Suggestions on used CD Player with Volume Control

I would stretch a bit ($2200-$2400) and get a used, latest iteration Resolution Audio Opus 21. This is an excellent player in stock form
Down the road you can get the Great Northern Sound Company mod and have one of the very best Redbook players.
I'm sure the other suggestions are good as well.

I've owned the following players w/built-in volume control: The list is in order of personal preference.

Resolution Audio Opus 21
Quad CDP-99
Monarchy Audio Model 33 DAC (need a transport)(not remote volume control)
Cary CD-308
Theta Miles (balanced)
Birdland Odeon Lite DAC (need a transport)(not remote volume control)
Musical Fidelity CD/Pre-24

The RA Opus 21 generally sells for more than $2000, but you might get lucky. The Quad was a very good player in my system and can be $700-$1050 depending on vintage. The newer mkII is supposed to be better, but I haven't heard it.

Enjoy,

TIC

The Shanling S-100 Mk 2 has a nice built-in volume control that works off the remote; 1 step increments going from 0 to 99. I have used mine directly into a Classe 15 power amp and it sounds superb.

If you find a Granite 657 they are excellent they have a variable tubed output. They sell new for about 3k have excellent sonics really very good for that money. Used they sell dirt cheap you would probably pay as little as 30% of retail for a mint machine. You just don't see them very often.