Product Highlights: We upgrade our car’s audio stereo systems so that we can get the best sound. Aftermarket components have advanced features that allow us to enjoy an enhanced sound quality of our favorite music. This difference is primarily due to the higher quality materials used to make each component of the audio system. For those who enjoy quality music during a drive, you know that upgrading your car stereo and speakers is not enough. A car equalizer allows you to tailor the sound to what you like for that perfect audio experience.The function of a car equalizer is to adjust the audio input signals to achieve optimal sound quality. There are varying types of equalizers depending on the number of audio bands each change. The more the controls the more detailed your audio customization will be. If you’re a person fed up with a low-quality audio player, then a car equalizer may be just what you need. Selecting a good one, however, makes all the difference between mediocre sound and an audio party in your car. This equalizer is a 7-band stereo equalizer / crossover specifically created for the mobile environment. It provides powerful features in a compact size: - Seven equalization bands (50Hz, 125Hz, 315Hz, 750Hz, 2.2kHz, 6kHz, and 12kHz), each frequency is adjustable from -12 to + 12dB (-15 to +15dB for subwoofer frequencies) - Subwoofer output uses a built-in 43-120Hz, 60-200Hz - Three stereo RCA outputs to drive front, rear, and subwoofer audio amplifiers - An auxiliary stereo RCA input for use with portable devices, such as an MP3 Player or DVD player - Separate controls for master volume, subwoofer volume (sub level), front/rear fader, and selection of main or auxiliary inputs - RCA connectors to ensure the best audio signal output - ISO mounting holes and removable trim ring for custom installation