NOS or New Production Vacuum Tubes?

I’ve always heard that New Old Stock tubes (or NOS tubes) are better or more desirable than new production tubes. Is it true? Buy a Joy of Vinyl t-shirt! : https://www.etsy.com/shop/JoyOfVinyl Find out more at https://JoyOfVinyl.com Written & Produced by Rick Coste You can learn more about Rick and his work at https://RickCoste.com