If theres just one thing you should know about Digital Signal Processing, (DSP) its this: It can make your car sound like a concert hall. Or a jazz club. Or even Yankee Stadium. (Or Shea Stadium — we dont care how you feel about the Yankees, we just care about making your car sound better.) The Pioneer DEQ-7600 takes the same digital technology that makes CDs sound so terrific, and uses it to broaden the possibilities of your car stereo. Not only will you gain the advantages of an on-board equalizer, youll also be able to choose among user-adjustable and preset soundfields to actually recreate different acoustic environments, right in your vehicle.