Ken-Rad etc. Pair (2) VT-152 Power Pentode tNOS AT1000 TESTED Vacuum Tube premium JAN 6K6 6K6GT/G Audio 1941-1958

This listing is for a Pair (2) of VT-152 Power Pentode or premium JAN 6K6 6K6GT/G vacuum tubes in the straight-walled glass tube shape. They have a black bakelite octal base, black plate, and bottom square getter. Labels in stock include Ken-Rad, RCA, Raytheon, NU, GE. Some of our stock is re-labeled or marked with the OEM of Super Silvertone, Delco. If you're looking for a particular brand, please message right as you order - we pack and ship quickly!

Very limited supply - brands will probably not match.

Your tubes have been fully tested on a computer-regulated, USA-made 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 1.6 mA and 2.4 mA AND transconductance must measure between 1040 uMhos and 1560 uMhos, consistent with original 1941 RCA, Western Electric, Sylvania, GE, and/or Tung-Sol datasheet specifications for new tubes of this type. The tubes must also show no shorts, show a gas current less than 0.2 mA, and a heater-to-cathode leakage of less than 10 microamps (10 uA). The tubes 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!

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
Want two tubes that match one another within 5% for GM? $5 extra per tube.
Comfortable using a replaced guide pin? Save $1 (and get the replacement guide pin included, installed!)