I had a chance to audition the 2.4 at the Thiel factory in Lexington KY earlier this year. I am a long time owner of Thiel 3.6. The only real unknown for me was the bass. (They had the 2.4's mated to the SW-1 subwoofer.) I will say that the 2.4 is smoother and more refined. With a soundstage that was little short of spectacular. Of course, this was the Thiel listening room, so one would expect everything to be just right. Still, I came away very impressed. A lot will depend on your own room and electronics. But if I were starting over, I would be tempted to go with the 2.4. They are well worth a listen.
