Kenwoods Excelon X301-4 amplifier can dish out 50 watts RMS each to four speakers, yet still fit almost anywhere in your vehicle. For applications that require more power, you can bridge the amp to 2-channel mode to drive a pair of speakers or components with 150 watts RMS each. In 3-channel mode, you can use the amp's front channels to drive a pair of speakers with 50 watts each, and bridge the rear channels to send 150 watts to a sub..
High-and low-pass filters let you optimize the sound for your vehicle and speakers. When you're running a subwoofer with the rear channels, you can adjust a bass boost to get just the right thump to fit your musical tastes. The X301-4 even accepts input signals via RCA cables from an aftermarket receiver or by way of your vehicle's speaker wires, so it will work with almost any mobile audio system.