1/2 DIN 7-band Graphic Equalizer / 8v Line Driver / auxiliary inputs</br>6-Channel 7 Volt RCA Outputs (Front / Rear / Subwoofer)</br>Master Volume Level Control. Adjustable Subwoofer Level Control</br>2-Channel RCA AUX Input with Adjustable Gain / Selectable 12dB Low-Pass Crossover (60Hz or 90Hz)</br>Gold Plated Terminals</br></br>Product Description</br></br>The Massive EQ7 is a 7 band graphic EQ that will correct peaks and dips in sound characteristics associated with most vehicles interior that dampens and limits both speaker output and imaging. This unit also has a switch to change the LED color from red to blue depending on the interior of the vehicle.</br><br/>http://www.amazon.com/gp/product/B0044I0AY0