Usage Tips:: 92dBInput mode: AUXChannels:Dual ChannelAmplifier Chip: TPA3118 ( Chip)Power Supply: DC12~24VNote: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.The power supply and speakers determine the output power of the amplifier. 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 2*30W.4. 32Pin TPA3118 power amplifier chip.Adapter Horn: 4~8ΩOutput Power:2*30WColour:GreenMaterial:ABSPackage Contents:1 x Digital Stereo Audio Amplifier BoardOnly 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.