Differences in SACD channels


I noticed that when playing two channel SACDs through a
two channel system sounds better than playing a 5.1
channel SACD through a two channel system. HOWEVER, I just started collecting SACDs and my SACD player is not near top of the line(sony DVP-NS915V). Mind you that I only own one 5.1 SACD, I do not want to continue to purchase the 5.1 format if I cannot retrive the same information that the two channel contains.
Any Thoughts ?
surfgod
Good point by Sogood51. You do need to select the stereo mode if you want to play a multichannel disc that way. If you don't do this you may be listening to only two of the five signals. Although the rear channels might be considered a minor loss (for many discs) the center front usually carries a lot of signal, and it's loss would be serious.
Buddy

I believe you have, but please let me ask for the question again...........Have you checked if your SACDP has capability to read Multi-Channel disc or not? If so, you need to switch the MC mode to Stereo mode when play back at Stereo system. Otherwise you can only hear 2 our of 5.1 channels sonic performance only.
Thank you all very much your information was very helpful. I just recieved the new Absolute Sound & it has an
article about new digital formats. Asking you guys is easier & more informative.