This is the military-spec version of a 6L6 vacuum tube, which is known for its durability and reliability, as used by the Russian military.

The 5881WXT is an extremely consistent workhorse power beam tetrode, designed to meet rigorous military standards. It can tolerate higher voltages than most other 6L6 types, making it a dependable choice. It is frequently used to replace older 7027 tubes in vintage Ampeg amplifiers.

Sovtek tubes are renowned for their exceptional quality. We design and manufacture our tubes to meet the highest standards of high fidelity, reliability, and warmth. When it’s time to retube, choose genuine Sovtek vacuum tubes. You’ll be getting the best possible performance for any demanding application.