Matched pair vintage MO-V/GEC KT-66 Grey glass Brown Base Valves/Vacuum Tubes - AVO tested strong.  Ideal for guitars or hifi.  Quad II monos. One GEC1958 manufacture and one GEC 1955 manufacture, both from the Hammersmith facility.  Labels excellent on one, good on the other, both valves in very nice overall condition with original boxes.

Tested on a recently calibrated AVO VCM 160 with the following results;       

                         IA      GM
Valve 1:   A1   67.0    6.0     
Valve 2:   A1   68.5    5.9      

AVO NOS Specs:  IA = 65.0 GM = 6.3  

No leaks or shorts / gas, solid bases, shiny pins. eBay seller for over 21 years, buy with confidence - see feedback.  Valves will be shipped next day, carefully packaged, tracked and insured.  Please drop a note with any questions.

Shipping happily combined on multiple items.

For overseas purchases, please message for a shipping quote before purchasing.

Don't use your amp as a circuit breaker, buy tested valves!


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