This VT20 valve kit contains two ECC81 ( 12AT7), six ECC83S’s ( 12AX7) and two 6L6GC’s.
We test every valve we sell and one of the ECC81’s and the 6L6GC’s will be hand matched.
The ECC81 is used as the phase splitter and normally sits next to the 6L6GC output valves
We supply a test certificate showing the matching test results. Valves are manufactured by JJ Electronic in Slovakia