Your dolby digital/dts connections are from your source component(dvd player)to your reciever/pre/pro. the connections from an amp to a pre/pro are always analog and are just for amplification of the signal, not the processing of it.
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Outlaw 950/750,Oppo 203/970 ,Definitive tech bp 7006,Definitive tech clr2500,infinity rs225 surrounds,Outlaw LFM-1 ,
Panamax 5100.