Sovtek 5881WXT power vacuum tube, Platinum Matched Pair Delivers a warm, round tone that "sweetens" any guitar amp design. Extremely consistent from piece to piece, the Sovtek 5881 is one of the most reliable current production 6L6's available. Full size base for easy installation in vintage amp designs. Chances are if an amp uses 6L6-style output tubes, it has Sovtek 5881's in its sockets. Platinum pair (2 tubes), computer-matched by manufacturer on proprietary equipment 6L6 equivalent