I just ordered the eurotubes tube kit for my rivera knucklehead reverb 55,
it comes with 5 ecc83s preamp tubes and 2 e34l's.
I wanted to take out the grit and harsh highs on the rivera and darken it abit,
also wanted to emphasise the low mids frequency and give it a ballsier heavy sound
with the el34 crunch.
I was advised by bob to get that kit, anyone experinced some JJ's in rivera amps here,
or swapped to JJ's from other tubes?
I have the sovtek el34wxt and sovtek 12ax7A in it right now, replaced V1 with an ecc83 cz
by TAD and suddenly the amp smoothed out abit and had a more pleasing rhythm\lead tones to my ears, I think I really have those sovteks.
To replace at least one, maybe 2 in 2-3 months
I'm not too sure how they perform in Rivera, I know they do well in Mesa and Peavey, but I guess only time will tell.