KICKER amplifiers have always ruled the winner's circle at car audio competitions because they combine remarkably advanced design with the highest-grade electronic components for the ultimate combination of sound quality and brute power. Beneath the exciting new ZX series exterior lies internals that have been designed from the ground up to deliver tight, clean power. An unregulated Class A/B power supply allows the amplifier to really pour on the power in 2-ohm operation. All this power is at your command with a built-in crossover, high- and low-level inputs, and subsonic filter to help protect your subs. Fast-acting protection circuitry guards against short-circuits, over-voltage, overheating, or wiring mishaps.