I have a Sony STR-VA555ES running with large speakers so no subwoofer. SACD and DVD-A are analog only out into the 5.1 input on the amp, now to listen to that input you have to switch the amp to analog direct which bypasses all DSP, you can't even adjust the bass. Is there a solution to get the signal in so I can adjust bass levels etc? I know I can switch to stereo output on the DVD player but thats obvoiusly not as good as the 5.1 output. Any suggestions out there?