TPA3116D2 Dual-channel Stereo Digital Audio Power Amplifier Board 2*120W D Class Feature: Onboard front IC, improve input sensitivity, hd sound quality. Efficient Class D operation with > 90% power efficiency and low idle loss characteristics, advanced modulation system configuration, multiple switching frequencies, AM interference prevention. TPA3116D2 advanced oscillator /PLL circuit adopts multiple open-circuit frequency options to suppress AM interference, and multiple devices can be synchronized when using master-slave mode options. The TPA3116D2 device provides comprehensive protection against short circuit, overheat, overvoltage, undervoltage and DC faults. In the case of overload, the device reports the failure to the processor to prevent itself from being damaged. Specification: Model: XH-M543 Chip type: TPA3116D2 Supply voltage: DC12-26V Output power: maximum 120W*2 SNR: 100dB Channel number: two-channel stereo Size: 92*69*16mm/3.6X2.7X0.93in Note: Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you! Please allow 1-2cm measuring deviation due to manual measurement. Package  Included: 1 x XHM543 Amplifier  1 x Audio Cable