Kicker CXA360.4 4-Channel 4x90-Watt Amplifier, Dual Bass Remote, Install Kit

Kicker CXA360.4 4-Channel 4x90-Watt Class A/B Full-Range Car Audio Amplifier with Dual Bass Remote, Wiring Install Kit. Using Class A/B power, this amp features a variable bass boost with KickEQ™, giving you as much as a 6dB of extra bump.

eBay