I know nothing in electronics, but DDRC-88 adds a A\D\A step in the chain isn't it? And nanoAvr-dl added something (filters) in the hdmi chain, right?
Maybe there is a way to do all (dirac eq nd bass management) with dolby decoder in the hdmi chain. Don't shoot if all this is heretique thoughts in electronics!
My system 5.1 :ROTEL RSX-1562 /Fronts: B & W 804 D2; surround : B&W 704 and center B&W HTM4d2 /sub SVS PC 2000 / TV Samsung UN55ES8000
/BD player Cambridge CXU/ set-top (cable box) rented from cable co. PEQ by nanoAvr-DL Dirac Live between CXU and receiver
Bis Audio cables and power bar from the wall to the receiver
My room:15'4" x 11' 6" x 7'6" tv near the center of the long side wall