QED Reference XLR 40 Analogue


QED Reference XLR 40 Analogue Interconnect Cable celebrates QED’s 40 years at the forefront of British designed audio cables.

QED Lifetime Guarantee



QED Reference XLR 40 Analogue

QED Reference XLR 40 Analogue is an innovative XLR balanced interconnect cable with legendary build quality and reliability. Designed primarily for low capacitance, a major factor in achieving a high fidelity experience, Reference XLR 40 builds on the multi-award winning Audio 40 range of QED products.

A special floating Zn/Mn ferrite jacket together with QEDs unique ‘Tri-Conductor’ technology reduce signal to ground capacitance to vanishingly low levels, thus eliminating minute timing errors in the cable.

Professional Standard Neutrik plugs

Reference XLRNeutrik XX-14 Nickel Series XLR gold-plated connectors are fitted as standard with Reference XLR 40 cables. These connectors are rugged and reliable and are particularly suited to QED’s ‘Tri-Conductor’ geometry due to the additional ground spring contacts which make for better shell ground continuity for the unique electrostatic screen which is only connected at the source end of the cable.


Just Listen

Silver plated conductors, LDPE dielectrics and legendary build quality combine to create audible sonic improvements.

Floating 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.

Unique Tri-conductor Technology

QEDs unique Tri-Conductor technology reduces signal to ground capacitance to vanishingly low levels affording the cable improved common mode rejection of mains hum pickup over ordinary “hot cold and screen” cables. This geometry is particularly effective in pro hi-fi audio applications when connecting pre and power amps using balanced cables.

Tri-Conductor Technology

Tri-Conductor Technology

QED’s unique Tri-Conductor technology uses a third silver-plated 99.999% OFC conductor which is integrally twisted alongside the similarly constructed signal pair to carry the ground return currents.

Ferrite Insulation Technology

Ferrite Insulation Technology

A special floating Zn/Mn Ferrite jacket is used within the Audio 40 cordage to absorb very high frequency noise components outside of the audible band that have an adverse effect on the micro-timing of the audio signal.


  • 99.999% Silver Plated Oxygen Free Copper 24 AWG Tri-Conductors with foamed PE dielectric
  • QED Tri-Conductors provide a level of common mode rejection not found in ordinary “hot cold and screen” cables
  • Unique floating Zn/Mn impregnated ferrite jacket
  • 99.999% OFC outer shield braid for 100% electrostatic screening
  • High performance gold plated Neutrik XLR connectors with low contact resistance and high signal integrity
  • Conductor Section 0.25 mm2
  • Parallel Capacitance 35 pF
  • Self Inductance 0.8 μH
  • Loop resistance 0.130 Ω/m
  • Dissipation Factor@10kHz 0.0001
  • Nominal Outside Diameter 8 mm
  • QED Lifetime Guarantee

The cable on offer is a brand new LATEST VERSION GENUINE QED Reference XLR 40 interconnect cable supplied by an authorised QED retailer.

QED dealer

Additional information

Weight 750 g