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Svetlana EL509 / EL519 / 6KG6 High Performance Beam Power Tetrode
The Svetlana EL509 is a beam power tetrode intended for use in class A, AB or B audio amplifiers and for class B or C RF amplification. Close manufacturing specification tolerances and improved high voltage processing provides improved reliability and superior performance. The Svetlana EL509 features: Increased peak cathode emission from new cathode materials; Stable operation from extended processing and aging; Gold-plated grid; Precise grid/screen alignment; Extraheavy glass envelope for ruggedness; Improved vacuum processing; Comprehensive testing before and after aging. The Svetlana EL509 is manufactured in Russia at the Svetlana factory and is designed to be a direct replacement for any 6KG6 or EL509.