3 US-Made Number / Type 78 #78 Vacuum Tubes Shoulder ST-Shape Lot Of Three August 28 2024

3 US-Made Number / Type 78 #78 Vacuum Tubes Shoulder ST-Shape Lot Of Three August 28 2024This lot of three US made number 78 tubes was tested on our Paul Hart calibrated TV7 U for shorts, gas and transconductance. There were no shorts or gas and they measured as follows: 45, 46 and 52 where minimum is (65%) is 36 and 100% is 55. 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 NOT SEE WHAT YOU NEED OR HAVE

It also sounded great in my Schiit Audio Vali 2 headphone amplifier

It measured 82/91 where minimum (65%) is 50/50 and 100% is 77/77

These three Sylvania 6F5s were tested on our Paul Hart-calibrated TV7/U for shorts

is pretty quiet with some pops and ticks

It has outstanding silkscreening

It measured 47/44 where minimum (65%) is 40/40 and 100% is 62/62

Transconductance measured 56/56 for Tube One and 58/58 for Tube Two where minimum (65%) is 25/25 and 100% is 38

63 and 68 where minimum (65%) is 46

new in box Hytron 35L6 tubes tested to spec on our Paul Hart-calibrated TV7/U

a dimpled-sheet getter and outstanding flashing

I BUY TUBES IN BULK

I cannot guarantee that the copper-colored finish is rose gold