3 Sylvania Number / Type 78 #78 Vacuum Tubes Shoulder ST-Shape Lot Of Three

3 Sylvania Number / Type 78 #78 Vacuum Tubes Shoulder ST-Shape Lot Of ThreeThese three Sylvania plate number 78 tube were tested on our Paul Hart calibrated TV7 U for shorts, gas and transconductance. There were no shorts or gas and they measured as follows: 44, 46 and 52 where minimum is (65%) is 36 and 100% is 55 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

These four GE 6AX3 tubes tested to spec on our Paul Hart-calibrated TV7/U

This cooling chimney/shield fits a 6L6GC nicely and with room to spare on top

These six RCA black plate RCA 50B5 tubes were tested on our Paul Hart-calibrated TV7/U for shorts

This lot of seven RCA industrial-grade 1852 (6AC7) tubes was tested on our Paul Hart-calibrated TV7/U for shorts

This matched pair of milspec Hytron 5654 / 6AK5 / JHY-6AK5 tubes was tested on our Paul Hart-calibrated TV7/U

They are dead quiet when the volume is muted and have excellent frequency response

These five Philco Type 37 triodes were tested on our Paul Hart-calibrated TV7/U for shorts

new in box GE 5DH8 tubes tested to spec on our Paul Hart-calibrated TV7/U

I am listening as I write and this album sounds fair-to-good with constant

5 milliamps' plate current and tested 2600 micromhos while Tube Two tested 31/3000

I am playing them with adapters (not included) in my Radio Craftsmen RC-2 monoblocks (with adapters

44 and 48 where minimum (65%) is 32 and 100% is 49