Tung-Sol ONE (1) 6SJ7GT Pentode tNOS AT1000 Mesh Plate TESTED Vacuum Tube Audio 1938-1959

This listing is for this Tung-Sol 6SJ7GT Pentode vacuum tube in the Straight-walled Glass tube shape. It has a METAL octal base, mesh plate, and top getter. This listing is only for Tung-Sol mesh plate; many other 6SJ7 variants are less expensive.

Your tube has been fully tested on a computer-regulated Amplitrex AT1000 on Fixed Bias setting with like new, NOS results (tNOS). Here's what that means: to qualify for this listing, several stringent conditions must be met: The plate current must measure between 2.4 mA and 3.6 mA AND transconductance must measure between 1280 uMhos and 1920 uMhos, consistent with original 1938 RCA, Sylvania, GE, and/or Tung-Sol datasheet specifications for new tubes of this type. The tube must also show no shorts, show a gas current less than or equal to 0.3 mA, and a heater-to-cathode leakage of less than 10 microamps (10 uA). The tube might have mechanical wear or have the label rubbed off - these are very old! Used-testing tubes are available in a separate listing at a significant discount. Every tube you receive from Sound By Doc is guaranteed against failure for 60 days after purchase, an industry extreme!

These are not stock photos. You get this tube, in this box, with these test results.