Tung-Sol ONE (1) 6SN7GT AT1000 Weak Vacuum Tube T6 "Tall Boy" black plate dual triode 1956

This listing is for one (1) Tung Sol-made 6SN7GT dual triode vacuum tube in the straight-walled glass tube shape. It has a black bakelite octal base, inward-facing black T plate, and bottom foil getter. Some of our stock is re-labeled or marked with the OEM of Tele-King, Silvertone, Motorola, Zenith, Trav-ler. If you're looking for a particular brand, please message right as you order - we pack and ship quickly!

This is the T6 type that is nearly indistinguishable from Sylvania's Tall Boy tubes, but with T-S mica. Of further interest is the fact that this is the ONLY T-S 6SN7 to use a foil getter, and they all use the FAKE T-S date code 322626 also found on the T1 type. The civilian 6SN7 tubes from Tung Sol have been given "type codes" by Sound by Doc as follows: T1 (pre 1951) GT, medium glass, bottom square getter, parallel ribbed black flat plates with 2 support rods. T2 (1950) rare square mica mouse ears, inward-facing T plates. T3 (1950-2) Mouse ears black T plate. T4 (1952-3) Mouse ears grey T plate. T5 (1953-5) inward-facing grey T plates. T6 (1956) Just like Sylvania "Tall Boy," 2-hole inward-facing black plates. T7 (1956-61) top getter tall glass angled black T plates. T8 (1962) rare medium glass. T9 (1962-6) short glass.

Your tube has been fully tested on a computer-regulated, USA-made Amplitrex AT1000 on Fixed Bias setting with WEAK results. It has also passed shorts and gas tests, but did not meet our requirements for a used, good tube because of weak results in GM or plate current or both. It might work in some circuits, but performance is NOT guaranteed. The tube might have mechanical wear or have the label rubbed off - these are very old! Tubes that test used good or like new (tNOS) are often available in a separate listing. Only tNOS and Used Good tubes are eligible for our 60-day performance guarantee.

OPTIONS (use offer feature in Reverb):

Want a regular white box? $1 extra per tube
Want the test results recorded on your box, too? $3 extra per tube