I had a Defy 7 25 yrs ago - beautiful thing. Lugging it over to bias was a pain. Mine never blew up, but finding matched NOS outputs was a challenge, even back then.
I'm retiring in a year and thinking about my "final" (ha!) system in a 16 X 17 room with 12 ft tray ceiling. Thinking about a pair of SF GH's with the JA-30 MkIIs...Let me know if anyone out there is tired of theirs.