Alpine MRP-T222 2ch Amplifier. NEW 2006/2007 RangeBuilt-in crossoverIn multi-speaker systems, it is important to make sure each speaker is sent only those frequencies it is designed to reproduce. This built-in crossover removes overlapping frequencies, ensuring greater efficiency, less strain—and a louder, cleaner sound.Non-fading PreoutsThe four-channel amp has independent RCA inputs for each channel. Internally, these are summed for the right and left signals to provide non-fading outputs for applications such as a separate subwoofer amp.DC-DC Converter power supplyThe power supply uses MOSFET circuitry to convert battery voltage to the voltages needed for high amplification. The result is higher power and much wider dynamic range.Speaker-level inputsThese terminals allow direct connection to factoryinstalled head units that don’t have preamp outputs, letting you add subwoofers to any system.Adjustable Bass EQThis processing circuit provides optimum low frequency response, letting you adjust the bass for maximum clarity.V-Power High-grade ComponentsThe rugged, road-worthy V-Power amplifiers deliver exceptionally high performance and provide detailed control. Available in mono, two-channel and four-channel configurations, these amps are as powerful as they are versatile.