Plug Play NOVIB Socket Saver©-Center Screw with 1960s NOS USA Socket on Top plus Vibration Reduction Base - 9-pin B9A NOVAL - NOT MADE IN CHINA - For Technicians/DIY/Advanced Users High Reliability Long Life version

High Reliability Long Life version of EF86/EF806S/6267/CV2901/CV4085/M8195 valves

Side note of importance: I volume match the low and high gain settings on my Mjolnir 2 with the use of a sound level meter and test tracks

with their great treble and Mullard’s “lush” midrange response

Handle with care

Plug Play NOVIB Socket Saver©-Center Screw with 1960s NOS USA Socket on Top plus Vibration Reduction Base - 9-pin B9A NOVAL - NOT MADE IN CHINA - For Technicians/DIY/Advanced Users High Reliability Long Life versionOnly recommended for Advanced Users Technicians DIY. NOT recommended for Modern tube gear (most do not have enough clearance for the center screw). You will void your guarantee with the manufacturer (installation requires opening and disassembly). Danger of electric shock unplug unit before installing NOVIB CS. If you don't know what you are doing you are likely to damage your gear. We are not responsible for anything if you screw up your gear while