7 equalization bands (50Hz, 125Hz, 315Hz, 750Hz, 2.2KHz, 6kHz, 16kHz), each frequency is adjustable from -12 to + 12dB (-15 to +15dB for subwoofer frequencies) Active gain Pre-amp with adjustable input sensitivity Master volume control with up to 8 volts RMS of output Individual left and right sensitivity controls Three stereo RCA output to drive front, rear, subwoofer It comes with Subwoofer Level Control Subwoofer frequency select switch 60Hz / 90Hz Also come with Night illumination design. 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 8-band stereo equalizer / crossover specifically created for the mobile environment. It provides powerful features in a compact size