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6CA4 / EZ81 tubes
This early 1960s GE 6CA4 / EZ81 tube has gray plates and a halo getter. The red or white print on the glass has the GE logo. Tube tests as new.
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This 1963 Mullard EZ81 / 6CA4 rectifier tube was made in Great Britain. It has gray plates and a D getter (8t1 series). The red print on the glass is labeled for 3M and the Blackburn UK factory code is etched in the glass. Tube tests as new
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This 1959 Mullard EZ81 / 6CA4 rectifier tube has gray plates and a D getter. The white print on the glass has the early shield logo and the Blackburn UK factory code is etched in the glass. Tube tests as new.
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This 1970s RCA 6CA4 / EZ81 has gray plates and a halo getter. The red print on the glass has the RCA logo. Tube tests as new.
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This 1960s Sylvania 6CA4 / EZ81 has gray plates and a halo getter. The green print on the glass has the Sylvania 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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