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6X4 / 6202 / EZ90 tubes
This 1960s RCA 6X4 rectifier tube has black plates and a halo getter. The red print on the glass has the RCA logo (may be partial). Tube tests as new.
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This 1950s Sylvania 6X4 rectifier tube has shiny black plates and a windmill getter. The green print on the label has the Sylvania lightning logo. Tube tests as new.
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This 1950s Tung-Sol 6X4 rectifier tube has black "X" style plates and a side D getter. The white label has the Tung-Sol logo. Tube tests as new.
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TC Tubes specializes in precision testing and matching of vintage and new production vacuum tubes for guitar & bass players, audiophiles, and DIY tube audio enthusiasts. Our website features secure payment options and fast, convenient shipping around the world.
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