Sony XM-4060GTX Car Audio Amplifier

"Keep the power flowing to your system with this Sony 4-channel amplifier. This flexible amp lets you power four component speakers or a combination of speakers and subs by bridging the rear channels. Speaker level and pre-amp inputs let you integrate the amp into your audio system easily, while the high pass and low pass crossovers reduce distortion by sending the frequencies to the right speakers. It even has a bass boost to add a little extra punch when you need it."