Matched Quad Philips What Miniwatt PCF80 9U8 Vacuum Tubes Valves The Pasadena Roof They have steel plates

They have steel plates

There were no shorts or gas and they measured 36/30

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

new in box (For Tube One) GE 6SL7GT dual triodes was tested on our Paul Hart-calibrated TV7/U for shorts

new in box US-made 33GY7A tubes tested to spec on our Paul Hart-calibrated TV7/U

Matched Quad Philips What Miniwatt PCF80 9U8 Vacuum Tubes Valves The Pasadena Roof They have steel platesThis matched pair of Philips Miniwatt PCF80 9U8 tubes was tested on our Paul Hart calibrated TV7 U for shorts, gas and transconductance. There were no shorts or gas. They measured 95 81, 95 84, 96 84 and 96 85, respectively. Minimum (65%) is 57 57. WE HAVE SCORES OF THOUSANDS OF VACUUM TUBES. IF IT'S NOT LISTED, WE MAY HAVE IT. PLEASE ALSO SEE OUT ETSY SISTER SITE "LOWTECHELEC" AND OR CALL OR TEXT US AT 202 372 6931 IF YOU DO NOT SEE WHAT YOU NEED OR