afis – artistic fidelity isolator switch

Digital reference monitoring matrix | Galvanic isolation – Filter – Reclocking


The influence of interference voltage from digital electronics, computers and IT peripheral devices on the quality of music playback is usually massively underestimated. Because in addition to the direct influence on the analog signal which is generally possible, it should be especially noted that every form of interference in complex mechanisms via Jitter (clock instabilities) has an effect on the audio signal. So the issue of "avoidance of interference" is of central importance for the ideal, faithful playback of music.

Therefore, the first device of the arfi series, the afis, was conceived as a central switching unit to conduct signals of various digital formats from various sources as faithfully as possible to the DA converter. In addition to galvanic isolation, filtering and reclocking (regeneration of a new precise pulse synchronous to the incoming pulse), the device has a switching unit for four different input signals. The device can thus integrate various digital sources (CD players, audio interfaces, etc.) and the DA converter into the digital transmission route. The afis suppresses interference from any source and creates precise, clean pulses for the outgoing signal to the DA converter.

This last idea is not quite new, however the afis has a brand new approach: this type of interim switching device can only have an effect on the sound of the DA converter that follows. A super-precision oscillator in the reclocker is thus totally useless on its own. Only the actual effective clock precision in the DA converter is crucial. For this purpose, the issues of interference suppression, EMC and cable technology are far more important than the actual oscillator precision. For example, the XLR and cinch connectors became standard around 40 years ago because they were common in analog technology. However, they are only suited to digital signals to a very limited extent because the impedances do not really match and the wrong impedance can produce signal reflections on digital cables, thus producing inadequate signal quality. Faithful transmission is not possible without solving this problem. Therefore, reclocking is only one of the many features of afis. Blocking interfering signals and cable technology are far more crucial to actually transmit the precision thus generated to the DA converter. This increases the quality of the digital-analog conversion in the connected DA converter.

In professional use, you have a true assessment of the work, because external influencing factors are minimized. The sound contains more fundamental and is tonally more balanced. There are gains in precision and spatial resolution. The main thing is fine musical details that were previously masked will now be audible. For the music lover, a fully new listening experience where the artistic expression of the interpreters can be relived in an unheard intensity...or simply and tangibly more pleasure listening!

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