• WARNING: Tube/Valve amplifiers use potentially LETHAL HIGH VOLTAGES.
    Building, troubleshooting and testing of these amplifiers should only be
    performed by someone who is thoroughly familiar with
    the safety precautions around high voltages.

Mullard ecc82 12au7 code help

Status
This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button.

tulmkr

Member
2013-02-22 10:19 pm
Hi folks, Im new to the forum, but not to tube equipment. I have come across a few Mullard ecc82 12au7 tubes that all have the same codes on them. I am guessing that they are a matched triplet. I have been trying to look up the date codes for them, and I have to say I dont really know what Im looking for. I never really paid attention to them before, but these are brand new, and matched. The codes on the tubes are as follows....k61 b7j. There are also numbers at the top in white...1.10.7.
If anyone has any info, or can steer me in the right direction Id sure appreciate it.
 
Status
This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button.