Audio Amplifier Board Module TDA2030 TDA2030A 6-12V 18W Single Amplop (mono) Onboard TDA2030A audio power amplifier chip. Mono 18 w power amplifier circuit design. Socket onboard horn . The onboard 10 k adjustable resistance, can adjust the volume of the amplification. The onboard power light. Chip has lead to the main pin, can directly input audio signal. Output power ; max 18w Working voltage: 6 -12 v. Board size: 31.6 (mm) x23.2 (mm).