Audio 40 product image  Audio 40 sub product image

SIGNATURE
Audio 40

£199.96
NO STOCK
0.6m
1m
3m
OVERVIEW

Signature Audio 40

The groundbreaking Signature Audio 40 analogue audio interconnect celebrates QED's 40 years at the forefront of British designed audio cables

Signature Audio 40 is an entirely 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 Technology™ for high frequency detail and our Analoc2™ 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 groundbreaking design.

AWARDS AND REVIEWS

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FEATURES

FEATURES AND BENEFITS

Complementary Conductor TechnologyTM

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 (below -190 °C, -310 °F) 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.

All-new Analoc2™ connector design

The Analoc2™ design still features low bulk, high purity copper connectors alongside low mass metal barrels, but now cleverly substitutes high rigidity thermoplastic material for both the inner support structure and the cable strain relief to eliminate the detrimental effects of eddy currents. Although already smaller than in traditional bulk brass plugs, these unfavourable currents were still able to circulate weakly in the isolated metal body of the previous plug design. Now with the new material in place, these remnant resonant distortions are completely prevented from adversely affecting the information contained in the audio signal as it travels through the new plug.

To complete the RCA plug’s Analoc2™ upgrade and to help combat the skin effect, the hollow, rhodium-plated, high-purity copper signal-pins are retained, while the effectiveness of the slip ring which locks in place the similarly plated, pure copper ground-terminal as the barrels are tightened, has also been improved.

SPECIFICATIONS

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 Analoc2™ RCA plugs
Cryogenically Treated

Capacitance: 63 pF/m

Inductance: 0.37 μH/m

Loop resistance: 0.072 Ω/m

Dissipation Factor: 0.0011

QED Lifetime Guarantee

PERFORMANCE

OVERALL PERFORMANCE

Analoc

Analoc2™ Technology

QED Analoc2™ RCA plugs feature 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 all new Analoc2™ design cleverly substitutes high rigidity thermoplastic material for both the inner support structure and the cable strain relief to eliminate the distorting effects of eddy currents, which are always present in ordinary plugs where bulk brass is used instead

CCT

Complementary Conductor Technology

Complementary conductor geometry 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.

USE IT FOR..

WHAT THIS CABLE IS USED FOR

CONNECT YOUR:

DVD player
CD Player
DAC
Turntable
Tuner

TO YOUR:

Receiver
AV Amplifier
REVIEWS

Customer Reviews

best cable in this price class
I used many different cables from other manufacturers with prices almost five times of this cable but only one of those cables had close the same sound characteristics and that cable was the most expensive one. I fitted my whole system from sources to power amp with the Signature Audio 40 and I enjoy every second of listening to the sound. A friend of mine convinced me to try his American made cable, which is also an old cable manufacturer in the states with over 35 years of experience in cable making. After having his cable burned in I gave it a good time of listening with different kinds of music and I have to admit the Signature Audio 40 still sounds better in terms of spacier, more natural and higher dynamics.
Review By: sonicaudiophile

You're reviewing: Signature Audio 40

SKUS: QE2445, QE2448, QE2440
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"This kind of transparency is difficult for rivals to match"
"Near total transparency that is the mark of an award-winner."
"Natural, organic way of making music that’s wonderfully smooth"
"Cannot be faulted for build, technical parameters, sound or value"
"Very low power loss, across the audioband it’s the perfect solution for high-end systems"
"Outstanding, among the best"