Delaktivsystemadapter Audi/VW/Seat/skoda Half Active System Adapter All Audi / Seat / Skoda / VW with Quadlock Audi - all models with Quadlock Seat - all models with Quadlock Skoda - all models with Quadlock VW - all models with Quadlock Quadlock -& ISO Connection to Half Active System on RCA plugs (Not applicable for BOSE sound systems or DSP)