Quote Originally Posted by DrNomis_44 View Post
Just a thought, has the amp ever been in transit recently?, ie, being transported from one place or another?, also, was the amp recently moved from a warm environment to a cold one after it had been powered down after use?, that can sometimes end in tubes cracking.
None of that... been in my music room for 18 months. Average temp 16-25° over 12 months winter-summer. Just popped the lid and stuck the Tung-Sols in. Finished a 2 hour session last night with the old 7025's installed without a problem. Hmm...