This is good info., & could be a solution enabling me to buy a DM7 as I need a Mch DAC simply for Mch music (DSD), but my old Denon receiver, has only RCA analogue inputs and no HDMI nor XLR. But I'd need a minimum of 10 boards for 5ch, not sure if I need 2 more for LFE as I don't use a Sub...