I also have the output of my SMv2 go to the multi-channel inputs of my Marantz AVR. My SMv2 is fed from my Apt-Holman pre-amp which in turn is fed from my turntable. However, I don't know if it's possible to use the SMv2 to process feeds from my CD player, Oppo, FM, stream, etc. If it is possible, I haven't figured out how to do it!
[/QUOTE The SMv2 only has two-channel input, so your Oppo, assuming it's what you also play your SACD and DVD-A discs on, don't come into play with the SM. I also have a selector box that lets me switch 6 channel sources into my receiver's multichannel inputs. My SM, and the SACD/DVD-A player, work from that.