I have a Bruno Underground 30 head which I love. I am currently using NOS Tesla power tubes in it. It is starting to lose some if its sparkle and headroom. I am wondering if I am starting to wear out the power tubes. I have some questions for you folks who know about these tubes.
I have read that they wear pretty fast in these cathode biased amps. I have had them in my Bruno for about 6 months. I probably play about 8-10 hours a week.
Is this normal wear for El-84's in this type of amp?
How can I tell if my tubes are starting to get worn out?
How often do you have to replace yours?
And lastly, what kind of tubes do you use? I am leary now of using nos tubes in EL-84 amps, Mike at KCA states that some of these amps will wear out any tube fairly quickly compared to some other types of power tubes.
Has anyone tried JJ's and how do you like them?
Thanks,
Tim
I have read that they wear pretty fast in these cathode biased amps. I have had them in my Bruno for about 6 months. I probably play about 8-10 hours a week.
Is this normal wear for El-84's in this type of amp?
How can I tell if my tubes are starting to get worn out?
How often do you have to replace yours?
And lastly, what kind of tubes do you use? I am leary now of using nos tubes in EL-84 amps, Mike at KCA states that some of these amps will wear out any tube fairly quickly compared to some other types of power tubes.
Has anyone tried JJ's and how do you like them?
Thanks,
Tim