7 Adjustable Bands: Chassis graphic equalizer with built in low pass filter, 7‑band graphic equalizer (50Hz, 125Hz, 315Hz, 750Hz, 2.2KHz, 6KHz, 12KHz).2. Car Audio Equalizer, Low Pass 7 Band Car Graphic Equalizer High Level Input EQ with CD AUX Input and Rear Front SUB Output for Stereo System, 8B61735SGY.
eBay