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.