A Very High Quality Porcelain (Ceramic) B9A Valve Base (Tube Socket) with Screening Can

9 pins with a screening can and shield on the base. Heavy Nickel plated Pins. Test Voltage: 1600V, Insulation resistance >10,000M ohms, Contact resistance: < 10milliohms.

For many Mullard, Brimar, Mazda, EF86, EL84, ECC81, ECC82, ECC83, and American valves inc12AX7, 12AU7, 12AT7 etc.