Matched Pair General Electric GE 12AU7 12AU7A ECC82 Vacuum Tubes Copper Support Rods

Matched Pair General Electric GE 12AU7 12AU7A ECC82 Vacuum Tubes Copper Support RodsThis matched pair of General Electric 12AU7 ECC82 dual triodes was tested on our Paul Hart calibrated TV7 U for shorts, gas and transconductance. There were no shorts or gas. Tube One measured 70 74 while Tube Two measured 71 69 where minimum (65%) is 56 56 and 100% is 87 87. These tubes have narrow 19 MM plates, each with three rectangular holes; O getters; copper support rods and good flashing. I have played them in my Radio Craftsmen RC 2

Tube One measured 43 while Tube Two measured 45 where minimum (65%) is 27

it has no gross issues such as hum or microphonics and will work excellently in your audio device that calls for a 12AT7

I am playing them as I write in on of my Sound Craftsmen RC-2 monoblock amplifiers with RCA Living Stereo's CD of Bartok's "Concerto For Orchestra

please select “2” from the quantity box

the sound is quite good and since the crackles are constant and low-level

I am playing them in my Sound Craftsmen RC-2 monoblock amplifiers with the included adapters and they sound outstanding

These twelve US-made mesh plate 6F7 tubes were tested for shorts gas and transconductance on our Paul Hart-calibrated TV7/U and tested as follows:

WE HAVE ACCESS TO THE SAME INFORMATION YOU DO AND IT IS YOUR RESPONSIBILITY TO DEAL WITH THE USPS SHOULD THERE BE DELAYS OR LOSS OF A SCANNED PACKAGE

new in box Trigon UCH81 tube tested to spec on our Paul Hart-calibrated TV7/U

new in box Westinghouse 7A8 tubes tested to spec on our Paul Hart-calibrated TV7/U

PLEASE ALSO SEE OUT ETSY SISTER SITE "LOWTECHTWOO" AND/OR CALL OR TEXT US AT 202-372-6931 IF YOU DO NOT SEE WHAT YOU NEED OR HAVE ANY QUESTIONS

new in box RCA 21KA6 tubes