Matched Pair Toshiba 6FQ7 6CG7 Vacuum Tubes Copper Support Rods 6W4GT T34 This Tung-Sol 9BR7 tube tested

This Tung-Sol 9BR7 tube tested to spec on our Paul Hart-calibrated TV7/U

black and silver bottles and 3-52 188-5 and 635 188-5 provenance/date codes

This matched pair of GE 25L6GT tubes were tested on our Paul Hart-calibrated TV7/U for shorts

The picture of the movement was taken before it was sent to be serviced

Matched Pair Toshiba 6FQ7 6CG7 Vacuum Tubes Copper Support Rods 6W4GT T34 This Tung-Sol 9BR7 tube testedThis matched pair of 6FQ7 dual triodes was tested on our Paul Hart calibrated TV7 U for shorts, gas and transconductance. There were no shorts or gas. Transconductance measured 73 in Section One and 72 in Section Two for Tube One and 75 70 in Tube Two where minimum (65%) is 50 50 and 100% is 77 77. They have short, gray plates; O getters; copper support rods and excellent flashing. As I write, I am playing them in my Sound Craftsmen RC 2 monoblocks