Feature●DS18’s ZR series of amplifiers are guaranteed to supercharge your subwoofers to deliver brilliant sound and bulky bass frequencies●The ZR series car audio amplifier was designed to pump up the bass and help your subwoofers reach their maximum potential as a part of your sound system●These amps offer a surplus of tuning options: the ZR800.4D comes with Lowpass, Highpass to help tune any song to your frequency●The knob for frequency adjustment will help you attenuate your bass with a quick turn of the dial to tune in your bass volume with every song you play●The ZR800.4D car audio amp is made to deliver 600 watts RMS @ 4-Ohm Bridge, 320 watts RMS @ 2-Ohms, and 200 watts RMS @ 4 ohms giving you the perfect power for your bassDescription