LJ, thanks for responding. I was hoping you would and give your take on Gumby and Yggy. Good to hear from someone who has actual lengthy experience with them. I don't have the NAD M51. It's the NAD d1050 that I have, hence I'm looking for an upgrade. I think you have just convince me to go for Gumby. Don't think I need the Yggy. Based on your info on Mike Moffat's impending DDC, I might just hold off on those gadgets and use plain vanilla USB straight from the iMac or PC. I was toying about buying the Schiit Wyred or even the Singxer SU-1 but I will now wait and see what new DDC Schiit will produce.