The 12AU7 in parallel mode will double the output power to roughly 2 or 2.5W. That's a 3dB increase, barely discernible to the ear. The following will do better than that, nearer the top of the output range you mentioned. Do any of these tubes show up on eBay over there? I know they won't necessarily be found at guitar parts retailers.Bieworm wrote: ↑Sat 07/10/21 3:48 amJust looked for those types, but it's nog going to be easy to find them here.
Actually, I'm kinda biased towards the 12AU7 in the previous build. I was very impressed. Might go the double 12AU7 PP in parallel route...
OTOH a pentode would offer some other options like G2 control and stuff...
Dilemma's... but it's a september build, so there is time
(One) 6BL7
(One) 6BX7
(Pr) 12B4
(Pr) 6AK6
(Pr) 5686 (in triode mode)
(Pr) 6AH4GT
(Pr) 12BY7 (in triode mode)
(Pr) 6CL6 (in triode mode)
(Pr) 6197 (in triode mode)
You could also use a pair of somewhat larger pentodes in triode mode, maybe the 6AQ5, but with reduced B+ supply voltage for earlier saturation. Not quite the same effect as clipping at the grid, so this might affect the overdrive tone.
Jack