Total power output :RMS 12W 2 (DRC ON) Signal to noise ratio : ?85 dBA Amplifier distortion :0.5% Input sensitivity : PC: 700mV ± 50mV AUX: 550mV ± 50mV Frequency response : 75Hz ~ 18KHz (+/-9dB) Bass driver : 4 inch (116mm) Treble driver : ½ inch (13mm)