Stock Mesa Mark V with Mesa 6L6 and 12AX7. I just popped in a quad of EHX EL34's that a friend loaned me, and the amp just came to life! Night and day difference, imo. I've done reading and apparently Mesa's come with a bias between 25 and 30 mA (supposedly the V is the hottest out of all Mesa guitar heads in current production), and some tubes some rated at 33 mA. Is this alright for the amp, or will I face trouble down the road? Also, what EL34's would you guys recommend for my amp? It runs into a Mesa Stiletto 4x12, and the noise comes from a Schecter Blackjack ATX C8 tuned to drop F# (whole tone up from drop E). I like the EHX's, but I'm curious to know what else is good!