300 x 4 MAX + 600 X 1 @ 2 Ohms210 x 4 RMS + 420 X 1 @ 2 Ohms420 x 2 RMS @ 4 Ohms1800 WATTS MAX3 X 25 AMP FUSERemote bass knob MOSFET Power Bridgeable Trimode Operation Hi/Low Level Inputs Variable Bass Boost Hi/Low Pass CrossoverDimensions (WxHxL) 10" x 2¼" x 18"