hello all. My Blue Voodoo has in it 4 tubes (power amp) that say "GT-6l6B" on them, made by Groove Tubes. According to the Crate web site, it uses 4 6l6GT tubes. This all being said, what are my options in replacing the tubes, in these situations.

A) if i were to simply pull out the current tubes and stick on new ones, what are my options?

B) if i were to have it done professionally, now what are my options?

To clarify, in case my question is too convoluted, im asking what kind of tubes i could buy that would work in my amp


For example, would these work?
http://store.tubedepot.com/jj-6l6gc.html

Good question dude, I'd also like to know how to replace tubes on my Blue Voodoo without killing myself!

Yes those would work, but I suggets buying a matched quad, Doug sells them for cheap. http://www.dougstubes.com

If it has a fixed bias you can just throw the tubes in and play, if the biad is adjustable you will need a biad probe like the ones Weber sells http://www.webervst.com/bias.html

I say either way for JerryP to reply to this, or send him an e-mail. I know he's worked with Blue Voodoo's before and can tell you if it has a fixed bias or not.

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im quite sure it has an auto-bias feature, so does that mean i can just pop them in? thanks for the tip on the quad by the way, the link i posted was just an example

while we're on the subject, any suggestions on what to use?

If you positive that it has a fixed bias or auto bias then yes you can just pull the old tubes out and put the new ones in (with the amp off of course)

I suggest JJ's.. the Blue Voodoo can become buzzy with the wrong tubes, JJ's tend to tame the overall buzziness of the amp and make the lows more pronounced.

Still, an e-mail to Jerry is a great idea.

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