Craig, that's a bit of audio history I'd not heard of, fascinating stuff indeed, and a huge shame, what happened to the 'demo(?)' Leak equipment made under your wing? I believe the Leak name is now owned by Hinchley or Tamura? Something to do with transformers.
I have a bit of Leak equipment, Stereo 20, Point One Stereo plus matching Troughline II with a stereo decoder designed by a chap called Tim De Paravicini, all running a pair of B&W's.
This being my 'fleeting' trip down Hi-Fi lane in the late 90's, still sounding nice. How did they achieve such sonic possibilities back then, with carbon comp's, standard gauge wiring throughout, screw terminals and AC wiring within all the sources/amplifying stages?
On a different note, one thing I'd not heard of, 'Quantum Stickers'. Yep, £135 a go,
https://www.audiocomav.co.uk/tuning-...-stickers.html not sure they'd survive on a set of EL84's.
Mark