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Burnedfingers 1st June 2009 12:08 PM

6GU7 in an Aikido?
Just wondering if I could use 6GU7 in place of the 6Fq7 (input tube) in my Bas Aikido board. Would I have to change cathode resistors?

Burnedfingers 4th June 2009 12:47 AM

Any thoughts?:confused:

rman 4th June 2009 01:28 AM


I think Broskie mentions in hi latest entry about using that tube.

Burnedfingers 4th June 2009 10:49 AM

Thank you

I haven't been to his site in over a year. I found the article.

I tried the 6Gu7's without any circuit changes and they sound great.

Vincent77 18th February 2011 07:52 PM

You should increase Rk, though, if you use the 6GU7.

In my Aikido (240v B+) I use 470 ohm for the 6CG7 and 560 ohm for the 6GU7.

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