7-Band Graphic Equalizer 6-Channel / 7 Volt RCA Outputs (Front/Rear/Subwoofer);Adjustable Master Volume Level Control Adjustable Subwoofer Level Control;2-Channel RCA AUX Input with Adjustable Gain Selectable 12dB Low-Pass Crossover (60Hz or 90Hz);Gold Plated Terminals Dimensions:7(W) ﾃδ 1(H) ﾃδ 4(D);This unit is exclusively for vehicles with a negative ground, 12V battery system.