... system for iPod,MP3,MP4,MP5,PC,Laptop/Notebook,Mobile phone,etc...all kinds of digital player devices. Features: 1) 2.0 speaker ... for laptop, computer,mp3,mp4,mp5 palyer,CD,mobile phone. 2) Carry-home, plug and play ... *2(1KHZ,THD10%)2) Rated Impedance:4Ω3) Circuit Current:≤800mA4) Frequency Response: 2000HZ——12KHZ5) Supply Voltage Rejection:≥48dB 6) Powered by PC ...