cd players with volume control

Wadia....
Benchmark Dac (if you want to go separate)
Some Theta models (Miles?)
Some Shangling models.
Resolution Audio models.
Audio Aero Capitole.

Make it sure that your amp has high input impedance.

These must have analogue volume control:
Resolution Audio Opus 21
Levinson No. 39, 390S
Audio Aero Capitole, Prima, Granite 657
Theta Miles
Cary 308T, 303/300
Digital volume must bee in most Wadia, Marantz and Accuphase players also Gamut, Shanling SCD-T 200/100, Consonance Droplet and many others. You can find a many topics about this here in forums too.
http://forum.audiogon.com/cgi-bin/fr.pl?ddgtl&1127503682&read&keyw&zzvolume
Good luck!

Audio Aero Capitole has volume control with remote function.

check out Wadia great player, and there is a 850 for sale on the gon.

Resolution Audio Opus 21
Any Wadia player