Questions about the proper amp for Thiel speakers come often up here. I would answer such a question by inquiring what is your standard and weakest link in the chain. I have yet the standard for myself to have a resolving chain of 16 bits or better, which translates to a thd+noise of each component better then 96 dB. With a streaming source of music or a high quality cd player, the (pre) amp becomes the weak link. Here is a link to a database of amplifier measurements by 3rd parties.
https://docs.google.com/spreadsheets/d/1ZlTOYxmPs938gqHjtDABkWS-MApu7uJjzIGnJ2Elm6Y/edit?usp=sharing
Benchmark leads the list and hypex based amps are well represented near the top. For the diy, the plate amps of hypex are a great and affordable option to have a complete digital chain from beginning to end.
https://docs.google.com/spreadsheets/d/1ZlTOYxmPs938gqHjtDABkWS-MApu7uJjzIGnJ2Elm6Y/edit?usp=sharing
Benchmark leads the list and hypex based amps are well represented near the top. For the diy, the plate amps of hypex are a great and affordable option to have a complete digital chain from beginning to end.