Express 5:25 which tube in single ended 5w mode?

[ficelles]

Simple question, which is the active power tube when running 5 watt single ended?

 

[DrKev]

Facing the back of the amplifier, it's the one on the LEFT.

Thanks for reminding me to change them around. (I like to make sure that one tube doesn't get all the 5 W workload. Will it make any real difference to tube life? Maybe not, but it makes me feel better).

 

[ficelles]

Thanks for the info... I recently picked up a 5:25 which has probably the original set of Mesa-branded tubes, one has noticeable wear from heat on the lettering and is slightly less bright nearer the pins than the other, and it was indeed the one on the left. I've swapped them over.