QED Reference Audio 40


The Audio 40 range represents an entirely new cable concept from QED laboratories. 

The cordage is designed primarily for low capacitance as this has been identified by QED as a major factor which leads to a high fidelity experience. This makes for a tight sound retaining the rhythm of the original piece.  Further steps have been taken to eliminate minute timing errors in the cable by the use of offset conductor diameters and a special floating Zn/Mn ferrite jacket.

The all new QED ‘Analoc™’ locking plug with its hollow oxygen free copper central pin, is designed to combat the 'skin effect' in the same way as our X-Tube™ speaker cables.  This helps maintain the fidelity of the audio signal from start to finish.


  • Silver Plated 99.999% Oxygen Free Copper (OFC) conductors with foamed PEndielectric - for sonic purity
  • Asymmetrical twisted pair geometry featuring independent dual layernscreening that protects delicate signals against interference from externalnhigh voltages and currents
  • Twin leaf Gold plated QED ‘Analoc ™’ RCA plugs featuring high purityncopper contacts, hollow centre pin and low eddy current design
  • Locking RCA plug design
  • QED Lifetime Guarantee