Tom Lyle wrote an excellent review on enjoythemusic.com on the Luxman C-700u Control Amplifier and the Luxman D-06u CD / SACD Player with USB Input.
“The sonic prowess of the Luxman C-700u was evident from the first day I had it my system…when judged against others in its price range potential owners of a C-700u control amplifier can rest easy, because as far as I’m concerned it has little competition at its price, and quite beyond its price.”
“Spoiler alert: if one decides to purchase a Luxman D-06u, it will likely take up residence in your system for quite some time. In the long run, limiting oneself to only one type of digital input might end up being foolish.”