Kicker KXMA800.4 4x200w 4-Ch Full-Range Class-D Marine Amplifier - 48KXMA8004 Kicker gives you a full suite of purpose-built KXMA-Series Marine Amplifiers, all built to deliver the volume and clarity you need on the water. Following Kicker Real Marine protocol, power terminals meet stringent ABYC/NMMA standards, while thick gasketing protects the control cover from unwanted moisture. Even the aluminum chassis is UV-treated for extra-long life. All Kicker marine amplifiers also utilize conformal-coated circuit boards to protect the heart of the amp from water damage. Get the absolute most out of your amp with a specially designed gain control that lights up when the perfect input signal is detected from your radio. Features - Conformal-Coated Circuit Boards to Repel Moisture 316L Stainless-Steel, No-Rust Hardware Small Footprint to Tuck Out of the Way 0-6dB Variable Bass Boost Marine-Compliant Terminals Built-In Variable Crossovers for Precise Speaker Performance Matching Designed to Add Extra Intensity to a Large System, or Power HighEnd Tower Speakers Marine Environment Ready Highly Efficient Class D Technology Superior Sound Quality and Added Power Specifications - Power [watts/ch] 2 Ohm Stereo: 200x4 Power [watts/ch] 4 Ohm Stereo: 100x4 Power [watts/ch] 4 Ohm Bridged Mono: 400x2 Dynamic Power [watts] 1100 Frequency Response [Hz]: 10-20k Crossover: OFF/HP/LP [amp 1], variable 10-5kHz w/ 10x switch; OFF/HP/LP/BP [amp 2], variable HP 10-500Hz; variable LP 40-5kHz w/ 10x switch; 24dB/octave KickEQ Bass Boost: variable 0-6dB @ 40Hz Dimensions: H – 2-1/8, 5.5; W – 8-5/16, 21; L - 11-9/16, 29.4