Our loudspeaker cables and interconnects are composed of copper of the best possible quality. We decided to use this material after experimentation with many other materials, as well as with other copper configurations. Copper delivers the most neutral, transparent, and natural musical signal. Jorma Design no. 1 and no. 2 cables employ 99.999999% pure copper. no. 3 cables employ 99.9999% pure copper. These numbers do not refer only to oxygen, but to ALL polluting materials and metals. All conductors are subjected to a spark test using 6000 V impulse tension before we use them to produce our cables. The dielectric of all Jorma Design cables is made of the purest, non coloured Teflon. The connectors we use are very carefully selected for the best sound quality. Where solder is used, it is also carefully selected for the same reason. The connectors for the no. 1 and no. 2 speaker cables are assembled with gold-plated copper crimps, with no solder employed. In all no. 1 series cables, we use Bybee Quantum Purifiers, which minimize distortion without adding any negative sonic effects. In addition to the use of the finest materials in all aspects of their design, the unique structure of Jorma Design cables contributes to their natural sound. The filling in the   conductors is a special ceramic glass fibre, with threads that is ultra thin. Inside the conductors are hundreds of these fibres, and around the fibres are thin copper threads wound exactly in parallel. The conductor therefore forms a tube that has a thickness of 0.1 mm. We found that this form gave the best-sounding results, but by itself, such a thin copper tube is not sufficiently stable for normal use. The solution was to employ the ceramic fibre filler to get as close as possible to the tube form. While it is very difficult to produce conductors in this way, the finished product is very hard to damage. In fact, Jorma Design cables are so strong that they can be used to lift a car! Jorma Design cables employ sophisticated shielding to reject radio frequency interference (RFI) and electromagnetic interference (EMI), and to stabilize the cables against vibration and micro phonics. The shielding for all Jorma Design cables (except no. 3 speaker cables) is heavily braided, tin-plated copper that works very effectively in combination with the special geometry of the conductors to ensure that up to 98% of the incoming and outgoing RFI and EMI are removed without any compromise to the audio signal. One question that is frequently asked about Jorma Design cables is: Why are they so thin? For that price, shouldn’t they be thick and heavy? The problem with taking diameter as an indicator of quality is that making Jorma   Photo by Timbre www.euphonia-audioforum.se Design cables thicker would adversely affect the sound. We have found that using the least amount of the insulation that surround the conductors results in the best sound. If we were to use more than is absolutely necessary to make the finished product strong, safe, and long lasting, it would degrade the sound. That is why our cables look as they do.