High quality of built-in and external power sources, which are a part of an audio system (AMP, Pre-Amp, etc.), are critical requirements for attaining the reproducibility of musical sound signals of high quality.

Similar requirements apply to the quality of a power cord – one of the most important components of a power source. Power cords intended for applications in audio and video digital equipment (CD, DVD, etc.) differ considerably from those used in analog systems.

Fundamentally different physical principles of transmitting electrical sound signals in digital and analog systems define, in turn, substantial differences in their spectral ranges (up to 30 kHz for an analog system and 2.8 MHz (44.1 Mbit) - 100 times greater range for a digital one).  The difference in the spectral range of transmitted signals results in their different susceptibility to the effect of broadband detrimental interferences.  The latter, to one extent or another, influence both digital and analog sound reproductions.  Unlike analog, digital systems are most sensitive to impulse and high-frequency (RF)interferences at frequencies of approximately 3 MHz and are less sensitive to analog low-frequency (HF) interferences. 

These HF interferences in power supplies used in digital systems may be the reason for phase noise and errors that dramatically reduce sound quality.  Our specially designed xMatrix Pure Silver Digital Power Cord is equipped with an internal system for filtering out high-frequency interferences, as well as two-stage external RF EMI filters removing detrimental signals immediately at the power-source input of a digital system. 

To further improve the suppression of HF interferences, the ground cable is made of  pure silver wires (total 13 AWG). This configuration of the ground wire has low total electrical resistance for high-frequency interferences and permits their blockage at the output of the power cable, thus, preventing their further transmission into the sound-reproducing system.