I haven’t heard any of these preamps, so with that in mind, The ARC and VAC preamps are known for their transparency and articulation of transients. They may not be the best choices for taking the edge off your Thiels. They are very fine preamps, though, and maybe with the right tubes the VAC would work.
There are plenty of tube preamps that will soften the music a little and tube rolling can help you tune the sound (not with preamps that use the 6H30 tube though), but you’re shopping above my price range, so maybe someone else can give you more specific advice.
There are plenty of tube preamps that will soften the music a little and tube rolling can help you tune the sound (not with preamps that use the 6H30 tube though), but you’re shopping above my price range, so maybe someone else can give you more specific advice.