Thiel owners please chime in.

Interesting sam, I have tried my 2 ohm tap versus 4 ohm and prefer the 4 ohm on my Thiel CS6 and 3.6.  I have never tried the 8 ohm tap but will give it shot and let you know.

After listening for a few days I have found the same thing, on my Mcintosh 501’s the 8 ohm tap sounds better, smoother, than my 4 ohm tap with my CS6.

I never would have guessed with the impedance staying below 4 ohms throughout the frequency range, I am assuming the CS6’s negative phase angle helps the low impendace load.  It is above my head, I just know what I hear.