Why Cardas: Cardas’ cable design incorporates, Golden Ratio, Constant Q, Cross-Field, pure copper Litz, conductor technology. Why should I use it? What will it do for my system?

It is said, wire is just wire.

In reality, a high-end audio cable must balance resistance, capacitance, inductance, conductance, velocity of propagation, RF radiation and absorption, mechanical resonance, strand interaction, high filtering, reflections, electrical resonance, dissipation factors, envelope delay, phase distortion, harmonic distortion, , structural return loss, corrosion, cross-talk, bridge-tap and the interaction of these and a hundred other things. As a high-end cable manufacturer, Cardas Audio strives to address every detail of cable and conductor construction, no matter how small.

Every detail in Cardas cables is at the leading edge. Pure PFA is used as a stabilizing wrap to firmly bind the conductors, while thin wall tubes provide an air dielectric to isolate the conductors from each other. Cardas defines the state of the art with a perfect joining of conductor to connector. All connectors are custom machined with rhodium over silver contact surfaces. Finally, to insure the quality of each cable, they are terminated by hand and individually inspected.

It is this meticulous attention to details in design, care and construction that defines Cardas. 


Weltklasse! Stellt sich jeder Herausforderung !

Handmanufaktur, Kupfer versilbert, teflon isoliert, mit Spezialstecker.

Hergestellt in reiner Handarbeit !    Made in Germany.


In 1973 Bob Abraham and Ian Vine founded QED Audio Products and changed the way people think about hi-fi cables. By the time QED 79 strand was launched in 1978, it wasn’t considered just another speaker cable but a serious hi-fi component.

During 1994 we conducted the most extensive ever scientific investigation into the effects of speaker cable on hi-fi system performance. Read the results in "The Genesis Report". Hear them whenever you listen to your favourite music using QED hi-fi cables.

Our reputation for innovation and technical excellence is known throughout the world. The latest computer-aided design techniques allow our research and development team to keep pace with technological advances and deliver products that achieve the highest levels of performance and reliability. This is why QED speaker cables and interconnects are recommended by so many of the world’s leading manufacturers of hi-fi and home theatre equipment.

The current range of QED cable products is featured within the pages of this site, but we highly recommend a visit to your local specialist QED approved store to experience our cables for yourself. It could just be the best upgrade you make to your home entertainment system.


The Straight Approach

Music has the ability to stir the soul. It can inspire your greatest creativity, calm your spirit and energize your body. The power of music is most potent when the artists' composition is delivered free of processing and alteration.

The philosophy of delivering all the music and a clear picture has been the foundation of Straight Wire for over 15 years. The straight approach attaches no filters and provides the truest sound and vision that creators intended for your relaxation & escape.

Link your system together with Straight Wire and uncover musical nuances & visual subtleties you've missed. You'll get more entertainment from all your existing components and discover all the pleasures from your new ones. Enjoy!

"When System Performance Comes Down to the Wire"


Jenving has been producing high quality cables for over 30 years. In competition with mostly more expensive products SUPRA has won an impressive number of awards around the world. The Hi-Fi press often speaks about SUPRA products in terms of value-for-money High End products.

The company philosophy is to make “no nonsense design” products with the highest possible quality in cables, connectors and material. In combination with creative and patented inventions SUPRA is always a step ahead. Before our first product, SUPRA Classic 2.5 Speaker Cable (over 30 years ago), there were no speaker cables, but just cables. Our latest products “SWORD” speaker- and interconnect cable surprise Hi-Fi friends all over the world with their performance. If you are looking for super designed, mysterious cables, well... we don’t have them! But if you are looking for real Hi-Fi, High End cables, then SUPRA is definitely your choice.

Van den Hul : Company's Profile

Our high quality product range covers moving coil (MC) phono cartridges as well as a broad range of audio cable and wire products serving consumer, professional and industrial applications.

Our phrase “The Link between Technique and Emotion” attempts to illustrate our product designs main aim to support the enjoyment of the emotional qualities of music.

Other important criteria with the design of our products are: the durability of our products, an optimal protection against environmental influences and the application of environmentally friendly raw materials in all aspects.

A.J. van den Hul B.V. based in the Netherlands (Europe) is a company that since its founding in 1980 has made it its objective to improve the qualitative aspects of phono transduction and musical signal transfer in the most broad sense by applying unique solutions and state-of-the-art technology according to cartridge and cable designer A.J. van den Hul’s profound experience and philosophies.