Audioquest RCA (Cinch) Noise Stopper 1 Piece

AudioQuest RCA Noise-Stopper Caps – RF/EMI Shielding & Contact Protection for Unused RCA Connectors (Set of 10)

Effective suppression of high-frequency interference and long-term contact protection for analog audio systems and high-end components.

Open, unwired RCA inputs and outputs on amplifiers, preamplifiers, or DACs act like unintentional antennas within the device. In modern living environments, these open jacks pick up radio frequency interference (RFI) and electromagnetic interference (EMI) from the power grid, Wi-Fi routers, and mobile devices. This interference passes directly into the internal circuitry, degrading the signal-to-noise ratio and the resolution of the audio component.

AudioQuest RCA Noise-Stopper Caps effectively eliminate these weak points. Their complete metallic covering prevents the ingress of high-frequency interference signals directly at the contact point, ensuring undisturbed signal processing.

Technical concept and functionality

High-frequency and EMI shielding:

By placing the caps on unused RCA jacks, the component's housing shield connection is completed. Interference fields are effectively dissipated before they can penetrate the sensitive signal processing. The result is a noticeably quieter background sound and more precise detail in quiet passages.

Patented 23-spring contact system for universal fit:

Unlike simple plastic or loose-fitting covers, AudioQuest Noise Stoppers feature 23 internal precision springs . These generate consistent, mechanical pressure against the jack wall. They guarantee a permanently secure fit and optimal conductivity on all standard RCA inputs and outputs – regardless of manufacturing tolerances.

Protection against oxidation, dust and mechanical wear:

Unprotected contact surfaces oxidize due to humidity and environmental influences. The resulting corrosion layers permanently increase contact resistance. AudioQuest caps physically seal the jacks against dust and oxygen, thus preserving the contact quality for future rewiring.

Use in custom installation & studio areas

AudioQuest RCA Caps also offer added value in professional rack setups and complex home cinema installations: In addition to demonstrably reducing potential ground loops and interference, they give unused connections a clean, structured appearance and ensure the long-term reliability of the entire AV system.

Technical data

Product name: AudioQuest RCA Noise-Stopper Caps

Function: RF/RFI and EMI shielding as well as oxidation and dust protection for unused RCA jacks

Compatibility: Universally compatible with all standardized RCA inputs and outputs.

Mechanical fit: Integrated 23-spring system for optimal hold and contact pressure

Material: Solid, highly conductive metal housing with durable surface finish

Scope of delivery: 1 piece