Thanks for picking up this thread! I am so glad you are enjoying the KWM-88, as it was at the heart of one of my favorite systems at CAF 2019 (the last audio show I was able to visit) driving Sonner Audio Allegro Unums. I did eventually acquire an EHF-200, but its input transformer noise was a little much for my space in a near-midfield setup (and idled so high in class A for me to use the regenerator function on my PS Audio regenerator). The sound was also glorious, but the EF86s sounded different to me than I remembered the KWM 88's use of 6SN7s. Both lovely. Congrats on the new amp!