6080wa/6as7/ecc230 Philips By Mullard Tested With Roetest V10 Black Plates Qty-1

6080WA/6AS7/ECC230 PHILIPS BY MULLARD TESTED WITH ROETEST V10 BLACK PLATES. Auctions is of for one tube 6080WA Black plates in original Philips boxe but the tubes are Mullard as can be seen from the pictures according to the codes. Tested with Roetest V10, "the Rolls Royce of tube testers" [emissionlab quote], a wonderful german professional system for testing tubes, it shows everything about a tube. The tubes meet datasheet specifications, first the quality tests - filament test, shorts test, gassy test (Ig1, vacuum factor, Ia variation with 1M2 grid series resistor), kathode isolation (leakage to filament), then quantity tests - value of current for plate, kathod, G1, value for transconductance, gain, G1 curve, Ia curve etc. All results for these tests can be seen on te datasheet delivered for each tube.

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