THX certificated Class D amplifier (210mm) 8” subwoofer driver DSP digital Volume control on the satellite Power Output : RMS 35W x 2 + 130W Signal to noise ratio : R/L:84dB(A) sw:80db Frequency response : 40Hz-20KHz Input sensitivity : Line 1: R/L: 600 ±50mV SW: 1300 ±mV Line 2: R/L: 800 ±50mV SW: 1700 ±mV AUX: R/L: 550 ±50mV SW: 1200 ±mV Opt/Coax: R/L: 350 ±50mV SW: 750 ±mV Input type : Optical, Coaxial, Line in, AUX Midrange & bass unit : 8” (210mm) Treble unit : 2 3/4 inches(70mm)