Tung-Sol 0B3 OB3 Vacuum Tube Valve NOS NIB

Tung-Sol 0B3 OB3 Vacuum Tube Valve NOS NIBThis Tung Sol 0B3 OB3 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

I just cleaned this LP on my VPI 16

new in box Sylvania 6BY5G tube tested to spec on our Paul Hart-calibrated TV7/U

Transconductance readings are 25

Transconductance measured 41/49 for Tube One and 44/44 for Tube Two where minimum (65%) is 32/32 and 100% is 49/49

Both tubes measured 72 where minimum (65%) is 55 and 100% 85

transconductance and gain and on our TV7/U for a more-commonly-used reference

It has outstanding silkscreening

coke-bottle-shape glass envelopes and terrific flashing

This lot of eight new old stock

They measured 31 and 32 where minimum (65%) is 28 and 100% is 43

tube itself neverless solidly-cemented to base

This RCA 0A4G regulator tube tested to spec on our Paul Hart-calibrated TV7/U