Svetlana Winged C Tubes: The Legendary Russian Vacuum Tubes

• Winged C (SED) tubes were manufactured in Saint Petersburg and are generally considered premium tubes for hi-fi and guitar amplifiers.
• Around 2001, rights to the Svetlana brand name in the U.S. and Canada were acquired by New Sensor. After that, tubes from the original Saint Petersburg factory were sold under the Winged C / SED designation in those markets.
• The original Saint Petersburg production of Winged C tubes ceased around 2011–2012, making genuine examples increasingly scarce and collectible.
• Common Winged C models include EL34, 6L6GC, 6550C, and KT88 variants

Because production ended years ago, any "new" Winged C tubes on the market today are typically:

1. Genuine old stock (NOS or NIB),
2. Used pulls,
3. Or occasionally counterfeits, so buying from Hot Rox UK will ensure genuine and tested Winged 'C' NOS Valves