New- QPX6000.1D 1x6000 Watt at 1 Ohm Class D Monoblock Amplifier Equipped with a built in variable low pass crossover network allowing you to select the crossover function and frequency for each the front channels or rear channels of the amplifier independently. Class D Monoblock Amplifier 1 Ohm Stable capability Amber-Glow Logo Badge Audiophile Grade Components Speaker Short Circuit Protection High Efficiency Mosfet Design 12 dB Variable Low Pass X-over 12 dB Variable Bass Boost 12 dB Variable Subsonic Filter 15Hz ~ 55Hz Variable Phase Shift Double Sided PCB Q Link Master/ Slave Technology @ 2 Ohm Bass Remote Included