You are bidding for 1 Vacuum tube F2a Vintage UsedSiemens Rohrre made in Germany . F2a = F2a11 Other BaseOriginal Box Siemens Valve Power Audio Amplification used in Shindo desing Base: EU-Telephone 9-pin , Siemens Bottle: LargeGlass: Clear CrystalPlates: Grey Getter: Top O ring Code: 181983 Excellent Tubes NOS 100% new old stock USED , Mint condition working in top condition. Sell as It. see pic. returns are not accepted, real photos. Test Fil. 6.3 V 2 Amp. is OK The F2a is a pentode or tetrode (depending on how one draws the distinction) produced exclusively by Siemens in Germany for professional applications. It is best known as the output tube in some of the most famous of Siemens Klangfilm amplifiers. Klangfilm means sound of cinema or, in modern speak, movies with sound. These amplifiers were employed for theater use and, especially by the Japanese vintage gear cognoscenti, are currently much sought after. Among the most highly prized Klangfilm amplifiers are the KL-203 and 204 models, both of which used either the F2a or F2a11 tube, albeit in single-ended configuration, thus producing about 7 watts.While the F2a tube is rarely found in commercial designs, supply is ample. This is no Trivista, Nuvista or Buena vista deal. Tube life for an F2a is an estimated 10,000 hours and given the Sinhonias circuit, including soft start and stop, the tubes should last a lifetime. Should your tubes fail by chance, fear not - Shindo has an adequate supply in stock. Whats more, these tubes are also available through the usual channels. Shipped very carefully, wrapped and packaged very carefully, I will combine postage on multiple valve orders. plus $ 15 each added tube, See my other listings! Any question, suggestion is welcome. Buyers are also responsible also to pay any customs fees and duties under the laws IMPORTANT for WORLDWIDE eBayers: I ship this item from MEXICO with Parcel Post and I can ship worldwide. After shipping I will supply the number of your parcel. International shipments. By parcel post some time take a little longer than normal in countries like Canada, UK, Australia. I send tracking number for mexico, but in this country need to check at arrivet maybe dont tracking there , I could request a faster shipping EMS with extra cost, thanks for understanding, Thank you. You are Welcome!

Normal 0 14 false false false IT X-NONE X-NONE Four Siemens F2a electronic tubes, very good for high fedelity amplification, for sale. The Valves are sold as pre owned. The getter is in good condition and the filament has been checked(as you can see on the photo) . N.b The shipping price is referred to a sending from Italy to U.S.A For shippings outside USA please ask me for the sendings price.

Ladies and Gentlemen, the legendary F2A11 vacuum tubes. 2 pieces produced under the Klangfilm brand, the rest Siemens. They are great collectors items and amazing sounding vacuum tubes used in the best amplifiers. Measurements indicate that one tube has a short circuit, the others indicate at what voltage, the current value increases abruptly (Check second photo). Im afraid that these copies cannot be used in v69 type amplifiers. So I am selling them as defective. But they can be a great collectors item, as an exhibition, example or subject of research.

Normal 0 14 false false false IT X-NONE X-NONE Four Siemens F2a electronic tubes, very good for high fedelity amplification, for sale. The Valves are sold as pre owned. The getter is in good condition and the filament has been checked(as you can see on the photo) . N.b The shipping price is referred to a sending from Italy to U.S.A For shippings outside USA please ask me for the sendings price.