Sylvania Black Plate 5U4 5U4G Hanging Filament Vacuum Tube Rectifier Shoulder ST Shape

Sylvania Black Plate 5U4 5U4G Hanging Filament Vacuum Tube Rectifier Shoulder ST ShapeThis Sylvania hanging D filament 5U4G rectifier tube tested 53 in Section One and 54 in Section Two on our Paul Hart calibrated TV7 U where minimum (65%) is 40 40 and 100% is 62 62. It has a 5MR date code; a bottom D or perhaps U getter and mica snubbers. IT HAS HAD SOME OXIDE SHEDDING. PLEASE SEE PICTURE. 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

AGAIN TUBE TWO'S CENTERING PIN IS MISSING

I have played them in my Radio Craftsmen RC-2 monoblocks with adapters (not included) and they sounded outstanding

This lot of three US-Made 6A7 tubes was tested on our Paul Hart-calibrated TV7/U for shorts

increasing your amp's headroom and power (if you can adjust your amp's bias)

generous flashing and an anode radiator for cooler operation and longer life

It is the tube on the right and is shown running with the United single that is also for sale separately

This LP is in very-good shape with very little noise

This CD-Rom is in fine shape

Tube Two measured 2160/26

This black plate GE-MANUFACTURED

perfectly-matched pair of RCA black plate 6AU7 dual triodes was tested on our Hickok 800 for shorts

Transconductance measured 73 in Section One and 72 in Section Two for Tube One and 75/70 in Tube Two where minimum (65%) is 50/50 and 100% is 77/77