Sander deWaal wrote in message






Do remember that they age rather quickly.
Best way to "store" them is to keep them happy under supply voltage.
I.e in an amplifier :-)


I'm currently not using my line level tube preamp made by Audio Research.
It uses (4) 6922. Is it better to keep it plug then ?


Incidentally, I replaced it with a McKintosh C-41 preamp many moons ago.