Up for sale is a strong matched pair (2 Pcs) of legendary vintage NOS military-grade Ken-Rad JAN 12SN7GT dual triode vacuum tubes, packed in white boxes. Manufactured in the USA to rigorous Joint Army-Navy (JAN) standards, these rare valves feature heavy black plate  a bottom square getter, and a durable black base. Legendary for delivering unmatched bass authority, rich low-end slam, deep holography, and sweet midrange body, Ken-Rad 6SN7/12SN7 variants remain top-tier choices for high-end audio preamplifiers and driver stages.

Both tubes have been tested on an Amplitrex AT1000 automated valve tester at nominal factory specs. Anode current (Ip) and Mutual Conductance (uMhos) measurements alongside percentage performance ratings relative to standard specs are detailed in the table below.