Features of R7EQ: Rockville R7EQ 1/2 Din 7 Band Car Audio Equalizer EQ w/ Front, Rear + Sub Output, Includes mounting brackets and screws for easy installation, 7 adjustable bands of equalization (50Hz,125Hz,315Hz,750Hz,2.2KHz,6KHz and 12KHz), Each band is adjustable from -18dB to +18dB, Adjustable subwoofer frequency from 40Hz to 250Hz.
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