The Winged "C" (SED) 6550C is an ideal replacement for amplifiers with GE 6550A tubes. From our 6550 tube type listening test: "The Winged "C" 6550C has very controlled sound - nothing offensive can be found in any part of the frequency response. Also very consistent in detail and separation, with clean highs and exceptional balance throughout." This 6550 tube is a popular choice in Audio Research amps; check out this article by one our customers on how to rebias your Audio Research amp yourself (and save a bundle of money on tubes). Availability: Usually ships within 24 hours. 
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 6550 Types |
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