oblgny
Thank You for sharing your Audio journey. There are not too many Audiophiles (out there) enjoying B.A.T. / Thiel combo. You were the 1st here. B.A.T. has a strong Research and Development (R&D) department. The company is quite a machine in that regard with REX3 series available now. I can remember the original REX.
I grew up on the Mosfet sound. It is quite musically rewarding and wonderful. My AYRE gear touches on this design plus a Tubed flavor. Give credit to the Diamond Circuit. Pretty amazing in the Twenty Series Integrated Amp and corresponding Separates. Yes, being a frugal and smart shopper can yield an incredible system for pennies on the dollar. I concur in this approach to system building.
Good to read that the Belles is a hit in your room and system.
Happy Listening!