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A Very High Quality Porcelain (Ceramic) B7G Valve Base (Tube Socket), with heavy gold plating. Test Voltage: 1600V, Insulation resistance >10,000M ohms, Contact resistance: < 10milliohms. For Many small Valves inc EB91, EF95, Z77, EL90, EK91, EL95, N77, 6AM5, 6AL5 etc.
Very High Quality Porcelain (Ceramic) Octal Valve Base (Tube Socket). 8 pins. Heavy Gold Plating. Test Voltage: 1600V, Insulation resistance >10,000M ohms, Contact resistance: < 10 milliohms. For many Large Output Valves inc EL34, KT66, KT88, 6L6, 6551, 5881, GZ34, 5U4G. Versatile flange can be mounted above or below the chassis.