QED Reference Subwoofer 40 RCA Subwoofer Interconnect 10.0m - NEW OLD STOCK
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QED Reference Subwoofer 40 RCA Subwoofer Interconnect 10.0m - NEW OLD STOCK

£100.00 Exc. VAT |  |

QED Reference Subwoofer 40 RCA Subwoofer Interconnect 10.0m - NEW OLD STOCK - RRP £184.95

Over 40 years of award winning expertise

QED has won more What Hi-fi Awards than any other single brand. With the Reference cable range this heritage is delivered directly and without compromise. All QED cables are designed using the top down principle with Reference Subwoofer 40 representing the pinnacle of musical performance. 








Complementary Conductor Technology™ 

Improves timing and detail, retaining the rhythm of the original piece – vital when it comes to the “bottom end”. Unlike conventional analogue interconnects, Reference Audio 40 uses two silver plated 99.999% Oxygen Free Copper conductors of different diameters to carry the same audio signal. This has the effect of providing an alternative signal path for more subtle audio components which might otherwise become time smeared in a single audio pathway. Reference Sub Woofer 40 is further optimised by having a 25% smaller diameter than Reference Audio 40 making it more convenient for those long runs around the room.

Floating internal Ferrite jacket 

Absorbs high frequency noise signal components outside the audio band. When measured using high frequency measurement equipment, Audio 40 products convey a comparably cleaner and tighter signal pattern when its special Zn/Mn ferrite jacket is present. This has a beneficial effect on audio signal micro-timing and may account for the clear preference expressed for the ferrite jacket in listening tests. 

Analoc™ RCA locking plugs 

This all new locking design features small high purity gold plated 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 are thought to affect the micro-timing of the audio signal. Coupled with its hollow central pin, which is designed to combat the skin effect in the same way as our X-TubTM speaker cables, the new QED Analoc plug maintains the fidelity of the audio signal from start to finish. 

Just listen

Silver plated signal carriers, effective high quality shielding and low eddy current plugs all combine to create audible sonic improvements. We urge you to compare it not only to your favourite cable but also alternative brands and models at any price! 


  • QED ‘Complementary Conductor TechnologyTM’ -Two Silver Plated 99.999% Oxygen Free Copper (SPOFC) conductors with offset diameters to eliminate cable timing errors
  • Zn/Mn ferrite jacket to absorb high frequency noise signals and further eliminate timing errors
  • Foamed Polyethylene (PE) dielectric- for sonic purity
  • 99.999% Oxygen Free Copper braid for 100% electromagnetic screening coverage in a coaxial geometry
  • Twin leaf 24c Gold plated QED ‘AnalocTM’RCA plugs featuring high purity copper contacts, hollow centre pin and low eddy current design • QED Lifetime Guarantee 

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