I am fairly sure it is in the specs, (what are they calling it, scarletbook?) that all SACDs are required to have a 2 channel mix. The multichannel and hybrid are optional.
I don't know of any DVD-A that include 2 channel mixes, but then again, I dont own any.
I don't know of any DVD-A that include 2 channel mixes, but then again, I dont own any.