This is a kit of Tung Sol Sol qulity valves and the kit has four 12AX7 and a pair of 5881 output valves. These are used in American amps for example Engl, one example being the Engl E330 Screamer.
All valves in this kit are from the re-issued Tung Sol family of valves . The 5881’s are a matched pair which have been tested by us and a test certification is supplied. One of the 12AX7;s is matched / balanced for use in the phase splitter position. This selected by us and a test certificate is supplied with your kit.
Tung Sol are made in the Russian Federation and have a rich tone and have particularly good non microphonic behaviour.