9 National Union NU Number Type 27 #27 Vacuum Tubes Lot Of Nine 9 Lot Of Nine The 1X2 has been revised

The 1X2 has been revised to "1X2A"

I have listened to it in my Bottlehead Crack headphone amplifier and it sounded great

These seven new old stock

Getters: bottom

Tube One measured 73/74 while Tube Two measured 78/75 where minimum (65%) is 50/50 and 100% is 77/77

9 National Union NU Number Type 27 #27 Vacuum Tubes Lot Of Nine 9 Lot Of Nine The 1X2 has been revisedThese nine National Union number type 27 tubes tested as good on our Paul Hart calibrated TV7 U. Transconductance readings are 25, 27, 28, 30, 30, 32, 32, 34 and 35 where minimum (65%) is 25. 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