JL Audio XDM Car and Marine Amplifier - With NexD technology, XDM amplifiers achieve total amplifier efficiencies exceeding 80%. This results in reduced energy use, making them much kinder to your electrical system. Exclusive dual-mode input filter and differential-balanced inputs; Advanced switching technology for exceptional efficiency reduces current draw and heat, permitting reliable high-power output from a compact and easy-to-install chassis.; Sealed security cover; Audiophile-grade signal processing with fully variable filters and calibrated potentiometers.; Innovative circuit design ensures the amplifier will never shut down due to thermal overload and keeps the music playing, even under the most demanding conditions.; The all-aluminum, powder-coated housing inhibits corrosion, and a sealed security cover protects controls from the elements.; Includes: XDM amplifier; 2.5 mm Allen wrench; JL Audio badge;