Mystery 6L6GC, who can guess who made it???

[zodiac272]

what about the sylvania 6L6GB's (5881's right?) are they a match like the 6L6GC's are? are they worth it? nobody really talks about them

scott

 

[SonicProvocateur]

While I've never used the Sylvania ones, I have used the Sovteks. Tonally, the are pure brown sound. We got off topic and discussed the 5881 tone in this thread:

http://forum.grailtone.com/viewtopic.php?f=16&t=50828

I don't know if the Sylvania 6L6WBs will function in a Mark...but maybe someone else will know.

 

[94Tremoverb]

It's probably not a good idea to use genuine 6L6GBs of any type in a Mark, except in a Mark IV set to Tweed. (And presumably the MkV if it has this, I've never seen one yet.) Their voltage ratings are lower than GCs, and below the plate and screen voltages in most standard higher-power 6L6 amps. The same would be true in a Rectifier unless set to Spongy - you might get away with it in Bold/Tube as well, but it's pushing it. This is the main reason you don't hear GBs talked about much and they aren't as expensive as GCs for NOS types - they're just not as useful for most guitar amps.