Matched Pair RCA Clear Top 12HG7 12BY7 Vacuum Tubes NOS-Testing Most Requested new in box RCA 6EH5

new in box RCA 6EH5 tubes tested to spec on our Paul Hart-calibrated TV7/U

but should work fine

Dynamic range is excellent as this album goes from ethereal to raucous and back

These eight new old stock

steel support rods and a 28 backwards-7 code embossed within the Telefunken diamond (<>) in its base

Matched Pair RCA Clear Top 12HG7 12BY7 Vacuum Tubes NOS-Testing Most Requested new in box RCA 6EH5This new old stock testing matched pair of RCA clear top 12HG7 tubes was tested on our Paul Hart calibrated TV7 U (on the 12BY7 setting) for shorts, gas and transconductance. There were no shorts or gas. Tube One measured 80 while Tube Two measured 82 where minimum (65%) is 46 and 100% is 71. These tubes have anode radiators for cooler operation and longer tube life; side O getters and excellent flashing. WE HAVE SCORES OF THOUSANDS OF VACUUM TUBES.