Matched Pair General Electric GE 6005 6AQ5 Black Plate Vacuum Tubes 6SL7GT 2835 3730 Plate current measured 9

Plate current measured 9

These two US-made 14A4 tubes tested to spec on our Paul Hart-calibrated TV-7/U

D getter and a 4-09 188-5 date / provenance code

This perfectly-matched septet of new old stock-testing Sylvania 7A7 tubes was tested on our Hickok 800 for shorts

Matched Pair General Electric GE 6005 6AQ5 Black Plate Vacuum Tubes 6SL7GT 2835 3730 Plate current measured 9This matched pair of GE black plate 6005 6AQ5 output tubes was tested on our Paul Hart calibrated TV7 U for shorts, gas and transconductance. There were no shorts or gas. Tube One measured 66 while Tube Two measured 68 where minimum (65%) is 46 and 100% is 71. These tubes have stout, shiny, ribbed black plates and stout O getters as well. It took two adapters but was worth it as they sounded fine in my Mini 2013. WE HAVE SCORES OF THOUSANDS OF VACUUM