The air helix design of the Referenz USB-2405 AIR is entirely unique. We’ve developed a special clip to achieve practically perfect air insulation. Inside the cable, in the right numbers these clips form a supporting structure that keeps the helically-arranged signal conductors apart in the air, and guides them through the high-density shielding at a specific distance from each other. The flexibility of this structure is ensured with two struts, which both hold the clips together and fix them at an exact distance from each other.

In the proper sense of the word, “digital” only exists in mathematics in the form of the binary number system. There are no purely digital signals in the technical world. Electrical voltage limits and time windows are defined to detect zeros and ones. The jump from a zero to a one or vice versa always requires a certain time, during which the signal level passes through all intermediate values, from 0 volts to 5 volts, for example. Capacitive loads, dielectric losses, noise and electromagnetic interferences caused by cables additionally manipulate this change. This results in temporal shifts, or the, “jitter effect”, which makes precise reconstruction of the audio signal difficult or almost impossible.

New 180° USB connector: As we know, USB connectors can only be inserted in one direction. This can be difficult, as the position of the USB sockets in devices varies. To adjust the course of the cable, it often has to be twisted quite a lot, which puts strain on cables, connectors and sockets and also looks unsightly. Our recently developed USB connectors with 180° rotation mechanism offer a solution: Each one can be rotated by +/- 45 degrees, enabling a total rotation of +/- 90 degrees from connector to connector, thus providing the finishing touch for perfect cabling.

The dense shielding of the Referenz USB-2405 AIR cable protects the sensitive signal from electromagnetic interferences. Under the shielding is the innovative air helix structure, where air and the spacing between the conductors act as insulators, preventing dielectric losses and significantly reducing capacitive loads. On the whole this makes the digital-to-analog converter’s (DAC) work easier and perfects the audio signal’s reconstruction.