g-2000 preamp tubes

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frank the crank ny
Joined: 2007-12-30
g-2000 preamp tubes

What preamp tubes should be used in the g-2000? They are not all the same and some you cant read. Any help please.
I have new output tubes and that took care of a lot. It doesn't sound as clean as it used too.
I think tubes are read from right to left. v1 and so on . I think. Thank you for any help. Frank