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"

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

Both measured 62 where minimum (65%) is 34

anode coolers for cooler operation and longer life

I am listening as I write and this album sounds very good with only an occasional click and pop

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