Help to shield and block your AV system from unwanted noise and RF, RFI, EMI emissions.
Prevent and stop dust & dirt from building up in unused open RCA connectors.
Connect the Caps to unused connectors in audio systems, cables and instruments to eliminate RFI, EMI interference.
All copper material with nickel plating. Protect the ports from dust and oxidation, is suitable for DVD amplifier, AV receiver, AV switch box or other audio video system.