5 RCA 6BK4 6BK4A 6EL4 6EL4A Vacuum Tubes Valves NOS NIB Lot Of Five

5 RCA 6BK4 6BK4A 6EL4 6EL4A Vacuum Tubes Valves NOS NIB Lot Of FiveThis lot of five new old stock, new in box RCA 6BK4 6BK4A tubes tested to spec on our Paul Hart calibrated TV7 U. Four are 6BK4A. 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

This lot of three Matsushita 8FQ7 / 8CG7 dual triodes was tested on our Paul Hart-calibrated TV7/U for shorts

Transconductance measured 41/42 where minimum (65%) is 21

Plates: black/dark gray rounded plate

WE MAYHAVE IT

It is dead quiet when the volume is muted and has excellent frequency response

WE HAVE SCORES OF THOUSANDS OF VACUUM TUBES

60 and 82 where 40 is minimum

These four metal base National Union 6Q7GT tubes tested to spec on our Paul Hart-calibrated TV7/U

new in box RCA 1G3GT / 1B3GT rectifier tubes tested to spec on our Paul Hart-calibrated TV7/U

These are ultra-low-noise

Conductance: 1475 / 1690

Plate current draw was 33