Output power RMS – @ 4 Ohms4 x 275 Watts – @ 2 Ohms4 x 280 Watts – @ 1 Ohm4 x 285 Watts – bridged @ 4 Ohms2 x 550 Watts – bridged @ 2 Ohms2 x 560 Watts Amplifier technologyClass AB Inputs4 x Cinch 2 x Optical SPDIF (12 – 96 kHz) 1 x Remote In Input sensitivityRCA / Cinch 1.0 – 8.0 Volts Input impedance RCA / Cinch10 kOhms Outputs4 x Speaker output Signal converter for digital inputBurrBrown 24 Bit DA converter Frequency response10 Hz – 80 kHz Signal-to-noise ratio digital input 110 dB (A-weighted) Signal-to-noise ratio analog input 110 dB (A-weighted) Distortion (THD) 0.001 % Damping factor 1000 Operating voltage9 – 16 Volts Idle current8.5 A Fuse6 x 25 A LP-Mini-fuse (APS) Additional features:Colour Protection System, BRAX Power Stabilizer connector Dimensions (H x W x D)79 x 360 x 360 mm Net weight11.5 kg.