Matched Pair RCA 6C8 6C8G Vacuum Tubes 6SL7 Substitute NOS NIB OMPC new in box GE 38HE7

new in box GE 38HE7 tube tested to spec on our Paul Hart-calibrated Hickok TV7/U

There are a total of four separate sections

mesh plate tubes tested 42 and 50 on our Paul Hart-calibrated TV7/U where minimum (65%) is 25 and 100% is 38

This RCA 6JE6A tube tested 93 on our Paul Hart-calibrated TV7/U where minimum is 54 and new is 100

There is no listening report as this LP is still sealed

Matched Pair RCA 6C8 6C8G Vacuum Tubes 6SL7 Substitute NOS NIB OMPC new in box GE 38HE7This beautiful new old stock, new in box (for Tube One) matched pair of RCA 6C8G dual triodes was tested on our Paul Hart calibrated TV7 U for shorts, gas and transconductance. There were no shorts or gas. Transconductance measured 50 52 for Tube One and 53 52 for Tube Two where minimum (65%) is 25 25 and 100% is 39 39. They have dimpled, sheet getters; wire snubbers for lowered microphonics; smooth round bottom and top mica spacers; dark gray rounded