SKU:66903051968
Matched Pair Sylvania Type / Number 27 #27 Vacuum Tubes Perforated Plates
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Ships within 48 hours · Estimated delivery Sep 27 - Oct 2
Description
Matched Pair Sylvania Type / Number 27 #27 Vacuum Tubes Perforated PlatesThis matched pair of Sylvania Type 27 triodes was tested on our Paul Hart calibrated TV7 U for shorts, gas and transconductance. There were no shorts or gas. Transconductance measured 32 for Tube One and 33 for Tube Two where minimum (65%) is 25. The tubes have rounded black plates; wire snubbers for increased rigidity and lowered microphonics; dimpled sheet getters; excellent flashing and well secured bases and bottles that are nice and tight. WE
These four GE 8BM11 tubes tested to spec on our Paul Hart-calibrated TV7/U
new in box Amperex-MANUFACTURED
There were no shorts or gas and it measured 40/37 where minimum (65%) is 32/32 and 100% is 49/49
Too bad about the album cover
They tested (from left to right) as follows: 36
A 9 out of 10
32 and 33 where minimum (65%) is 25
new in box GE 12EQ7 tube tested to spec on our Paul Hart-calibrated TV7/U
they were very brittle
new in box Meson J510 146
Transconductance measured 36/36 for Tube One and 48/48 for Tube Two where minimum (65%) is 32/32
new in box GE 17JB6 tube tested to spec on our Paul Hart-calibrated TV7/U
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