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6CA7 / EL34 / KT77 tubes
The ElectroHarmonix 6CA7EH big bottle tetrode is the budget sleeper tube of the new production EL34/6CA7/KT77 family. Recommended for demanding, higher voltage amps. These tubes can take the heat! Price includes extended burn-in and precision matching.
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These new production Genalex Gold Lion KT77 power tubes can directly substitute for 6CA7 or EL34 type tubes. Price includes extended burn-in and precision matching.
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These new production Tung-Sol EL34B power tubes have a higher impedance design with increased responsiveness and a hint of the 6L6 sound. Price includes extended burn-in and precision matching.
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The 1959 Amperex EL34 / 6CA7 tubes in this pair have dual D getters and brown bases (Xf4 series). The white labels on the base have the GE logo. Both tubes test as new and and are loosely matched for current draw (31.2 & 34.9 mA) and Gm (96% & 100%).
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The 1966 Mullard EL34 / 6CA7 power tubes in this pair have welded plates and dual O getters (Xf2 series). The Blackburn, UK factory codes are etched in the glass. Tubes are matched for current draw (24.0 & 26.8 mA) and Gm (4800 & 4800).
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The 1966 Mullard EL34 / 6CA7 power tubes in this pair have welded plates and dual O getters (Xf2 series). The Blackburn, UK factory codes are etched in the glass. Tubes are matched for current draw (23.8 & 24.4 mA) and Gm (87% & 90% Gm).
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The Mullard EL34 / 6CA7 power tubes in this pair have welded plates and single O getters (Xf2 series). The white GE logo is missing on one tube. Tubes are matched for current draw (21.8 & 22.0 mA) and Gm (87% & 90%).
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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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