You can choose your Upgrade Vacuum Tubes by Specification.
We offer a Range of Vintage USSR New Old Stock (NOS) Military Spec Vacuum Tubes. They are direct equivalents to Chinese Stock Amp Valves.
Because Russian Vacuum Tubes are the original design, they are superior in build and sound quality.
For example, the Cheap Chinese 6N1 is an inferior copy of the USSR Military 6N1P. Russian Originals contain rare earth metals and trace elements. Cheap copies cannot match such quality. Chinese 6N1’s cost around £0.20 GBP to manufacture. Hence, many good amplifiers do not reach their full potential.
Vacuum Tubes are the heart of your Valve Amplifier, thus Upgrade Vacuum Tubes reap lasting rewards.