Joule Eletra LA 100 MKIII


Just wonder if anyone out there have a copy of the instructions for biasing the tubes for the Joule Electra LA 100 Mk III; much appreciated if you can email or mail me a copy.
I have a copy of the owner's manual, but doesn't mention anything about biasing the tubes.
pioneer48

Showing 3 responses by pubul57

As Truman says, there is nothing to balance in the Joule
preamp. What you do is buy tubes that are tested forn noise
and matched. I would call Jud and have him discuss the
issue. It sounds like you just got the preamp? If I remember
correctly, the preamp needs a 5751 and 6350 tube, and a pair
of OA2 and 6EM7 - I would recommend sticking with Jud for
tubes as long as he is involved and selling to the market.
I stand corrected. I knew there was battery bias in my LA150, but I thought that was just a matter of replacing the battery at some point. Sorry for my misleading comments.
Geez, I never knew that was an option. I had the LA150 MKII SIgnature Edition - same thing with it?