Here on offer we have a Telfunken EL84 output pentode valve this is a nice catch indeed. Showing minimal smudged print but a very nice embossed diamond car touch on the base button. Tested using our AVO VCM163 this device gave the following test results:-
For Va = 250 V; Vg = - 7.5 V against a nominal specification for Ia = 46 mA gm = 11.3 mA/V
Ia = 32 mA gm = 8.5 mA/V
As you will appreciate this represents a lowered yet still useful emission level for one of the best EL84 types ever made and at a keep price too.
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EL84, MULLARD, NO WHITE PRINT, FACTORY CODE, kM1 B1K5, BLACKBURN, 1965 MANUFACTURE