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 50W*2 (CENTER)8Ohm 25W (SURROUND)8 Ohm 20W*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)12dB (BASS)12dB AC POWER INPUT: CONTINUOU WORKING 50Hz/60Hz AV200V~235V WORKING FOR 4 HOURS 50Hz/60Hz AC235V~255V