I am neither an ee nor a missile designer. Does anyone know if there is truth to the notion that older tubes typically had a deeper (not sure if that's the right word) or more intense vacuum and therefore might be expected to last longer or perform better?
Why are older tubes so much sought after
What is it with old stock tubes?? They were made years ago and surely by now we have must learned something about making them. So why are some people searching for old tubes. I have a Shanling CD player and I actually think the stock tubes are better than the 395a tubes.