I can remember being puzzled at having to turn the Naim amp volume dial past 12 o'clock (before getting cold feet recalling the old horror stories of the panels arcing and being left with tiny holes) without any reciprocal increase in sound.
I appreciate the information, as I'm sure others will too. The previous owner used them valves but neither he or I knew why it might matter (although a good clue might the date of manufacture). They were in great condition and had new panels fitted by Quad so moving them on was no problem.
So I guess I never really got to hear what they could do. "A great set of compromises"? Maybe some of those reviews weren't so overblown after all.
Oh well, you live and you learn!