Here is a quote I found from What’s Best Forum, I thought it would help explain.
"Signal noise kills transients and detail. The more noise you have in your ground signal, the less of the finer areas of your music will be heard. Of course, some people have more noise than others so its difference in degree is, of course, obvious but it’s not until you remove the noise that you understand its negative and damaging effects.
The Entreq grounding boxes work with signal ground noise. Although noise from other bits of kit can be only very slight, that doesn’t mean it’s not having a negative effect on the performance of your entire system. The Entreq range of grounding boxes fixes this as they drain off the noise in the signal path, thus opening up the sound.
- Improved clarity and harmonics.
- Improved focus and texture.
- Improved air and transient details.
- Improved sound floor.
- Improved smoothness and fluidity."
ozzy