BOSS Audio 7-Band Car Stereo Equalizer Preamp Amplifier EQ w/ LED | AVA1210
It includes EQ Bands of 40Hz, 150Hz, 1khz, 20kHz with a dual 2 Ch source input. It also includes front, rear and sub outputs. Protect your system with the BOSS Audio AVA1210! Adjustable Eq Bands: Front 125hz, 500hz, 3.5khz, 12khz.