Power socket:AV 220V out,The machine has 3 position power socket,it can supply electric power for other audio equipment VCD.LD.ect. [NOTICE:The max output power of the power socket is 200W] TECHNICAL SPECIFICATION MAX OUTPUT POWER:(MASTER) 4 OHM 80W*2 S/N: (STEREO) 88dB FREQUENCY RESPONSE: 20Hz~20KHz +/-1.5dB T.H.D: <0.1% INPUT SENSITIVITY:VCD/CD.DVD.TAPE.TUNER700mv PPI<2.5V TONE CONFINE:(TREBLE) ?2dB (BASS) ?2dB AC POWER INPUT: CONTINUOU WORKING 50Hz/60Hz AV200V~235V WORKING FOR 4 HOURS 50Hz/60Hz AC235V~255V