The Svetlana KT88 Winged C Valves, produced at the St. Petersburg factory until 2012, represent a rare discovery of a modern classic vacuum tube. Subsequent versions were not manufactured by Svetlana Electron Devices (SED) in St. Petersburg, but rather at the Reflektor factory in Saratov, which is the same facility that produces Sovtek, Electro-Harmonix, and others.

The Svetlana KT88 Winged C is one of the most respected KT88 power tubes ever produced, prized by guitarists, bassists, and hi-fi enthusiasts alike. Known for its robust construction and musical response, the Winged C offers tight, punchy low end, rich harmonic detail, and a smooth top end that cuts without harshness. Ideal for high-power amplifiers, this tube delivers both reliability and exceptional tonal character, making it a sought-after choice for players and audiophiles who demand the very best from their gear.