Rockville dB14 Mono Car Amplifier, 4000W, Class-D, Dyno-Certified, Subsonic Filter, EQ, Crossover, Bass Remote, Perfect for Subwoofers, and Car Audio
STINGER Audio MT-1000.5 1200 Watt RMS 5-Channel Car Audio Amplifier, Class D, Hexfet Mosfet, Crossover High-Pass/Low-Pass Filter, Subsonic Filter, Remote Subwoofer Bass Knob, Bass Boost Q
MTX THUNDER1000.1 Class D 1000 Watt RMS Mono Block Compact Vehicle Stereo Sound System Amplifier w/Selectable Bass Boost, & Variable Subsonic Filter