The EQL7 is a 7-band graphic equalizer that allows you to dial in your system for peak performance. This pre-amp/equalizer is a half-din frame so it doesn't take up all of the valuable space in the front of your vehicle. It also features an AUX input and blue LED backlights so it's easy to see and adjust your settings in any lighting condition. This equalizer also comes with a remote subwoofer control. For more features and specifications, see below.