I have the Thiel CS6's and run them with a Krell FPB-300. The Thiels are so much faster, cleaner, and tighter than a PS Audio 200 (?) Delta I was driving them with. I think the more power, the more Thiels come to life. They are probably a 4 ohm load also which is a consideration. I would also go to an amp that will take a balanced interconnect.
Thiel 3.6 s and amplifier choices
I recently purchased Thiel 3.6's. Currently driving them with an Aragon 4004 Mark II. Other equip is Arcam FMJ23 Cd, VPI TNT, and Krell KRSII preamp, FMS Grey cables and old Audioquest Interconnects. Looking for suggestions on amplifier as I think there is a lot more to be had out of these speakers. Balance is slightly tipped up due to mid bass leanness but they do so many things right. Any thoughts.