Crunch Ground Pounder GPV1000.4 500 Maxx Watt Power A/B Class Four Channel Amplifier (Silver) 4 x 125 W at 4 Ohms, 4 x 250 W at 2 Ohms, 2 x 500 W at 4 Ohms Maxx Power Twin-Coil Isolation Design with Fully Adjustable Crossovers that Include 24 dB Low-Pass and 24 dB Subsonic Filter; Bass Thrust with Variable Bass Equalization RCA Line Outputs Include Amplifier Daisy-Chaining and 4 to 0 Gauge Power Connectors Twin-Turbo MOSFET Exponential Variable-Power Supply High-Current Power Supplies and High-Speed MOSFET Outputs 30th Anniversary Edition with Blue Halo Illuminated Crunch Logo and Selector Switch for Choice of Fixed Illumination or Scrolling Illuminating V-Inch