Adding to Ncarv's post, the EMM Labs (Meitner) DAC has a proprietary interface that can only be used with the EMM Labs transport. Another company with its own proprietary interface is dCS, its DACS will decode an SACD signal but only through a proprietary link with their transports, and I believe Accuphase also had such a link on at least its early SACD transport/DAC combinations. I have heard of the HDMI links, but don't know much about them--if he's looking, maybe Kal (Kr4) can help on that. The Benchmark and Cambridge DACs you mention will not decode an SACD signal, only a pcm signal.
