Until around 2000, all Svetlana vacuum tubes bore the S logo, were produced at the Svetlana factory in Saint Petersburg under the Russian Svetlana JSC, and distribution was handled by the US-based Svetlana Electron Devices (SED), the global代理店.
The S logo trademark was sold to New Sensor (NS) in the US in 2001 when SED went bankrupt, as part of debt settlement. From this time, Svetlana JSC switched all vacuum tube logos produced at the Svetlana factory to the С logo (Winged-C).
These S logo Svetlana vacuum tubes are produced at the NS company's Reflektor factory in Salatov, Russia (the same factory as Electro-Harmonix), and are sold under the S logo Svetlana by NS.
The Svetlana (S Logo) vacuum tubes available here are subjected to thorough aging using domestic automatic sorting machines, then measured for high-precision characteristics, and assigned a 13-digit serial number (attached to the box). After measurement, they are matched and shipped. The error margin for pairs measured by NS often varies by about several tens of percent even under the same testing conditions. However, this high-precision sorting keeps the pair error within 5% (depending on measurement conditions).
Anything outside the electrical characteristics of the product (damage to other equipment, tilt of the valve, height of the valve, missing logos, etc.) is not covered by the warranty.
| Product # | 4582296967077 |
|---|---|
| Specifications |
種類: 出力管<br>管種 |
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