Works voltage: +/- DC 28V

Output Power: 80W + 80W  RMS at 8ohm load

Voltage gain: +29dB

Input impedance: 18KOhm

THD+N: 0.001%---0.03% (20Hz-20KHz 5W---30W 8ohm )

Frequency response: -3dB 2Hz & 65kHz

PCB size: 94mm*138mm

NOTE: This is a Bare PCB, and all parts need to be matched by yourself.