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2A3 vacuum tube made by Sovtek - directly-heated power triode. Sovtek tubes are quite simply the absolute best. We design and manufacture our tubes, engineered for demanding high fidelity, reliability and overall warmth. Be sure to insist on genuine Sovtek vacuum tubes the next time you retube -- you'll be getting the absolute best possible tubes for any demanding application
When ordering a pair or it`s multiples, the tubes are matched free of charge in configurations: pair, quad, sextet or octet.