I'm in a spot of bother here understanding how SACD works. Previously I was of the belief that if I wanted to enjoy the full range of improvements that SACD has to offer, I'd have to upgrade my amp and speakers. But now there are players like the DVPN S900V which supposedly will offer some level of improvement my existing amp/speaker set-up (as in, not upgraded), but obviously not all of it. Now, I've actually tried one of these new players, comparing a CD and SACD of the same album against each other, and I'm pretty sure I heard some level of improvement. I definitely wasn't dreaming or listening to louder playback, that's for sure. At any rate, now I'm told by some telephone-engineering colleagues that this isn't possible - that the speakers and the amp (which haven't been upgraded) would still filter out any supposed improvement. Could someone please explain if I'm actually hearing right, or if I really am imagining things?