Matched Pair Philips Miniwatt PCF80 9U8 Vacuum Tubes Valves NOS-Testing

Matched Pair Philips Miniwatt PCF80 9U8 Vacuum Tubes Valves NOS-TestingThis new old stock testing 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 90 82 for Tube One and 91 84 for Tube Two where 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 "LOWTECHTWOO" AND OR CALL OR TEXT US AT 202 372 6931 IF YOU DO

It has dual O getters

new in box GE 1V2 tubes tested to spec on our Paul Hart-calibrated TV7/U

One is labeled "Philco

These CDs play fine

Its first section measured 40 and its diode sections both measured 78 where minimum (65%) is 32 for section one and 40 for the dide sections

I am playing it in Bottlehead Crack headphone amplifier as a 12AU7 substitute and it sounds fine

Minimum (65%) is 32/32 and 100% 66/66

Most don't test great

They measured 100/78 for Tube One and 102/80 for Tube Two

It teats below spec but should work fine in many applications

This new old stock-testing Sylvania 6N6G tube was tested on our Paul Hart-calibrated TV7/U for shorts

They tested (from left to right) as follows: 35 and 52 where minimum (65%) is 40 and 100% is 62