WA-Quantum RCA Cap


Protects your unused RCA in- and/or outputs from RFI, EMI & dust

Everyone knows that noise and distortion are bad for audio reproduction, destroying precious detail and smearing resolution. Your open RCA in- and outputs are channeling RFI and EMI noise right into the heart of your components. Cover all the unused RCA in- and outputs in your system caps and keep this distortion from getting into your components. Unlike traditional shorting plugs, these caps do not short the in- or outputs (some preamps do not like having their outputs shorted). Caps slide right over unused RCA jacks and will provide both sonic and environmental protection.


  • Eliminates RFI on your unused in- and/or outputs
  • Prevents corrosion and ingress of dust
  • WA-Quantum treated; harmonizes electrosmog at unused in- & outputs
  • Made of brass with a Teflon insulator
  • 24k gold plated
  • Priced per piece