Used approx. 6 months. Was mounted under rear seat in 09 Avalanche, was never touched...mint condition. This is necessary to add additional aftermarket speakers/subwoofers to factory system while maintaining all factory functions like steering wheel controls. Add a JL sub box and amp to my factory BOSE system and it worked perfectly. Traded the truck so I took this out first.
AudioControl 2 channels of active speaker level inputs
Accepts 400 watt signals per channel
Features AccuBASS processing for correction of bass roll-off
Fixed and variable outputs with discrete level controls