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OUT PUT：RMS 4W（2W+2W）THD=10%
SIGNAL NOISE RATIO：≥80dB
POWER SUPPLY:DC 9V/1000mA
POWER SUPPLY：4*7#BATTERY,DC9V/1000m APOWER,USB CABLE POWER SUPPLY
Different model have different adapor&hole as Ipod Nano, Ipod video,Ipod shuffle
Compatible with MP3,MP4,CD,Moble phone etc..