Rockford PEQ Punch Equalization Remote for 2007 up Amps Remote wired bass/treble boost, For use with select 2007 and newer PUNCH and POWER amplifiers. 0dB to +18dB bass boost @ 45 Hz 0dB to +12dB treble boost @ 12.5 kHz Bass/Treble filtering based upon in-board amplifier crossover setting (HP-LP-AP) Includes bass knob, cable, mounting clip, mounting screws