And if you do decide to install socket savers, look at Tube Mongers. The cheap varieties found on EBay and Amazon are poor quality.
If you can find NOS Pomona Electronics socket savers, they are the best but more expensive than Tube Mongers.
https://www.tubemonger.com/searchresults.asp?Search=Socket+savers&Submit=
I use them in a tube tester but not my amplifier.