Here's what will happen after you install Pioneer's GM-X564: Your system will sound insanely clean and powerful. You will fall in love with your vehicle again, and you'll have a hard time wiping that smirk off your face. Why? This explosive 480-Watt, 4-channel amplifier features a PWM regulated MOSFET power supply, delivering efficient, big-bang power to your system. It also offers a bridgeable 2/3/4 channel capability, for flexibility with system configuration. Also, a built-in variable crossover (with separate A/B channels) allows you to tailor the sound to your car. So get used to it: life will never be the same.