NEC 4MP12 4M-P12 Vacuum Tube Valve NOS NIB

NEC 4MP12 4M-P12 Vacuum Tube Valve NOS NIBThis NEC 4M P12 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 PURCHASE PROTECTION COVERS ITEMS UP TO $250 IN VALUE. IF AN ITEM IS

These three US-made milspec VR-150 / VT-139 / 0D3A tubes tested to spec in our Hickok 800

WE MAY HAVE IT

It measured 84/82 where minimum (65%) is 50/50 and 100% is 77/77

Wish I could tell you who actually made them

Tubes Two through Seven tested 40/38

All of these tubes have very-good-testing triodes and each has a strong-testing as well as a functioning diode

68 and 74 where minimum (65%) is 52 and 100% is 80

where minimum (65%) is 29 and 100% is 45

5 volts with adapters (not included) and they sound tremendous even though they straddle the cusp and are running with a lowered filament voltage

They measured 52/52

(New US-made 6BG6s typically test with plate current readings from the mid 20s to mid 50s with transconductance within a standard deviation of 2300 micromhos or so

top O getter and excellent flashing