Matched Pair General Electric GE 12AU7 12AU7A ECC82 Vacuum Tubes Copper Support Rods Compactron new in box Zenith 6GV5

new in box Zenith 6GV5 tube tested to spec on our Paul Hart-calibrated TV7/U

but were fine at all volume levels in the MP-301

This new old stock-testing matched pair of Ken-Rad 6V6GT output tubes was tested on our Maxi-Matcher 2 with 400 volts on the plates and a bias of -36 volts for shorts

Both the DVD and CD play fine

firmly-cemented to their bases

Matched Pair General Electric GE 12AU7 12AU7A ECC82 Vacuum Tubes Copper Support Rods Compactron new in box Zenith 6GV5This nicely 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 65 66 while Tube Two measured 69 64 where minimum (65%) is 56 56 and 100% is 87 87. These tubes have narrow 19 MM plates, each with two rectangular holes; O getters; copper support rods and excellent flashing. I have played them in my Radio Craftsmen RC 2