Tube selection for Simul-Class Mesa Mark III++

[ners]

Haven't been happy with the way this was sounding lately so I decided to test some tubes and seems like the inner 6l6s (STR 445 yellows) were worn down. Blindly ordered some more but got sent STR 448 Greens by accident...are these worth keeping?

Consulted my friendly AI which seemed to suggest they're actually a better choice (448 > 445 & green > yellow) but now it feels like a whole tube rolling rabbit hole...

EDIT: Welp, said fuck it and threw them in. It sounded glorious for about 1min before it blew a fuse...so onto troubleshooting I guess.

 

[Techdeth]

Bad power tube
My 3++ simul blew a second cap

 

[DanTravis62]

Yeah sounds like the tubes weren't the issue in the first place

 

[ners]

Ran out to buy new fuses since of all the ones I have lying around none were the right fit. Amp plays just fine with the outer EL34s so yeah sounds like a DOA tube.

So back to my original question, what 6l6s are folks using for this beast?

 

[Holy-diver]

I have been getting “mesa rated” JJs from ruby that work super well for me, in an HRG III++ though so it’s slightly different