I realize I may be stepping on M125 kit toes here. Has anyone ever wondered about the M 125 board in a MK III chasis? Just wondering how far the stock MK III power and output transformers can be pushed. Could always upgrade with Bob's new transformers if needed. There certainly does seem to be enough real estate on the standard Dynaco MK III chasis for four 6550 possibly KT 90 tubes. KT 120 and 150 vacuum tubes may pose a problem with the glass egg envelopes. I have not measured, but eyeballing the chasis looks like a fit! The VTA M 125 chasis definitely has more real estate. I'm trying to get on board with these amps and do appreciate your feedback. Pun intended.
Last edited by tubed1 on Mon Nov 02, 2015 5:56 pm; edited 1 time in total (Reason for editing : typo)