Matched Pair RCA 6F6 JANCRC6F6 VT-66 Vacuum Tubes Milspec NOS-Testing Nagrania XL 0235 I am playing them in

I am playing them in my Art Sound 805 mono blocks with Miles Davis' seminal "Midnight Blue" album and they sound terrific

5 record cleaner and then played it on my Rega Planar Three

new in box RCA 6JU8A tubes tested to spec on our Paul Hart-calibrated TV7/U

They are still stapled in their boxes

gray and silver coatings and an engraved / stamped base

Matched Pair RCA 6F6 JANCRC6F6 VT-66 Vacuum Tubes Milspec NOS-Testing Nagrania XL 0235 I am playing them inThis new old stock testing matched pair of milspec RCA JAN CRC 6F6 VT 66 tubes was tested on our Maxi Matcher 325 volts on the plates and a bias of 36 volts for shorts, gas and transconductance. There were no shorts or gas. Tube One drew 27. 1 milliamps' plate current and measured 2060 micromhos while Tube Two measured 27. 2 2160 where new 6F6s measure from approximately 2000 micromhos with plate current draw in the 20s. These tubes both have 743 date