Real Marine™ The KICKER Real Marine standard means your amplifier is purpose-built for your boat. Every KXMA (and KMA)-Series amp comes complete with anti-corrosive speaker, power and RCA terminals, stainless-steel screws, conformal-coated circuit boards and ABYC/NMMA-compliant power connections. KICKER products also undergo rigorous testing to ensure they meet or exceed marine industry standards for UV, humidity and saltwater exposure. This unparalleled commitment to engineering quality and maritime safety is why our products truly are "Real Marine." KXMA800.4 Marine Amplifier Gain, crossover and bass-boost controls are protected behind a gasket-sealed panel, as is the control cover hiding the settings, creating a water-resistant barrier to key controls. KickEQ™ delivers as much as an 6dB of extra bump with a simple turn of the knob. A powerful 24dB crossover is also included, letting you quickly tune your system to perfection. A full-range RCA output allows you to easily add another amplifier without running new signal cable to your KICKER KMC Media Center. Class D Amplifier Gain Control With "Gain Match" LED Indicator FIT2™ (Fail-safe Integration Technology) Circuitry Variable 24dB Crossover DSP-Controlled Preamp KickEQ™ 6dB Variable Bass Boost ABYC/NMMA-Compliant Power Terminals Conformal-Coated Circuit Boards Easy Access to Settings behind Gasket-Sealed Cover Panel Black Anodized Aluminum Chassis Top-Mounted, Teal LED Light Pipe Stainless-Steel Mounting Hardware Included Want setup help? Go to KICKER U for a free woofer-and-amp configuration app! This KXMA amplifier delivers as much as 200 watts into four full-range channels, or 400 watts into two sets of bridged channels. See below for more details.