Description: Built-in TPA3116 amplifier chip. Dual output channel, the maximum output power can reach 2x100W. TPA3116D2 chip's compatibility is up to 90%. With 3.5mm audio input jack and 3-pin audio input port. Comprehensive protection: short-circuit/over-heat/over-pressure/direct current and low voltage. Specification: Material: PCB Circuit Board Size: Approx. 105x65x23mm / 4.13x2.56x0.91inch Input Voltage: DC12-24V Output Power: 2x100W Input resistance: 2x51K Frequency Range:14-100Kz SNR: 100db Package Includes: 1 Piece TPA311D2 Dual Track Digital Audio Amplifier Board Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement