This stock is odds and ends of various brands or 12AT7 tubes. Some are USA made tubes like RCA, Sylvania, GE, Raytheon, etc. Tubes from other countries such as Japan and India for example, are also included. If you want a good quality new old stock 12AT7 tube and do not require matched pairs this is a good option for you.
Please do not ask us to match pairs by brand.
If you require a matching set of this tube type please check out our other 12AT7 tubes available.