Matched Pair Toshiba 6FQ7 6CG7 Vacuum Tubes Copper Support Rods Telefunken Drawer Johnson porcelain

Johnson porcelain

This matched pair of Sylvania-MANUFACTURED 6X5GT rectifier tubes was tested on our Paul Hart-calibrated TV7/U for shorts

three (rather than two) mica spacers for improved mechanical stability and low microphonics

This lot of two National Union type 85 tubes was tested on our Paul Hart-calibrated TV7/U for shorts

Matched Pair Toshiba 6FQ7 6CG7 Vacuum Tubes Copper Support Rods Telefunken Drawer Johnson porcelainThis 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 67 in Section One and 68 in Section Two for Tube One and 69 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