I forgot to mention in my "review" above, that I heard a pinched quality in the upper midrange, noticable in the upper range of trumpets and violins. And on higher up, the violins then became a little too thin. And not just on solo violin; full section orchestral violins also suffered. I even heard this pinched quality on upper harmonics of lower-pitched instruments (trombones for example). The 2.3s were sweeter in this range (but then lost out by being too lean in the lower mids). I remember the 3.6s sounding spectaularly full-bodied all through the range. I certainly don't hear this pinched/thinness with my 2.2s.
And for the record, I auditioned all these Thiels in my system comprising a Theta Miles cd player, Krell KRC3 preamp, Krell KAV250a amp and all Straightwire Crescendos and Serenade wires.
By the way, I think the BAT 300x amp should work pretty well with the 3.6s (but I've never tried it). But my Krell (rated as 250/500/1,000 watts into 8, 4 and 2 ohms respectively) did have a little trouble on the very biggest peaks with the 3.6s. It had the power, but lost some refinement under the load during the most demanding orchestral climaxes at realistic volumes. Those are TOUGH speakers to drive. I've not heard my Krell "clip" on any other speaker I've tried. I'd definately try to audition the 3.6s with your amp first, if at all possible. But I'm thinking your BAT amp might sound awfully nice with the 2.4s...
