Noise-dampening XLR output caps • blocks RF/EMI distortion • solid metal shielding construct • protects open balanced outputs from corrosion & dust • pack of 2 caps
The AudioQuest XLR Output Noise-Stopper (Set of 2) provides an essential, non-invasive upgrade for high-end audio components by shielding open XLR output jacks from airborne radio frequency (RF) and electromagnetic interference (EMI). Crafted from solid metal alloys to act as a barrier against stray airborne energy, these precision-engineered caps prevent high-frequency noise from entering active audio circuitry, preserving lower noise floors, inner detail, and dynamic clarity across preamplifiers, DACs, and receivers.
Key Features & Innovations
Blocks Radio Frequency (RF) & Electromagnetic (EMI) Interference — the AudioQuest XLR Output Noise-Stopper (Set of 2) prevents open, unshielded female XLR jacks from acting as antennas for atmospheric digital noise.
Solid Metal Alloy Shielding Construction — heavy-duty metallic construction creates a grounded Faraday shield over open output jacks, dampening background hash and digital ringing.
Protects Internal Circuitry & Contact Pins — physically seals unused XLR output ports against airborne dust, oxidation, humidity, and contact point degradation.
Universal XLR Output Compatibility — designed to fit male pin assemblies of female XLR output sockets on preamplifiers, digital-to-analog converters (DACs), surround processors, and AV receivers.
Zero Signal Loss or Modification — purely passive protective caps that enhance sonic performance without placing passive loads or components into the active signal path.
FAQ — XLR Output Noise-Stopper
What is the difference between XLR Input caps and XLR Output caps?
The AudioQuest XLR Output Noise-Stopper (Set of 2) caps are specifically designed to fit over male pin XLR output jacks (female sockets). Output caps are non-shorting to ensure safe operation with active driver circuits, whereas input caps are often shorted to tie signal pins to ground.
Why do unused XLR jacks need to be covered?
Unused, exposed metal connectors act as small antennas that gather RF and EMI noise from Wi-Fi routers, cellular signals, and household electronics. Covering them prevents this stray high-frequency energy from entering your component's ground plane and dirtying the soundstage.
Will using these caps void my equipment warranty?
No. AudioQuest Noise-Stopper caps are passive protective accessories that simply slide onto external jacks without modifying or electrically loading internal component circuitry.
How many caps are included in a single package?
Each box contains a set of two (2) AudioQuest XLR Output Noise-Stopper caps, ideal for shielding a left and right stereo pair of outputs.
Why Buy From Us
Authorized AudioQuest dealer offering 100% factory-authentic system accessories with full manufacturer support
Expert audiophile consultants available to assist with noise-floor optimization, cable geometry, and system setup
Dedicated post-purchase technical support for high-end audio component tuning
Fast, secure shipping with protective packaging on every order
