Siemens - Paired Tube Set E 280 F NOS Gold Pins Tube amplifier

2 Siemens tubes in NOS / unused condition E 288 F / 7722 Type with gold pins Technical specifications Tube type: broadband pentode (often produced as special quality / S.Q. with gold-plated pins) Socket: 9-pin noval socket Heater: indirect, heater voltage 6.3 V, heater current 0.315 A Usage: Originally developed for professional RF, IF and broadband amplifier applications, today often valued in high-end audio equipment (e.g., phono preamps or DACs). without outer carton, but I assure you these tubes have never been used! The pictures are part of the description. Shipping will be well-packaged and insured

Stima:€150

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