I have seen Sunn Sonaros with different tube complements:
One was 7199 and two EL34
Another was 7199 and two 6550
Yet another one was 6AN8 with two 6500.
If they are based upon the Dyna circuits, usually it would be 6AN8 and 6550 or 7199 and EL34.
Which is the correct tube setup for a Sonaro?
Does anyone have a schematic?
Thanks,
lawmbl