It is hard to believe that an Earth/Grounding cable could have such a huge impact on sound quality, but it does !

The way the cables used to drain away the noise / stay currents are designed has an signify effect on the result. We believe this is due to there being such a high frequency and low voltage in the current with which we deal.

Spontaneously, you feel that the design of a cable not used to convey signals, but rather to connect to the earth, should not have any effect on the sound.
However, the choice of materials and the design of the earth cable produces completely different results. Again, we can only find the explanation in that it is a matter of very high frequencies, or else there should not be so big difference between connectors, regular copper cable and mirror-twisted silver cable
Actually, it is merely the design of the contacts and the dialectrum that join a good earth cable with a good signal cable. Otherwise, they have hardly anything else in common.

We began to market Eartha Cupper in 2010, and since then we have expanded the assortment with another 5 lines, where Eartha Atlantis is our top cable.

Eartha Cupper. Produces a warm effect.

Eartha Konstantin. Produces a warm and little more detailed effect

Eartha Challenger. A hybrid Copper/Silver that is rather neutral and with good details.

Eartha Silver Produces a very detailed effect, especially at high frequencies

Eartha Apollo Neutral, but very open and detailed.

Eartha Atlantis Very detailed, neutral.