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as above, Thiel speakers (CS 1.6, CS 1.7, CS 2.4, CS 2.4SE, CS 2.7 and CS 3.7) match very well with Tube electronics. Both an Integrated Amp or Separates fit nicely. Regarding separates, a Tube pre-amp plus Solid state power amp is preferred to my ears.
Associated Brands- Aesthetix, Audio Research, B.A.T., Cary Audio, Conrad Johnson, P.S. Audio, and Rogue Audio. I can attest to this group for Integrated Amp(s) and Pre-Amps.
Happy Listening!