Well starting over is part of the fun. I changed a few things and went back to a strictly 2 channel system. Changed the room (house) and am very happy once again. Only change on the horizon is to run proper power for the Krells. I'll run 2 dedicated 30amp lines and use the NEMA 5-30 twist locks to connect them in. I'll run dedicated lines for the EMM gear at the same time too.
We have similar systems. I had the EMM DCC2 SE in the past and found it sounded much better driving a high end preamp than driving a power amp directly. Cheers,