A car audio equalizer gives you precise tone control and can fine-tune a high-end system. Improve your system by eliminating noises from unwanted sounds from your car or road with the Power Acoustik PWM 20 Car Audio Amplifier Equalizer.Featuring 2 selectable inputs so you can connect to your aftermarket system and 4 variable frequency bands with a ± 12dB parametric equalizer range this equalizer will be just what you need. Optimal control provided with independent volume & fader control and subwoofer output and level control.An integrated low pass crossover filters out unwanted frequencies your subs can t play. This equalizer also features a low noise BI-FET Op-Amp for minimum distortion and 20dB headroom with a 30V bipolar power supply.Improve your car audio and get the most out of your sound with the Power Acoustik PWM 20 Car Audio Amplifier Equalizer.