Just my opinion, but I think the 101D based CSL is Israel Blume's finest piece when used with the superb Psvane WE replica 101D tubes.
Has been my assessment for a long time. Simply a stunningly good Line stage and no concerns with regard to power output needs as arises with the superb sibling Frankenstein SET.
Bill, excellent comments in total. I hope that @sim_audio_nerd reaches out to you.
Charles