Matched Pair General Electric GE 6K6 6K6GT Vacuum Tubes Black Glass 6K6GT OG

Matched Pair General Electric GE 6K6 6K6GT Vacuum Tubes Black Glass 6K6GT OGThis matched pair of GE 6K6 6K6GT tubes was tested on our Maxi Matcher 2 with 325 volts on the plates and a bias of 36 volts for shorts, gas, plate current and transconductance. There were no shorts or gas. Tube One measured 1630 micromhos, 23. 6 milliamps' plate current. Tube Two measured 1490 23. 88. New nominal is within one standard deviation of 1900. These tubes have copper support rods; rectangular mica spacers; black and silver bottles and 3 52

(New US-made 6550s typically test with plate current from the low 20s to mid 40s with transconductance from 3500 micromhos or so

I have played them in my Radio Craftsmen RC-2 monoblocks and they sound great

There is also a shield between the triodes for reduced cross talk

allowing the listener to focus on every particular aspect of this album's vocalists and arrangements

new in box GE 8CG7 / 8FQ7 tubes tested to spec on our Paul Hart-calibrated TV7/U

new in box European-MADE

This matched pair of Sylvania Type 27 triodes was tested on our Paul Hart-calibrated TV7/U for shorts

They have 7-09 188-5 and 630 188-5 date/provenance codes

Date Codes: 1-43 and NK

IN NEARLY 9000 SALES

These seven Philco number / type 27 tubes tested as good on our Paul Hart-calibrated TV7/U

It measured 50/46 where minimum (65%) is 40/40 and 100% is 62/62