Matched Pair Lafayette 6J7 6J7GT Vacuum Tubes Glass Bottles

Matched Pair Lafayette 6J7 6J7GT Vacuum Tubes Glass BottlesThis matched pair of Lafayette glass bottle 6J7GT tubes was tested on our Paul Hart calibrated TV7 U for shorts, gas and transconductance. There were no shorts or gas. Tube One measured 37 while Tube Two measured 40 where minimum (65%) is 31. Wish I could tell you who actually made them! I have played them in my Musical Paradise 301 MK 3 with adapters (not included) as 6SJ7 substitutes and they sound excellent airy with excellent dynamics and signal

new in box Sylvania 5U8 tubes tested to spec on our Paul Hart-calibrated TV7/U

these tubes were made in the Soviet Union during the Cold War and as such should be great for Godless Death Metal music

This new old stock-testing matched pair of Ken-Rad 6V6GT output tubes was tested on our Maxi-Matcher 2 with 400 volts on the plates and a bias of -36 volts for shorts

They have short bases

These nine RCA 17BE3 / 17BZ3 tubes tested to spec on our Paul Hart-calibrated TV7/U

This Wizard type 80 rectifier tube was tested on our Paul Hart-calibrated TV7/U

" Tube one has a brown base and 59-43 date codes while Tube Two has 1-17 date codes and a black base

5 standard deviations of 3600 micromhos and tend to be rather erratic readings-wise like their 12AT7 cousins)

This pair of GE black plate 6CG7 / 6FQ7 dual triodes was tested on our Paul Hart-calibrated TV7/U for shorts

new in box Cunningham 14F7 tube tested to spec on our Paul Hart-calibrated TV7/U

new in box GE 6LE8 tubes tested to spec on our TV7

This matched pair of Lafayette glass bottle 6J7GT tubes was tested on our Paul Hart-calibrated TV7/U for shorts