I've confirmed this beyond a doubt now. I've used the Chesky disc and have seen my Samson light up while playing 4.0 tracks. It also works in stereo mode. The player has bass management controls separate controls for SACD and those appear to work fine. In stereo mode the subs are active, I can't confirm that it works for SACD beyond a shadow of a doubt, but I have no reason to think it doesn't. Bass management also works for CD. I could've sworn I read elsewhere it doesn't, but sure enough, it does. The only problem is like many other DVD-Audio players it suffers from the low LFE problem on DD. This makes calibrating difficult. I'll be using the Chesky disc this weekend to set all the levels in the player and I'll report on that when I'm through. I don't have a way to properly calibrate SACD though, so I'll see what I can figure out with some more experimentation. I'll be writing up a full review later on in another thread. I just wanted to mention that bass management works because there's been so much controversy on these universal players.