I just added a DVD player Denon model 2800, which is formatted for HDCD. It replaces my Denon 20 bit Cd player, which I used for over 20 years. It was a very fine Cd player but is getting old and has had a couple problems over the years. One dirty pot, simple fix and most recently the Cd tray often closes immediately upon opening. Annoying but other than that, it's been fine.
I was noticing that several of my latest Cd purchases have been HDCD's. I thought most of them sounded very good on the old 20 bit Denon but maybe not better than other Cd's that had been well recorded. Adding the HDCD player to the system changed that. They are really very very good and now getting very close to or nearly equaling what comes from the best vinyl recordings. Very interesting, indeed. All this fun for buying an old DVD/HDCD player for $40 on ebay. Came with no remote and a missing stop button but was guaranteed to work with a remote, just didn't include one. I bought a remote for I think $15, also on ebay. My wife and I were pretty well blown away but what we heard last night, listening to Cd's that we're buying for $1 or $2 each on a bargain Cd player. Fun stuff.