No point in continuing this discussion. It's fairly clear you dont understand the basic effects of a zero NFB amplifier's interaction with a reactive load, nor if truth be told, any of the reasons behind building that particular circuit in the first place.

You feel qualified to rip apart a piece of electronics because you've read an article in Stereophool and subscribe to TweaksRus. You've "lifted a veil" whilst rolling off the treble and making the background noise intrusive, yet when you are told why this happens you behave like a child denied one last ride on the rollercoaster.

It's like trying to help a five year old with his homework - only somewhat less rewarding. Ian, I follow your lead.