Explore QED audio cables and accessories for outstanding sound quality. From HDMI to speaker cables, find options tailored for your Hi-Fi or home theater system.
QED ReferenceDigital Audio 40 Cable - 60cm
QED ReferenceDigital Audio 40 Cable - 1.0 metre
QED ReferenceDigital Audio 40 Cable - 3.0 metres

- Free shipping on orders over € 100,- (NL)
- Returns possible within 14 days
- Pickup available (Vries, Drenthe)
The QED Reference Digital Audio 40 sets a new standard for digital coaxial S/PDIF interconnects. Its innovative design integrates silver-plated conductors, triple-layer electromagnetic shielding, and QED Digiloc2™ RCA plugs for superior audio precision and reduced signal distortion.
Key Features
- Silver-plated signal carriers for superior high-frequency transmission
- Triple-layer electromagnetic shielding for noise rejection
- 75 Ohm impedance-matched Digiloc2™ RCA plugs with low eddy current design
- Ultra-low jitter signal transfer for accurate audio reproduction
- Factory-controlled geometry and extruded foamed polyethylene dielectrics for low return loss
Detailed Description
Precision Engineered Geometry
The Reference Digital Audio 40 cable utilizes a carefully engineered coaxial design to achieve precise 75 Ohm impedance. This ensures maximum S/PDIF signal transfer, resulting in improved audio clarity and timing accuracy.
Superior Conductors
Silver-plated 99.999% oxygen-free copper conductors deliver a low resistance path for high frequencies, preserving the integrity of the original digital signal for enhanced audio quality.
High-Quality Shielding
A triple-layer electromagnetic shield, composed of dual layers of 99.999% OFC braid and aluminum mylar wrap, ensures 100% coverage against interference from nearby noise sources.
Digiloc2™ RCA Plugs
The innovative Digiloc2™ RCA plugs feature high-purity copper connections with a hollow central pin to minimize high-frequency skin effects. The low eddy current thermoplastic body and revised locking barrel design reduce distortion and enhance noise rejection. This design achieves a 1.5 dB reduction in insertion loss compared to conventional RCA plugs.
Low Jitter Performance
Het ultralage jitterontwerp, met een waarde van 30 ps, zorgt voor een precieze timing van audiosignalen en verbetert de geluidskwaliteit door afwijkingen van de referentieklokbron te minimaliseren.
Technical Specifications
Conductors | Silver Plated 99.999% Oxygen Free Copper |
Design | 75 Ohm coaxial with closely matched locking plug |
Plugs | Twin leaf 24k Gold plated QED Digiloc2™ RCA |
Shielding | Double 99.999% OFC braid plus Al/Mylar wrap |
Dielectric | Extruded foamed Polyethylene (PE) |
Jitter | Typically 30ps |
Warranty | Two years |
- Free shipping on orders over € 100,- (NL)
- Returns possible within 14 days
- Pickup available (Vries, Drenthe)