QED Reference Digital Audio 40 Interconnect Cable

Reference Digital Audio 40, the new standard for digital coaxial S/PDIF signals.

Reference Digital Audio 40 utilises a carefully engineered geometry to achieve the precise characteristic impedance required for the maximum transfer of S/PDIF signals. Silver plated conductors deliver a low resistance path for high frequencies and QED Digiloc2™ plugs more closely match the cable's characteristic impedance, reducing return loss by up to 1.5dB when compared to conventional RCA plugs. This ensures optimal signal transfer and improved micro-timing of the audio signal.

By implementing factory-controlled geometry and low permittivity foamed polyethylene dielectrics, Reference Digital Audio 40 maintains the correct characteristic impedance to match the transmission line between digital source and sink precisely. This makes for a very low jitter signal transfer which, listening tests have shown, leads to clearly audible sonic improvements.

Featuring high-purity copper signal and ground connections supported by a new non-conductive low eddy current body. The hollow central pin eliminates the skin effect at high frequencies and the revised locking barrel design clamps the dual blade ground connection firmly to the RCA sockets for improved noise rejection. The optimised geometry of the plugs and the dielectric materials selected have resulted in a closer impedance match for low jitter S/PDIF transmission, resulting in a measurable 1.5 dB reduction in insertion loss, compared to ordinary RCA plugs.

Features

• Silver plated signal carriers, effective high-quality shielding and impedance matched cordage.
• Triple layer electromagnetic shielding.
• 75 Ohm impedance-matched Digiloc2™ RCA plugs.

Specifications

• Silver-plated 99.999% OFC Oxygen Free Copper central conductor.
• Extruded Foamed Polyethylene (PE) dielectric, for sonic purity and low return loss.
• Double 99.999% OFC braid plus Al/Mylar wrap for 100% electromagnetic screening coverage.
• Twin leaf 24-Carat Gold plated QED Digiloc2™ RCA plugs featuring high-purity copper contacts, pin and low eddy current design.
• 75 Ohm coaxial design with closely matched locking plug for reduced return loss.
• Two year QED warranty.

More Information

• Reference Digital Audio 40, by QED