RCA Cunningham 5Z3 Vacuum Tube Black Plate Rectifier Shoulder ST Shape 2 Waldszenen Opus 82 PLEASE PERUSE THE FOLLOWING:

PLEASE PERUSE THE FOLLOWING:

new in box US-made 6CG8A tubes tested to spec on our Paul Hart-calibrated TV7/U

It sounds terrific and has great bass and sparkling highs and Mayall’s voice is warm and clear as a bell

Transconductance was 1670 for Tube One and 1570 for Tube Two where new/nominal is within one standard deviation of 1900

it is probably plated

RCA Cunningham 5Z3 Vacuum Tube Black Plate Rectifier Shoulder ST Shape 2 Waldszenen Opus 82 PLEASE PERUSE THE FOLLOWING:This RCA Cunningham 5Z3 rectifier tube was tested on our Paul Hart calibrated TV7 U for shorts, gas and emissions. It tested 48 in Section One and 46 in Section Two where minimum (65%) is 40 40 and 100% is 62 62. It has a tall, engraved stamped base; black plates, copious amounts of flashing and a nice, old fashioned shoulder bottle. WE HAVE SCORES OF THOUSANDS OF VACUUM TUBES. IF IT'S NOT LISTED, WE MAY HAVE IT. PLEASE ALSO SEE OUT ETSY SISTER SITE