Can you please tell me what I have to do to purchase tubes for my PS100. I sent pictures of the tubes I have now and nobody responded. Thanks for all your help.
Hello @DARlou068
So any matched pair of tubes will do. There was a long discussion about this last week, PS-100 replacement 6550 tubes running at 60ma/no apparent bias adjustment - #2 by dan
If you want, you could ask your supplier for a matched pair of tubes that score in the middle of their plate current range.