Without going into the science, I will just say that I have owned two multi-channel SACD players, but have used them both exclusively for two channel listening and they have both sounded great in two channel.
When it is said that a SACD player is multi-channel, it means it means it
can play in both two-channel AND Multi-channel. When it is said that a
SACD player is Two-Channel, it means it doesn't have multi-channel
capability. Personally, I think some multi-channel SACD players sound
better in Stereo than in multi-channel, but since I have a strong preference for two-channels when it comes to music -- I am probably
too biased in that regard to render an objective opinion.
When it is said that a SACD player is multi-channel, it means it means it
can play in both two-channel AND Multi-channel. When it is said that a
SACD player is Two-Channel, it means it doesn't have multi-channel
capability. Personally, I think some multi-channel SACD players sound
better in Stereo than in multi-channel, but since I have a strong preference for two-channels when it comes to music -- I am probably
too biased in that regard to render an objective opinion.