My apologies to interject at this point of the discussion.
More than 10 days ago, I was inspired by Tom and got curious about the Benchmark DAC3 B. So, I contacted my local dealer to arrange for a home audition for the DAC. I replaced my T+A DAC 8 DSD with Benchmark DAC3 B. Right now, my Thiel CS 2.7 are driven fully with Benchmark DAC 3 B, LA4 preamplifier, and AHB2 power amplifier mono pairs.
I played a few music tracks in my playlist. Track after track, my jaw dropped lower and lower and it hit the floor. The amount of musical detail retrieved with the DAC3 B is astonishing! Along with that, it feels like CS 2.7 is rejuvenated, energetic, and lively! I am rediscovering music, as well as renewing my vow for CS 2.7.
I am very happy with this setup and I cannot imagine upgrading or "side-grading" the components for the next two to five years.... unless maybe Benchmark releases a newer and improved product. I am a proud owner of Benchmark DAC3 B. I implore fellow Thiel speaker owners with Benchmark components to give it a try!