Pair of Sovtek 5881WXT

The Sovtek 5881WXT tube is a reliable beam tetrode delivering a warm, round tone that “sweetens” any vintage or modern guitar tube amp design. Built to rigid military standards, the Sovtek 5881WXT will tolerate higher voltages than most other 6L6 tubes. This tube is commonly found relabeled by Fender and Groove Tubes to GT-6L6B. Mesa Boogie relabels them STR425.

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