I typically only hear real differences not between remastered versions of 16/44.1 albums, but remixed. The original mixing equipment used was more primitive for a lot of these digital records, and remixing makes the real difference, not remastering. Whether it be stereo or 5.1.I was just alluding to the fact that 16/44.1 DDD PCM masters can sound excellent when remastered to a hi res format! Analogue Productions' prooved this with three of their Stereo SACDs remastered from 16/44.1 DDD PCM sources [Cowboy Junkies' TRINTY SESSIONS, Nils Lofgren LIVE and bassist Rob Wasserman's DUETS].
Remastering can certainly have improvements but I don't see the use of buying SACDs of 16/44.1 albums if they aren't going to be remixed. IDK I feel like I can replicate whatever EQ curve they're probably going to use at home.