QED Reference Digital Audio 40

QED Reference Digital Audio 40

Free UK Delivery


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QED's Reference series is the penultimate range of interconnects in their extensive catalogue. Featuring an entirely new design concept, the cordage of the Reference models are designed first and foremost for low capacitance. This is because QED have identified this factor as being a significant player in the high fidelity listening experience, by retaining a low capacitance, sound signals are better looked after and allow for a more collected and detailed hifi performance.

The Reference range also utilises QED's 'Complementary Conductor Technology' to ensure a high frequency detail, and their Analoc Technology to optimise signal integrity. All QED interconnects and cables feature a lifetime warranty, including the Reference series.

The QED Reference Audio 40 makes use of the company's delicately and meticulously engineered geometry, allowing the cable to achieve the truly precise characteristic impedance necessary for a the best possible signal transfer of S/PDIF signals. The conductors feature a silver plating, enabling for a low-resistance path delivery for high frequencies while the QED Digiloc plugs ensure a secure and superior connection. 



Conductor Central
Silver Plated 99.999%
Oxygen Free Copper
 Dialectric Extruded foamed
Polyethylene (PE)
 Screening Coverage Double 99.999% OFC braid plus Al/Mylar
wrap for 100% electromagnetic
 RCA Plugs Twin leaf 24c Gold plated
QED ‘Digiloc™’ RCA
 Design 75 ohm coaxial 

Providing your item is in stock, the order is usually dispatched within 24 hours. Postage and packing is completely free for orders over £100*. Out of stock items will be dispatched as soon as they become available, out of stock items can take between 4 to 21 days for dispatch.


Orders are sent via our couriers' DPD on a next-day-delivery service and usually, take between 1 and 3 days. 


Please use this link to find more detailed delivery information.


*We ship free of charge to mainland UK addresses, excluding the Scottish Highlands or 'Out-Of-Reach' Scottish locations. Please consult the post-codes below to see if your location falls within this category. If you are still unsure, please contact us on 01432 354921. We also ship to Northern Ireland, Channel Islands, Scilly Isles, Scottish Isles and Scottish Highlands, however, delivery to these locations will incur a charge and can only be sent via a 2-day service.

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