This VT39 valve kit contains five ECC83S’s ( 12AX7) and two 6L6GC’s. We test every valve we sell and we use our SUPERMATCH process to match one of the ECC83S and the 6L6GC’s . You will receive a test certificate for the matched valves. The hand matched ECC83S is for the phase splitter position next to the output valves.
Valves are made by JJ Electronic in Slovakia.