NOS last longer, and NOS sound much much better than currently manufactured tubes; they cost more for a reason. Read other threads on this subject and you'll discover why we buy NOS tubes as opposed to current manufactured tubes.
NOS stands for New Old Stock, and when I buy from a reputable tube dealer, I assume that is what it means. I've bought tubes from the same dealer for years, and considering the short life span of current tubes as opposed to the long life of NOS, I've gotten my money's worth.
NOS stands for New Old Stock, and when I buy from a reputable tube dealer, I assume that is what it means. I've bought tubes from the same dealer for years, and considering the short life span of current tubes as opposed to the long life of NOS, I've gotten my money's worth.