Power cables
A good power cable in a Hi-Fi context plays an essential role in ensuring optimal power supply to the audio components and can in some cases contribute to improved sound quality. Although the power supply itself does not directly affect the audio signal, quality differences in power cables can have indirect effects, especially in high-end Hi-Fi systems.
The effect of a Hi-Fi power cable depends on your system and the environment. In some setups the difference can be subtle, while in others it can be noticeable. For many audiophiles it is part of a total approach to optimizing each element in the chain to achieve the best possible sound.