I would hate to say i was in the same boat with a
Sony STR-DB940 multichannel amp using the pre outs to a real amp and I have to say the sony preouts are the biggest Piece of S#$T. IF anything get a good integrated and a speaker switch for your mains and use that for stereo only and switch to the sony for HT. You will be much Happier for
the same cost. You can use analog(rca) output to the integrated and digital to the sony.
Just my two cents worth.