What is "New Old Stock"?
Commonly known as "NOS," New Old Stock simply refers to tubes that were made years ago but have never been used. Much like antiques, "NOS" tubes are currently not being manufactured and this means their supply is dwindling while the price continues to rise.
thetubestore.com has over 1000 NOS tube types available. We have a few specially selected NOS tubes available as NOS Treasures.