Chris:

I've noticed innumerable questions and comments about
using SV83s in the AX84. It seems to me that an SV83 would
work just fine if you made the following changes (reference
the full version 9 with tone stack):

a) change R7 to 1k ohm
b) change R2 to 10k

Could you please suggest this to the others?? Thanks.

Eric Barbour
Svetlana Electron Devices
Portola Valley CA USA