Up for sale is a laboratory-verified Sylvania JAN-6V6GTY military-grade vacuum tube. This is the highly robust “Y” variant, featuring the low-loss Brown Coin Base and Black Coated Glass. These tubes are legendary for their longevity and balanced, detailed performance in both guitar amps and hi-fi gear.

Tested on the Amplitrex AT1000, the results below follow the Percentage Method relative to original factory specifications (Ip = 45.0 mA / Gm = 4100 µMhos). This tube is New Old Stock (NOS) and exhibits excellent, balanced test results.