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). 
Other SED tubes
 6550 TypesClick image to enlarge Availability: Usually ships within 24 hours. |
| ||
| Questions about power tube matching? Do you need a matched quad? | |
|
 Top of Page The easiest way to buy vacuum tubes. |