The Boss Monoblock Amp utilizes full-range circuitry that maximizes efficiency while providing the highest quality of sound reproduction. Compact and powerful  this 2500W Class D Monoblock Amp is made for today"s music enthusiast. The Boss Mono Amplifier features cariable low pass crossover and variable subsonic filter. With variable gain control and input voltage sensitivity selector, the Boss Monoblock Amp delivers high-quality sound without distortion. This 2500W Class D Monoblock Amp is strapping capable and it comes with protection LEDs. The Boss Monoblock Amp measures 10.25" long x 6" wide x 1.9" high. Boss DST2500D 2500W Class D Monoblock Amp: * MOSFET power supply * Variable low pass crossover * Variable subsonic filter * Variable bass boost 0 to +18dB * Phase Selector: 0 or 180 degrees * Variable gain control * Input voltage sensitivity selector * Chrome plated RCA inputs * Line outs (for systems building) * Strapping capable * Power and protection LEDs