The days of NOS tubes are gone. How many old shops and basements can be gone through in search of tubes? Good quality present production tubes are the way to go, unless you have a reliable source and deep pockets for NOS tubes. I find that older tubes are now, more often than not, used tubes and, unless you are equipped to test them, have to take it on faith that then numbers provided mean anything.
Noise is one important factor, but one has to look at the overall performance of a product in context and not just one aspect. Although I have to admit that the noise floor should be as low as possible, but not at the price of doing without the other attributes of tube gear.
Why not have both types of equipment on hand?
Noise is one important factor, but one has to look at the overall performance of a product in context and not just one aspect. Although I have to admit that the noise floor should be as low as possible, but not at the price of doing without the other attributes of tube gear.
Why not have both types of equipment on hand?