Here I am selling five x Telefunken ECC801s twin triode tubes. This auction is for all five tubes. These are all new in box (NIB). Four of the boxes are still sealed, as they were when they left the Ulm, West Germany factory in 1965. One of the tubes have been removed from its box to test and inspect it. You can see from the photographs that the original guarantee certificate matches the code on the tube and that it is in pristine condition. Also in the photograph you can see the raised diamond on the base signifying an original Telefunken tube. Test results with a1/a2 = 250VDC & g1/g2 = -2 VDC are as follows; Ia1 = 7.2ma 1a2 = 9.0ma Gm triode 1 = 3.8mA/V Gm triode 2 = 4.4mA/V Identification Codes: Factory = Ulm Date = 23 Month = May Year = 1965 I will ship internationally once funds have been received. If you have any questions please ask.

Here I am selling five x Telefunken ECC801s twin triode tubes. This auction is for all five tubes. These are all new in box (NIB). Four of the boxes are still sealed, as they were when they left the Ulm, West Germany factory in 1965. One of the tubes have been removed from its box to test and inspect it. You can see from the photographs that the original guarantee certificate matches the code on the tube and that it is in pristine condition. Also in the photograph you can see the raised diamond on the base signifying an original Telefunken tube. Test results with a1/a2 = 250VDC & g1/g2 = -2 VDC are as follows; Ia1 = 7.2ma 1a2 = 9.0ma Gm triode 1 = 3.8mA/V Gm triode 2 = 4.4mA/V Identification Codes: Factory = Ulm Date = 23 Month = May Year = 1965 I will ship internationally once funds have been received. If you have any questions please ask.

Aus alten Sammlungsbestand abzugeben.:ECC801S/ECC801 TELEFUNKEN, Orig.Bundeswehr Verp. , Neu, OVP.Geprüft. Optischer Zustand siehe Bilder, teil der Beschreibung. Aufgrund des Alters keine Garantie auf Funktion. Dies ist ein Privatverkauf, keine Rücknahme , keine Garantie .Irrtümer vorbehalten. Kosten für die Rücksendung trägt der Käufer.Mit Abgabe des Gebotes haben Sie die Bedingungen akzeptiert., From old collection stock to give away.:ECC801S/ECC801 TELEFUNKEN, orig.german military box. Tubes are tested, Optical condition see pictures, part of the description. Due to age no guarantee on function. This is a private sale, no return , no warranty . The buyer bears the return postageBy placing a bid you have accepted the conditions.Shipment only germany/ EU. Currently no shipping to Russia/ China.Other countries request before.

Here I am selling five x Telefunken ECC801s twin triode tubes. This auction is for all five tubes. These are all new in box (NIB). Four of the boxes are still sealed, as they were when they left the Ulm, West Germany factory in 1965. One of the tubes have been removed from its box to test and inspect it. You can see from the photographs that the original guarantee certificate matches the code on the tube and that it is in pristine condition. Also in the photograph you can see the raised diamond on the base signifying an original Telefunken tube. Test results with a1/a2 = 250VDC & g1/g2 = -2 VDC are as follows; Ia1 = 7.2ma 1a2 = 9.0ma Gm triode 1 = 3.8mA/V Gm triode 2 = 4.4mA/V Identification Codes: Factory = Ulm Date = 23 Month = May Year = 1965 I will ship internationally once funds have been received. If you have any questions please ask.

Telefunken ECC801S Röhre Rarität sehr selten .Made in Germany.Voll funktionsfähig.

General Info telefunken ecc801s (compatible to all ECC81/12AT7 tubes) Diamond bottom <>, 10 pieces in original box!!! Never used! All Tubes have the same date code (U5105204a) This means: Produced in Ulm on February 15, 1965 These tubes are considered the best 12AT7/ECC81 tubes ever made. Testing Tested at Ua =250V, Rk = 200 Ohm. Ia under this conditions (according to datasheet): 7-14 mA Measured ia: (Triode 1/Triode 2) 9.5 / 10.1 mA 9.4 / 10.4 mA 9.4 / 10.1 mA 9.8 / 9.9 mA 9.4 / 10.1 mA 9.8 / 9.9 mA 9.5 / 10.3 mA 9.8 / 9.9 mA 9.8 / 10 mA 9.3 / 10.3 mA All tubes show very similar values. As you can see, some are incredibly close!!! You wouldnt even find such close tolerances in todays transistors!!! Shipping I will make sure the tubes are properly packed for shipping. For countries outside of Europe, please contact me first, because shipping cost might be higher! I will send the tracking Number, as soon as the tubes are shipped.