... well suitable for Laptop, PC, MP4, MP3, PDA, Home Theater, Portable Audio Player, Mobile Phone.Description:The portable laptop USB ... utilize the advanced technology with class-D digital power amplifier, able to perform high efficiency, low distortion-rate ... 6V Power supplySuitable for Laptop, PC, MP4, MP3, PDA, Home Theater, subwoofer speaker ,Portable Audio Player, Mobile PhoneSNR: 65db, Isolated ...