QuoteI admit that I am lazy, but which of these decks has either optical or coax digital inputs?
As Willett said all of the SD, as well as the DR-100 mkII, PMD661/671, PCM D50 (and I think D1 too), HD-P2, R-44, DR-680. I don't know about Sonosax and Nagra but it would surprise me if they didn't.
The Edirol R-4 Pro is missing from the list (it too has digital in by the way).