Nain Audio

I agree that the 555 CD player is remarkably close to vinyl in terms of sound.  When I went from that player to the NDS server, what I noticed was that there was a substantial increase in the difference between vinyl and digital playback.  I could try to adjust the tonal balance using my speaker controls, but, I am too lazy.  Besides, I don't think a change in tonal balance would have addressed most of the difference.  I feel that the 555 server is closer than the NDS to sounding like vinyl, but I do suspect that the CD player is even closer (I can't confirm this because I traded in the CD player. 

The lucky person who bought my old 555 CD player got something really nice sounding which should deliver years of pleasure (because it had a new transport recently installed).

I once had the CDS3, and then later, the CD555.  I liked both players, but, the CD555 is quite exceptional.  It had a meaty, full sound, without being murky or sluggish like other players that can be described this way.  But, because of how hard it is to access a large CD collection, I bought an NDS server (I loaned the CD555 to a friend).  I did not think the NDS sounded as good as the CD555 player.  When I upgraded the server to a 555 server/uniti Core  setup, I traded in the CD555 player.  I like the new server, it is pretty much on par with the CD player.  By the way, I utilize a single 555 DR power supply and do not plan to upgrade by getting another 555 DR power supply.