4 Sylvania 5Z4 Vacuum Tubes Rectifier Lot Of Four Columbia Harmony new in box RCA 6GE5

new in box RCA 6GE5 tubes tested to spec on our Paul Hart-calibrated TV7/U

new in box Raytheon 6BD5GT tube tested to spec on our Paul Hart-calibrated TV7/U

It is dead quiet when the preamp is muted and has excellent frequency response and dynamics even though it tests poorly

tall bottles

they can put out as much as 2A3s and fell into disfavor because of socket supply issues

4 Sylvania 5Z4 Vacuum Tubes Rectifier Lot Of Four Columbia Harmony new in box RCA 6GE5These four Sylvania 5Z4 rectifier tubes were tested on our Paul Hart calibrated TV7 U for shorts, gas and emissions. They tested 46 52, 49 47, 51 51 and 52 52 respectively, where minimum (65%) is 40 40. 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 ANY QUESTIONS. 1. MOST FORMS OF SHIPPING