This is an audio power amplifier board that strengthens low-power, inaudible electronic audio signals such as the signal from radio receiver or electric guitar pickup to a level that is strong enough for driving loudspeakers or headphones. Power amplifiers make the signal audible to listeners. It is the final electronic stage in a typical audio playback chain before the signal is sent to the loudspeakers and speaker enclosures.

Specifications:

Chip: TPA3116

Audio Input: Bluetooth, USB, TF, audio input jack

Audio Format: MP3, WMA, WAV, FLAC

Output Power: 50W+50W(stereo)+100W(subwoofer)

Suitable Impedance: 4, 6, 8ohm speaker

Input Voltage: 12~26V DC

Size: 124 x 80mm / 4.88 x 3.15″