KNACRO TPA3118 BTL 60W Mono Digital Audio Power Amplifier Board Module DC 12V-24V Amplifier chip:TPA3118 Supply voltage:8~24VDC Power:1*60W PCB Board Size: 46mm * 35mm *12.4mm / 1.8 * 1.38 * 0.49 in (L * W * H) Weight: 12g / 0.42oz