Matched Pair General Electric GE 6SN7 6SN7GTB Vacuum Tubes Copper Support Rods Top Filament NOS NIB Records HS 11147

Matched Pair General Electric GE 6SN7 6SN7GTB Vacuum Tubes Copper Support Rods Top Filament NOS NIB Records HS 11147This new old stock, new in box matched pair of GE MANUFACTURED 6SN7GTB dual triodes was tested on our Paul Hart calibrated TV7 U for shorts, gas and transconductance. There were no shorts or gas and transconductance measured as follows: Tube One: 79 72 (GE MANUFACTURED, Amperex LABELED) Tube Two: 82 76 Bogey: Minimum (65%) is 50 50; 100% is 77 77 Physical Characteristics: Bases: tall Bottles: medium height Date Codes: none and MY, respectively EIA

Transconductance measured 2000/1900 micromhos for Tube One and 2000/2000 micromhos for Tube Two

Sylvania-LABELED 11BM8 tested to spec on our Paul Hart-calibrated TV7/U

Tube One measured 74/74 while Tube Two measured 75/75 where minimum (65%) is 50/50 and 100% is 77/77

Tube Two measured 2930/21

IN OVER 6000 SALES

WE HAVE HAD A DOZEN OR SO LESS-THAN-FOUR-STAR REVIEWS OR HAVE LOST A CUSTOMER BECAUSE WE REFUSED TO EITHER ISSUE A REFUND FOR A TUBE THAT WENT BAD AFTER IT HAD BEEN USED OR A BUYER DID NOT LOOK AT THE PICTURES AND/OR READ A DESCRIPTION THOROUGHLY

This lot tests low in some cases and uneven in all

5-9 out of ten

These five GE 6F5s were tested on our Paul Hart-calibrated TV7/U for shorts

new in box RCA 13GF7 13GF7A tubes tested to spec on our Paul Hart-calibrated TV7/U

new in box Shield 6AS5 tube tested to spec on our Paul Hart-calibrated TV7/U

Two are American and one is Japanese