Music Direct has sold thousands of RCA caps over the years. It’s a simple way to keep unwanted RFI and dust out of your components. Now IsoClean has improved the concept of the RCA cap. Just place these over any unused RCA inputs/outputs on all of your components and these caps will block out any RFI that can add noise to your system.
IsoClean RCA Caps are made from solid, high-quality copper and have a removable center pin (see note below) on the end to fully protect your system from airborne noise. These are the best caps currently available. Highly recommended!
NOTE: The IsoClean RCA Caps have a special Center Pin which helps prevent RFI/EMI contamination. If you are placing these RCA Caps on any OUTPUT RCA jacks – YOU MUST REMOVE THE CENTER PIN. You can use the pin on any INPUTS without any risk.