Never really made it , but I was always ( still I am ) curious , especially with “improved” version list of parts – where big bjts are used as small signal parts.

It’s from so ancient times that I really can’t remember from where I got it ……… if you have original article , maybe even about accompanied output amplifier , I’m very interested …….

– this is edited previous post , added some text scans and few files found on net … same as schematic ( without values ) for Apex amp ; I think I have that article too , even if incomplete , so when and if I find these pages , I’ll scan and post it