Will NOS 6v6 tubes work in a Marshall DSL15 head?

[guitup too]

I picked up one of the new Marshall DSL15 heads a few weeks ago and was thinking about trying some RCA 6v6 in it. I seem to recall reading something about old stock tubes not being able to handle the voltage and/or current of modern amps. Can anyone give me some insight into this before I burn up a pair of tubes?

 

[blackba]

The concern is the plate voltage. You can start by checking the plat voltage of the current tubes and see about what they are at, then report back. If I remember correctly its pin 3 to pin 8. Do you have a set of bias probes (some will measure plate voltage for you)?

 

[guitup too]

Thanks. So how much plate voltage can the old RCA 6v6's handle reliably?

 

[blackba]

Thanks. So how much plate voltage can the old RCA 6v6's handle reliably?

That's a great question, I would ask Mike at KCA nos tubes, or doug at dougs tubes, or Valve Queen (laura) who posts here.