The DC Block 6 is designed to improve the quality of the alternating current power that feeds audio and AV systems.

The electric current has a fundamental effect on the audio signal as it passes through a system, from the source to the amplifiers to the speakers.

The power supply in a typical home is subject to interference caused by a range of issues, leading to the distortion of the AC waveform before it reaches each component.

This creates noise in the audio signal, which degrades sound quality – a situation that continues to worsen with the addition of more and more electrical devices to the home's power grid.