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RCA 6680 12AU7 12AU7A ECC82 Vacuum Tube Valve Industrial Version NOS-Testing Perfect For Univalve And Bottlehead Number Engraved It tests below the cusp
RCA 6680 12AU7 12AU7A ECC82 Vacuum Tube Valve Industrial Version NOS-Testing Perfect For Univalve And Bottlehead Number Engraved It tests below the cusp
$22.20
Description
It tests below the cusp
The following artists contributed to this tape: Gervase DePeyer
It comes with a box
Tube Three (diodes): 79/40
RCA 6680 12AU7 12AU7A ECC82 Vacuum Tube Valve Industrial Version NOS-Testing Perfect For Univalve And Bottlehead Number Engraved It tests below the cuspThis new old stock testing RCA 6680 12AU7A ECC82 dual triode was tested on our Paul Hart calibrated TV7 U for shorts, gas and transconductance. There were no shorts or gas. Transconductance measured a nicely balanced 92 95 where minimum (65%) is 56 56 and 100% is 87 87. The 6680 is the industrial version of the 12AU7A. It has gray 12MM plates; excellent flashing for an extremely hard vacuum and extended tube life and a top O getter. I have played it
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