4 Philco Number Type 27 #27 Vacuum Tubes Stamped / Engraved Bases Lot Of Four 3rd Quarter BW40 It sounds very good with

It sounds very good with light surface noise and the occasional click and pop

beefy black plates: three mica spacers for improved mechanical stability and low microphonics

medium bottles

2 milliamps and transconductance was 2460 micromhos for Tube One (Raytheon-BRANDED)

4 Philco Number Type 27 #27 Vacuum Tubes Stamped / Engraved Bases Lot Of Four 3rd Quarter BW40 It sounds very good withThese four Philco engraved base number type 27 tubes 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: 40, 41, 42 and 44 where minimum (65%) is 25 and 100% is 38. 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