Matched Pair Raytheon 6K6 6K6GT Vacuum Tubes Black Plates Clear Bottle Gray Coated Glass Its silkscreening is ghostly and

Its silkscreening is ghostly and appears to have been done for Mullard

Sound was very good and the record was quite quiet

There are eight new old stock

These four metal base National Union 6Q7GT tubes tested to spec on our Paul Hart-calibrated TV7/U

and if you need just one strong section

Matched Pair Raytheon 6K6 6K6GT Vacuum Tubes Black Plates Clear Bottle Gray Coated Glass Its silkscreening is ghostly andThis matched pair of Raytheon black plate, clear glass 6K6GT tubes was tested on our Maxi Matcher tube tester with 325 volts on the plates and a bias of 36 volts. Tube One drew 21 milliamps' plate current while Tube Two drew 22. 4. Transconductance was 1620 for Tube One and 1730 for Tube Two where new nominal is within one standard deviation of 1900. These tubes have tall bases; black plates; clear bottles and bottom, D getters. As I write, I am