Looks like he bought an amp. That's great. I do want to mention if you have vintage tubes you want to use, you may not have matched pairs for BIAS not transconductance. You can't match them on most old testers. If that's the case, make sure the amp has a bias adjustment for each tube. The Cary SLI-80 Sig has a bias adjustment for each pair, so you need matched pairs.
A cathode-bias amp can reduce tube life since they run in class a. See if you can find out how much plate voltage and how they bias the amp. It's hard to find out but ask around if you have tubes you treasure.