Alpine - S-Series Class D Digital Mono Amplifier with Variable Low-Pass Crossover - Black

KICKER - PXA-Series 500W Class D Mono Amplifier with Selectable Low-Pass Crossover - Black

Pioneer - GM 500W Class AB Bridgeable 2-Channel Amplifier with Low-Pass Crossover - Red/Black

KICKER - KX Series Class D Bridgeable Multichannel Amplifier with Variable Crossovers - Black

Alpine - S-Series 12" Dual-Voice-Coil 4-ohm Subwoofer - Black

Alpine - R-Series 6-1/2" 2-Way Car Speakers with Carbon Fiber Reinforced Polypropylene Cones (Pair) - Black