KNACRO 50W+50W TPA3116 Double Track Digital Power Amplifier Board PBTL 100W Single Channel High Power Amplifier Module PCB Board Size: 75 * 50 mm / 2.95 * 1.96 in (L * W ) Weight: g / oz Chip: TPA3116 Supply Voltage: DC 11-26V Channel Type: Double track/PBTL Single channel