Matched Pair Sylvania 6DE4 Vacuum Tube Rectifiers OM2 It is dead quiet when

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

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

Not for use in guitar and bass amps

These tubes have crenelated mica spacers

This lot of six RCA 6GH8A tubes tested to spec on our Paul Hart-calibrated TV7/U

Matched Pair Sylvania 6DE4 Vacuum Tube Rectifiers OM2 It is dead quiet whenThis 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