Sorry @gwalt but your experience does not contradict my experience with Jadis. You did not indicate requesting BIAS VALUES for your amplifier with selected tubes. It is on this point where Jadis invoked a LAW (!) stating that they could not and would not give that information for a fixed bias amplifier for my "own safety". Therefore Jadis was perfectly unwillingly to help a customer. Note that these exchanges were conducted in French (as I am French) in both writing and by telephone, therefore there was no misunderstanding about the subject at hand.
UPDATE : since then, and without Jadis's help, I have determined the correct resting current values and adjusted the bias on a new quad of tubes. This was performed in spite of Jadis's concerns for my health and I have survived the ordeal to write this response. Have a good one.
UPDATE : since then, and without Jadis's help, I have determined the correct resting current values and adjusted the bias on a new quad of tubes. This was performed in spite of Jadis's concerns for my health and I have survived the ordeal to write this response. Have a good one.