Matched Pair General Electric GE 12BH7 12BH7A Vacuum Tubes 12AU7 Substitute For Tube Rolling NOS-Testing NOS NIB Mesh Plate milspec Sylvania 3Q5GT / JAN-CHS-3Q5GT

milspec Sylvania 3Q5GT / JAN-CHS-3Q5GT / VT-221 tubes tested to spec on our Paul Hart-calibrated TV7/U

As you can see

77/52 and 82/48 where minimum (65%) is 50/40

Der Hirt Auf Dem Felsen

new in box RCA 8CX8 tube tested to spec on our Paul Hart-calibrated TV7/U

Matched Pair General Electric GE 12BH7 12BH7A Vacuum Tubes 12AU7 Substitute For Tube Rolling NOS-Testing NOS NIB Mesh Plate milspec Sylvania 3Q5GT / JAN-CHS-3Q5GTThis new old stock testing matched pair of GE 12BH7A 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 58 60 while Tube Two measured 60 60 where minimum (65%) is 30. These tubes have gray plates; copper support rods; excellent flashing; top harp lyre getters and black anode radiators for improved cooling and longer tube life. WE HAVE SCORES OF THOUSANDS OF