Two, Sylvania USN CHS 6SN7WGTA tubes, military issue (US Navy). Outstanding sonics. The 6SN7WGTA is a ruggedized 6SN7GTA tube and can be used in all applications calling for the 6SN7GTA and 6SN7GT.
Item Tag: 6SN7WGTA
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Sylvania JAN 6SN7WGTA Black Plate NOS matching date pair Tested USA
These are 6SN7WGTA tubes which are the ruggedized version of the 6SN7GTA. They can be used in applications calling for the 6SN7GT and 6SN7GTA. Firm bases, excellent silvering. Tubes are matched for dynamic gain and structure-test at 3250-3250 and 3250-3125 where pass/fail is 1625 micromho.