The AudioQuest XLR Noise Stopper Caps are available for the XLR INPUT or XLR OUTPUT. Please select INPUT or OUTPUT on the listing before checking out.
In a world immersed in RF/EMI interference we all need the sound of silence...Nothing makes an audio/video system more irritable than RF interference entering/exiting your system. To reduce the amount of RF interference we recommend "capping" all unused RCA, USB, HDMI and XLR inputs/outputs. You'll be pleasantly rewarded with a blacker background, deeper sound stage, and a richer more satisfying overall experience.