Matched Pair Sylvania 6DE4 Vacuum Tube Rectifiers OM2 It measured 48 where minimum

It measured 48 where minimum (65%) is 36 and 100% is 55

5 inches and the shaft is approximately one inch high with a diameter at its widest of 1/4 inch

new in box Sylvania 6GS7 tubes tested to spec on our Paul Hart-calibrated TV7/U

These tubes have crenelated mica spacers

It is dead quiet when the preamp is muted and have excellent frequency response and dynamics

Matched Pair Sylvania 6DE4 Vacuum Tube Rectifiers OM2 It measured 48 where minimumThis matched pair of Sylvania 6DE4 rectifier tubes was tested on our Paul Hart calibrated TV7 U for shorts, gas and emissions. There were no shorts or gas. They measured 73 and 73, respectively, where minimum (65%) is 50 and 100% is 77. They have gray plates; 312 66 38 158 and da EGD provenance date codes, respectively; short bases; side O getters and crenelated, rectangular top and bottom spacers. WE HAVE SCORES OF THOUSANDS OF VACUUM TUBES. IF IT'S