NXWVPC Vacuum Tube Shield Aluminum Alloy 9G-55 Shield Caps for 9 Pin 12AX7 12AU7 12AT7 Tubes, Silver

these shields fit the bases already installed in an older stereo preamp. They made a minor but measurable reduction in noise, in the phono section where I installed them. Good price, look nice.

I purchased a used tube amp that was missing tube shields. These were a perfect replacement.

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