[Noob Alert]
I have a number of NOS EL34s that I need tested so I can run them as matched pairs in a pair of
Quicksilver Mid Mono amps. (My pair of amps have pin jacks to allow for meter use in setting the bias of each pair of power tubes.)
Due to Murphy's Law of Moving (stuff is never in the right box) I no longer have the data sheets. The shop I purchased the tubes from is no longer in business. So I looked at
tctubes.com. Their Standard test includes current draw (mA) and transconductance (Gm) in the actual readings (upon request) for each tube. In requesting a quote they also supplied me with a sample AT1000 data sheet (image below) for a typical EL34 which would be part of their Premium test.
a) Is the data in the Standard test sufficient for me to match up the tubes to a reasonable extent?
b) Or would it be necessary (or even worth the doubled cost per tube) to get their Premium testing done?
TIA for any comments or suggestions.
Sample EL34 data sheet:
