This information is very intresting.
I have a 2:90 question on the new version.
I repaced the 6l6s with mesa 6l6 matched pairs
like this order
(6) (6) (5) (5)
(4) (4) (3) (3)
I could not get a matched quad from mesa.
Is this right or wrong.
I also could not find any info in the manual.
mabey...