What CD player will warm my Thiel/Classe systm?

Try some tubes in the line up. The California Audio Lab Sigma I or II DAC are great buys with their single 12AX7 tube output. Or, go to a tube preamp and use the integrated as a separate amp. "Warmer" interconnects like Cardas Golden Cross Reference between the CD and the amp will alter the character of your sound as well.

A "wamer" CD goal could be a cry for a less harsh sounding DAC which is what the Sigmas provide. The cables are another nice tweak but by themselves may not be enough "warmth" you crave.

Try listening to some tubes and evaluate if they head you towards what you seek. I heard and slowly moved all the way to tubes - preamp, monoblocks, DAC, phono-stage...the tube "warmth" was seductive!

Good luck.

The CEC/Parasound belt drive top loading players are quite analog and open sounding. Well under $1,000.

The Jolida JD100 goes for $750 from New Tube

Merely getting a better CDP probably ought be your focus. A superior player might or might not necessarily sound 'warmer' per se, but it should offer improved resolution, extension, dimensionality, tone color, dynamics, and textural refinement, with less congestion, all of which should make it more involving and pleasant to listen to. The Thiels will reveal the quality of whatever they're fed, and to this end the integrated amp, and whatever player you choose, might benefit from addressing issues of power conditioning and/or power cords in the system if you haven't already.

But Wlutke is right in bringing up that since the little 1.6's (which I think sound great BTW) can't offer the most generous lower-frequency balance, even if you don't feel the want or need to experiment with subwoofers (and assuming your room isn't too big for these speakers), it sounds like you might at least consider revisiting the topic of speaker and listening chair positioning, because as he implies changing CDPs alone isn't going to affect this particular impression (tonal balance) as much by comparison. Thiels do require certain set-up parameters in terms of listening distance and distance to sidewalls if they're not to sound bright, so if you have any questions in this area you should let us know your layout.

Two suggestions, the Jolida with Ei Elite gold pins and an upgraded power cord. Cables, try the MIT Shotgun series, a vast improvement over the AVT's.