Depends on many factors, so it is very hard to say definitively. I don't believe Dan is running the tubes very hard, so tube life should be pretty good.
George
Thanks George,
I have no doubt that life span is fine and well worth it. I was getting at something here but wanted to get confirmation on what I thought I remembered hearing about the lifespan of the NOS TungSol's...
This quote from iGrant got me wondering.
"We don't know how long they will last in service, certain materials that made NOS last so long just aren't allowed to be used anymore, but we have zero reports of failures on them since we got our AT-1000 and could sort out the grading and reject the 'too far from spec' ones. We expect more than 5,000 hours, time will tell."
It seems to be the consensus so far that the Black Treasures sound
better than the Round Plates but how much better? I know the 'how much better' outlook is subjective but if the TungSol's are very very good to begin with and last
possibly twice as long at the same price, then one could look at it as the Black Treasures costing twice as much if one must purchase them more often.
This might seem like a odd thing to think about to some but Im looking at this from the perspective of people who buy ahead to secure their NOS or these new Black Treasures...
Jason