I put a DSP together with amp with the EX's non-premium radio and I can't handle the poor quality. Wish to install a single DIN Pioneer but don't want to lose the iMID song display and bluetooth. So I am thinking to get the premium audio in my EX to get the differential balanced signal directly to JL HD600/4. I have no plan to change the face of the radio though. Wondering if this will work. Thanks~!