5 RCA 6AF4 6AF4A Vacuum Tubes Valves NOS NIB Lot Of Five 12AU7A Milspec ZENITH-LABELED) measured 74/76 while Tube

ZENITH-LABELED) measured 74/76 while Tube Two measured 76/78 where minimum (65%) is 50/50 and 100% is 77/77

4 dB (-92 dB is the Maxi-Matcher's noise floor)

Tube One measured 73 while Tube Two measured 74 where minimum (65%) is 50

They have G 3R and W 4R date codes

This is a testament to their high emissions

5 RCA 6AF4 6AF4A Vacuum Tubes Valves NOS NIB Lot Of Five 12AU7A Milspec ZENITH-LABELED) measured 74/76 while TubeThese five new old stock, new in box RCA 6AF4A tubes tested to spec on our Paul Hart calibrated TV7 U. IN 2021 WE PURCHASED 150,000 VACUUM TUBES. IF IT'S NOT LISTED, WE MAY HAVE IT. PLEASE ALSO SEE OUT ETSY SISTER SITE "LOWTECHTWOO" AND OR CALL OR TEXT US AT 202 372 6931 IF YOU DO NOT SEE WHAT YOU NEED OR HAVE ANY QUESTIONS. 1. MOST OF THE TUBES WE SELL ARE OVER 70 YEARS OLD. WE CANNOT GUARANTEE FOR FAILURES AFTER POWER UP AS THERE IS NO WAY TO