100 Watts RMS into 4 Ohms internal power amplifier.5 channels with 4 low noise microphone and 1 stereo inputs.Tone, reverb and gain control on each microphone channels.Line Out for connection to external amplifiers.RF interference protection on all inputs.Dimensions (HxWxD): 5.75'' (146mm) x 19.4375'' (494mm) x 9.5'' (241mmWeight: 18 lbs (8.2 kg)