You can use el34 too but you won't get anymore power running 6550's or KT88's or even cut some holes in the lid and fit KT120's or KT150's at wich point it will sound just as good as it did on 6l6 for a few mins till the mains transformer catches fire.I bought a MESA BOOGIE 400 (no Plus) today, I want to change the tubes.
It 'true that you can use either 6x6L6 and 6x6550 - 6xKT88?
I'm looking for somewhere that sells a full retube set for a Mesa/Boogie Bass 400.
Wait, are you saying you're getting shocked by the amp when in use?the tubes are old, so I want to change them.
Furthermore, feel shock and noise when the Mesa Boogie 400 is ON.