Matched Pair RCA 12J5 12J5GT Vacuum Tubes NOS NIB

Matched Pair RCA 12J5 12J5GT Vacuum Tubes NOS NIBThis new old stock, new in box (for Tube Two) matched pair of RCA 12J5GT triodes was tested on our Paul Hart calibrated TV7 U for shorts, gas and transconductance. There were no shorts or gas. Tube One measured 81 while Tube Two measured 88. Minimum (65%) is 50. They have tall bases; medium bottles; dimple getters; black ladder plates; excellent flashing and copper support rods. One of the tubes has an inert, glass chip inside. WE HAVE SCORES OF

new in box 10HF8 tubes tested to spec on our Paul Hart-calibrated TV7/U

It measured 40/40 where minimum (65%) is 40/40 and 100% is 62/62

I have played it in my Musical Paradise 301 MK 3 with an adapter (not included) as 6SJ7 substitutes and it sounds great

new in box Tung-Sol 1S4 tubes tested to spec on our Paul Hart-calibrated TV7/U

6 milliamps' plate current while Tube Two drew 18

new in box GE 4BQ7A tubes tested to spec on our Paul Hart-calibrated TV7/U

but most should work in most circuits

new in box RCA 6JT8 tubes tested to spec on our Paul Hart-calibrated TV7/U

I am playing them (with adapters

Noise: -83

This Silvertone 5Y3GT black plate rectifier tube was tested on our Paul Hart-calibrated TV7/U for shorts

These five US-made 14BL11 tubes tested to spec on our Paul Hart-calibrated TV7/U