Mullard 6EC4 6EC4A EY500 Vacuum Tube Valve NOS NIB

Mullard 6EC4 6EC4A EY500 Vacuum Tube Valve NOS NIBThis new old stock, new in box Mullard MANUFACTURED, Sylvania BRANDED 6EC4A EY500 tube tested to spec on our Paul Hart calibrated TV7 U. WE HAVE SCORES OF THOUSANDS OF VACUUM TUBES. IF IT'S NOT LISTED, WE MAY HAVE IT. PLEASE ALSO SEE OUT ETSY SISTER SITE "LOWTECHTWOO" AND OR CALL OR TEXT US AT 202 372 6931 IF YOU DO NOT SEE WHAT YOU NEED OR HAVE ANY QUESTIONS. 1. MOST FORMS OF SHIPPING EXCEPT MEDIA MAIL ARE AUTOMATICALLY INSURED UP TO $100. ETSY

Plate Current Draw: 31 Plate Current Draw: 34

black T plates

This matched pair of Sylvania gray glass 7C5 tubes was tested on our Maxi-Matcher 2 with 400 volts on the plates and a bias of -36 volt for shorts

copper support rods mica snubbers

Tube One drew 21 milliamps' plate current while Tube Two drew 22

ONE IS MISSING

but I'll say it again: It is an Ohmite 25 Watts

These are ultra-low-noise

4 milliamps where new Russian EL84s typically test from the mid 20s to mid 60s with transconductance from 5000 micromhos

This Matsushita 12FQ7 dual triode was tested on our Paul Hart-calibrated TV7/U for shorts

I am playing them now in my Mini 2013 as I write and they sound excellent

new in box premium GE Five Star 6203 tested to spec on our Paul Hart-calibrated TV7/U