unjc
I owned Thiel 3.6 and the more power (current) the better they sounded because they are mostly 2ohms for most of the audio band and only 85db efficient . Look for a quality solid state amp as Thiel states of 100-500w and I would also look for quality amps that use bi-polar output devices, as these deliver current better than Mosfets can.
From Stereophile bench measurments:
" The low impedance value explains the CS3.6's need for the iron-fisted Mark Levinson No.23.5 to provide control in the bass; the CS3.6 would appear to be current-hungry."
https://www.stereophile.com/images/archivesart/Cs36fig1.jpg
Cheers George