That's somevsystem you have. Biamping with those amps quite the combination.
I only have one 12ax7 in my amp, branded Baldwin. Never tried a Yugoslovian there though have the 4 6dj8's I mentioned in another post in this thread.
The D70 was a favorite of Kent's of ElectroStatic Solutions. He ran EI KT90's in it instead of 6550's.
It's great to hear there's still some interest in that amp.
"I know just enough to get into trouble. But not enough to get out of it."
