Matched Pair Siemens Valvo EF86 NOS NIB Audio Frequency Tubes 6CF8 Same Date
The EF86 is a high gain pentode designed to amplify low-level audio signals. NOS / NIB Tubes. Strong NOS & balancec test results. All our tubes are tested for shorts and gas leak. Result: Ia = 6 & 6 mA (3 = 100 %).