NOS tubes are definitely available. Here on Audiogon I regularly see people selling off NOS tubes from their collections that they realize they will never use.
There are crooks out there so you have to be careful. It's best to have a tube tester if you are going to buy NOS or used tubes and buy from someone who will allow returns.
If you don't want the hassle of learning about tubes and tube testers, the tube sellers noted above can get you top quality tubes for a price.
IMO, NOS tubes can make a difference in the sound of your system that is worth the price.
There are crooks out there so you have to be careful. It's best to have a tube tester if you are going to buy NOS or used tubes and buy from someone who will allow returns.
If you don't want the hassle of learning about tubes and tube testers, the tube sellers noted above can get you top quality tubes for a price.
IMO, NOS tubes can make a difference in the sound of your system that is worth the price.