output cannot reach 70Wx2. 4.32Pin TPA3116 power amplifier chip. Colour:Green Material:ABS Package Contents: 1 x Audio Amplifier Board Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.