2x400w - 2 ohm2x275w - 4 ohm2x175w - 8 ohmUltra-low-noise/ low-distortion designFast Recovery circuitry reduces distortion at the edge of clipping and beyondTwo 2nd order, 12dB/octave, Bessel low-cut filters with variable frequency from Off to 170Hz help optimize bass output of your sound systemCons..