Better home audio, Tip #6: Use your receiver's direct mode
Tip #6: Use your receiver or disc player's "Pure" mode for better sound.
Sending music signals through unnecessary circuitry can add unwanted noise and distortion to your favorite recordings. That's why some receivers and disc players offer a "Pure" or "Direct" mode for playing music. These modes give you the option of switching off unused or unneeded portions of your component's circuitry to provide the cleanest possible signal path, and minimize potential electronic interference. If any of your components provide these types of options, give them a try. You might find that the resulting sound is clearer and more detailed.
This post is based on the article "15 Tips for Better Sound from your Home System" by the Crutchfield Writing Team.