SKU:74296624597
Matched Pair General Electric GE 12AU7 12AU7A ECC82 Vacuum Tubes Copper Support Rods
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- USA
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- USA
- CAN
Ships within 48 hours · Estimated delivery Aug 14 - Aug 19
Description
Matched Pair General Electric GE 12AU7 12AU7A ECC82 Vacuum Tubes Copper Support RodsThis matched pair of General Electric 12AU7A ECC82 dual triodes was tested on our Hickok 600A for shorts, gas and transconductance. There were no shorts or gas. Transconductance measured 1800 1750 micromhos for Tube One and 1800 1775 micromhos for Tube Two. (New 12AU7s typically test within one standard deviation of 2200 micromhos. Minimum (65%) is 1430.) These tubes have narrow 19 MM plates, each with three rectangular holes; O getters; copper
new in box RCA 6CK3 / 6CL3 tubes tested to spec on our Paul Hart-calibrated TV7/U
Tube One: 72/78
ladder plates
This new old stock-testing Sylvania engraved base type 48 tube was tested our Paul Hart-calibrated TV7/U for shorts
but I do not recommend using them at any other filament voltage than 12
Tube Four: 42
Please be sure your device has enough current to run them
They are dead quiet when the CD player is paused (I have no preamp) and have excellent frequency response
It measured an almost-perfectly-balanced 71/72 where minimum (65%) is 56/56 and 100% is 86/86
IF YOUR COUNTRY IS SIMILAR
where minimum (65%) is 40
new in box GE 17JB6 tube tested to spec on our Paul Hart-calibrated TV7/U
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