QED Airloc ABS 4mm Banana Plug
The Ultimate Cold-Weld Connection for Pure Audiophile Signal Integrity.
Designed to create an airtight, solderless bond with your speaker conductors, QED Airloc ABS 4mm Banana Plugs utilise high-pressure cold-weld termination technology to eliminate signal resistance and copper oxidation. Featuring 24k gold-plated Forté spring-pins and slim non-magnetic ABS housings, they deliver maximum dynamic range, razor-sharp soundstage detail, and long-term acoustic stability.
Please note that these plugs require a specialist crimping tool. AV installs provides a free termination service when you purchase any speaker cable.
Sold in pairs: x1 Red and x1 Black
£7.00per pair
- Description
- What is Airloc
- Termination Services
- Q & A
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Description
High-Pressure Cold-Weld Precision for Lossless Audio Transmission
Standard screw-terminal plugs and solder joints introduce microscopic gaps, oxidation barriers, and impurity points that degrade audio signal fidelity over time. QED Airloc™ technology solves this by permanently compressing copper strands into a unified solid brass core under high pressure, forming an airtight cold weld that preserves full frequency response and transient speed.
Encased in a slim, colour-coded ABS body to prevent capacitive coupling and short-circuiting in dense AV receiver racks, the Airloc ABS banana plug is the definitive reference termination for audiophiles and high-end home cinema installations.
Key Performance Benefits
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Airloc™ High-Pressure Cold-Weld Technology: Fuses cable conductors and plug body into a single solid-metal junction, eliminating contact resistance and air gaps where oxidation forms.
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24k Gold-Plated Forté Spring-Pin: Utilises QED’s specialised spring-loaded pin profile to maximise surface contact area with 4mm binding posts, ensuring optimal current delivery and tight mechanical retention.
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Solderless Pure Copper Path: Avoids the high resistance and sonic colouration introduced by traditional tin/lead solder joints, maintaining reference-level clarity across all frequencies.
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Slender ABS Shell (Anti-Short & Non-Magnetic): Non-conductive ABS barrel eliminates eddy currents and prevents touching terminals in tightly spaced multi-channel power amplifier back panels.
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Universal Conductor Compatibility: Accommodates high-purity copper speaker cables with conductor cross-sections up to 5.5mm² (including QED XT40i, Signature, and heavy-gauge OFC cables).
Technical Specifications
| Parameter | Specification |
| Termination Method | Airloc™ Cold-Weld High-Pressure Crimp |
| Plug Pin Diameter | Standard 4mm Spring-Tensioned Expansion Pin |
| Plating | 24k Gold Plated |
| Body Shell Material | High-Grade Non-Magnetic ABS Polycarbonate |
| Color Coding | Red and Black Polarity Sleeves |
| Conductor Size Compatibility | 1.5mm² to 5.5mm² (16 AWG to 10 AWG) |
| Overall Diameter | 11 mm |
The Science Behind QED Airloc™
Why Cold-Welding Outperforms Soldering & Screws
When viewed under a microscope, standard bare-wire or screw-clamp connections touch at only a fraction of their total surface area, creating high electrical resistance and inviting corrosion. Under Airloc™ pressure, copper strands deform into a single dense mass, creating a 100% air-tight seal with zero resistance rise—ensuring your system maintains its full amplifier damping factor for life.
WHAT IS AIRLOC™?
The Engineering Behind Permanent, Zero-Loss Signal Termination
Choosing a QED speaker cable means investing in uncompromised conductivity, driven by our ultra-pure 99.999% Oxygen-Free Copper (OFC) conductors and industry-leading low D.C. resistance. However, an audio signal chain is only as strong as its weakest link—and the physical point where bare copper meets an amplifier or speaker terminal is where signal degradation most often begins.
The Hidden Bottleneck in Standard Connections
Under a microscope, even finely drawn copper strands reveal jagged, uneven surfaces. When clamped into traditional screw-type binding posts or budget banana plugs:
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Minimal Surface Contact: Physical metal-to-metal transfer occurs at only a fraction of the strand’s surface area, bottlenecking current flow.
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Rapid Oxidation: Bare copper exposed to oxygen forms a microscopic tarnish layer within days. This oxide barrier dramatically increases contact resistance, eroding the performance advantages of high-purity cable.
Over time, this elevated resistance dulls dynamic response, restricts high-frequency detail, and limits your system’s overall damping factor.
The Cold-Weld Advantage: Molecular Fusion Without Heat
QED Airloc™ eliminates these mechanical flaws through a high-pressure cold-weld termination system. Using specialised radial crimping dies, Airloc™ compresses the cable’s conductor bundle and the plug body under immense hydraulic force.
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Maximum Contact Surface: Copper strands deform plastically, merging into a single, dense metal mass with zero internal voids or air pockets.
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Hermetic Oxygen Seal: Purging all trapped air from the junction permanently seals contact surfaces against atmospheric corrosion.
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Lifespan Resistance Stability: As pressure reaches its optimal peak during the cold-weld cycle, electrical resistance drops to an absolute minimum—and stays there for the lifetime of your system.
One Solid Conductor
The result is a seamless metallurgical bond between cable and connector—delivering raw dynamic impact, pristine soundstage transparency, and long-term signal fidelity.
Custom Fitted by Certified Technicians
Made to Order with Factory Precision
All QED Airloc™ cables are custom-cut to your requested length and hand-terminated in-house by our certified AV technicians. Using QED’s specialized AT1 bench-top cold-weld tooling, we ensure an air-tight, zero-loss connection built to perform for a lifetime.
Standard Processing: Custom cable orders typically dispatch within 1–2 business days.
Custom Lengths: Need a tailored length or specific configuration? Contact our team at info@avinstalls.co.uk or call 0800 669 6600.
Q & A
QED Airloc ABS 4mm Banana Plug
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