Hello Sangandongo, I read your post about the 1961 Tremolux 6G9 with EL-84 you bought last Summer. I recently bought the same great amplifier, although (factory?) converted to 6L6's. Mine is number 261; it might have left Fullerton with the same batch as yours! Does your amp have its original tube chart? Is the head drilled for the hold-down brackets? Thank you! All the best! [email protected]