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Svetlana 6550C WINGED C Valves/Tubes Eight Svetlana Winged C 6550C . These were made in the Svetlana factory in St. Petersburg, Russia, before it closed in 2012. This factory had been making vacuum tubes for almost a century, and these Winged C are the original Svetlana design and construction. Known for rich, warm tones and excellent clarity. I preferred them in my Audio Research Reference 110 over the Tung-Sol 6550 and KT120. The Winged C 6550 is considered by many to be the best 6550 tube available. All were recently tested on a B&K 747B tester when removed from the Ref 110 with all mea
This is a buyer’s market at the moment: against the recent AUD comparables, A$1,500 is well above the 75th percentile of A$1,072 and more than 3.5x the median A$412, so the asking price looks ambitious, not a bargain. Even allowing for strong examples and a clean cosmetic grade, it is priced at the top end of the current used range rather than in the value zone.
That said, these are highly regarded output tubes, and the “Winged C” variants have a real following for their tone, robustness, and scarcity. If the set is genuinely matched, tested strong, and has low hours with proof, that adds meaningful upside; otherwise, buyers should be very selective at this level and verify matching, test results, and any audible noise or microphonics before paying up.
Independent perspective — not a price guarantee. Always verify condition, accessories and provenance before purchase.
Svetlana is best known as a Russian vacuum-tube brand, rooted in the long industrial history of the Svetlana plant in St. Petersburg. The company traces its origins to Soviet-era tube manufacturing rather than to a modern consumer-audio startup, and the brand name later became tied up in licensing and ownership disputes between Russian and export-market interests. Public sources place its modern Western visibility mainly in the 1990s and early 2000s, with the original “Svetlana” name associated with tubes made in St. Petersburg and later versions sold under different markings.
Its product focus is vacuum tubes for hi-fi and professional audio, especially output and power tubes such as 6550, KT88, and related types used in amplifiers. Svetlana is not generally known as a maker of turntables, speakers, DACs, headphones, or cables. In practice, it sits in the tube-audio segment rather than the broader consumer hi-fi hardware market, and its name is most familiar to amplifier builders, restorers, and tube-rolling enthusiasts.
In the market, Svetlana occupies a niche, specialist position rather than a mass-market one. Among audiophiles, it is remembered for historically respected Russian-made valves and, depending on era and logo, for the complications of identifying genuine stock versus later-branded production. That makes it more of a collector- and enthusiast-recognized tube marque than a mainstream hi-fi brand, with value shaped as much by provenance and version as by the name itself.
See all Svetlana listings on RADAR.
HiFi Forsale
Excellent
Hifitörget
SE
HiFi Forsale
Excellent
StereoNET
AU
StereoNET
AU
