Matched Pair Toshiba 6FQ7 6CG7 Vacuum Tubes Copper Support Rods Oris 20MM End Link

Matched Pair Toshiba 6FQ7 6CG7 Vacuum Tubes Copper Support Rods Oris 20MM End LinkThis 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 73 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

They have shoulder / Coke bottles and are perfect for the restorer who wants absolute historical accuracy

59-13 188-5 and 57-26 188-5 date/factory codes

Philco-BRANDED 5Y3GT rectifier tube was tested on our Paul Hart-calibrated TV7/U for shorts

Not for use in guitar and bass amps

This Sylvania 5U4G rectifier tube was tested on our Paul Hart-calibrated TV7/U for shorts

There are a few glass fragments inside the bottle

even though they test on the cusp

These five Philco Type 37 triodes were tested on our Paul Hart-calibrated TV7/U for shorts

54 and 66 where minimum (65%) is 42

Gain (Mu (µ): 16

THE PRODUCT DEVELOPMENT AND IMPROVEMENT CYCLE IS OV

All three DVDs are present and play fine