Wow, what a story, George. Luckily I don't have to bias my power tubes. What I need to measure and match especially are those preamp double triodes and to find those with the least noise.
How to test those NOS tubes
After many decades of audiophilia nervosa und some years of tube rolling, I've finally bought myself a nice WE Tube Checker to try to measure and match those critters myself. Since I'm an absolute greenhorn in this game, what are the main parameters I must look out for? How do I test for noise for example ? Is there a site, which helps newbees like me? Are there books I should be on the look out for? Could anybody tell me the basics? Any help is greatly appreciated. Thanks in advance!