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QED Signature Audio 40 RCA Interconnects


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RRP: £179.00


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Warranty length Lifetime
Connectors RCA to RCA
Brand QED Cables
Product Award HiFi Choice 5 Star

Tech Specs

Silver Plated 99.999% Oxygen Free Copper (SPOFC) conductors with Teflon dielectric
Asymmetrical twisted pair geometry
SPOFC shield giving 100% electromagnetic screening
Zn/Mn ferrite Jacket
Rhodium plated QED ‘Analoc’ RCA plugs
Cryogenically Treated
Capacitance: 63pF/m
Inductance: 0.37uH/m
Loop resistance: 0.072 Ω/m
Dissipation Factor: 0.0011
QED Lifetime Guarantee

Product Description

QED Signature Audio 40 RCA interconnects are a new design concept from QED laboratories. The cordage is designed primarily for low capacitance as this has been identified by QED as a significant factor leading to a high fidelity experience and makes for a tight sound retaining the rhythm of the original piece.

Add our Complementary Conductor TechnologyTM for high frequency detail and our Analoc Technology to maximise signal integrity and the result is what we feel to be the most innovative interconnect ever made by QED. Please see our 'cables matter' section below for more in-depth information on this ground breaking design.

Complementary Conductor Technology

This innovation utilises two conductors of different diameters to carry the same audio signal. This has the effect of providing an alternative path for high frequency audio components which might otherwise become time smeared in a single audio pathway.

Teflon Dielectric

This material with its low dielectric constant has been used to cut down on the amount of audio signal energy lost due to cable capacitance.

Cryogenic Treatment

It is understood that cryogenic treatment results in the elimination of dislocations and fractures in the material’s micro-structure.

Trumpets and other brass instruments have been found to produce a better tone after Deep Cryogenic Treatment and it also extends their working life. Our extensive listening tests have shown that the cryogenically treated cable is preferred over the same cable without the treatment.

Analoc Locking RCA Plugs

The new QED Analoc plug is a low eddy current design featuring small high purity copper conductors in place of the usual large volume brass body found in ordinary high quality plugs.

This cuts down or eliminates the tendency for the changing magnetic field in the conductor to induce eddy currents which can affect the micro timing of the audio signal. Rhodium plating has the advantage for use as a plating material due to its superior hardness.

Press Reviews

  • 'Overall then, this new cable is an excellent performer at the price, right across the board.' (Hi-Fi Choice Magazine)

  • 'the new Signature is open and detailed like few others at the price, with a light, spry sort of sound that captures the energy of the music in its full glory.' (Hi-Fi Choice Magazine)

  • 'Here’s a genuinely impressive sounding audio interconnect' (Hi-Fi Choice Magazine)

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