tlingen
Active member
Peter, what preamp tube positions would it be safe to try Tung-Sol 12AX7's in a Herbert?
Ventura
Well-known member
You can try 'em in any spot.
Peter Diezel
Well-known member
Please check if the y are micro phonic in V1 and V2.
tlingen
Active member
I will check then Peter, thanks. I didn't know if the Herbert had a high voltage cathode follower and I heard it was very bad to use a tung-sol there.