The 3A is not hard on tubes.... Do a search and you will find that the Russian 6H23-EB is a great tube and currently supplied from Art.
FWIW, I've owned the Mod3, 3A, and 3B... and in over 15 years I've never had a tube issue.
Congrats on getting a great preamp.
Tony
FWIW, I've owned the Mod3, 3A, and 3B... and in over 15 years I've never had a tube issue.
Congrats on getting a great preamp.
Tony