4 Sylvania 7A6 Vacuum Tubes Valves NOS NIB Lot Of Four

4 Sylvania 7A6 Vacuum Tubes Valves NOS NIB Lot Of FourThese four new old stock, new in box Sylvania 7A6 tubes 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

Tube One Plate Current Draw: 25

Transconductance measured micromhos with a plate current draw of milliamps

Both tubes measured 30 where minimum (65%) is 22

side D-getters and excellent flashing

I have played it in my Musical Paradise 301 MK 3 with an adapter (not included) as a 6SJ7 substitute and it sounds excellent -- airy with excellent dynamics and signal bandwidth

Both tubes measured 69 where minimum (65%) is 55

TUBES ARE GUARANTEED GOOD ON SHIPMENT

they can put out as much as 2A3s and fell into disfavor because of socket supply issues

3 milliamps' plate current while Tube Two drew 23

Tube One drew 24

1 milliamps with a transconductance of 2260 micromhos while Tube Two measured 23

This new old stock-testing matched pair of National Union-MANUFATURED Type 37 triodes was tested on our Paul Hart-calibrated TV7 For shorts