... (Use with MP3, MP4, CD, DVD, Ipod, mobile phone, laptop, GPS, PSP) Specifications:Out put: RMS 6W ... THD=10% Frequency response: 150-18000HZ(+-3dB) Signal and Noise Ratio of Power amplifier: ≥80dB Loud ... )= 10% Frequency response: 150-1800Hz (±3dB) Signal and noise ratio of power amplifier: =80dB Loud ... CD, DVD, iPod, iPhone, GPS, PSP, mobile phone, notebook computer. High density metal shell shows noble ...