The tin-plated DOMINANT PRO E-string with a core of carbon steel is tin-plated. A protective layer of nickel is placed between the outer coating of tin and the steel core in order to increase the corrosion resistance compared with conventional tin-plated strings.

The string has a very good response, barely whistles, and is well-balanced in its brilliance and warmth. It supports the equilibrium with the A-string and promotes its capacity to carry sound. A specially developed wire treatment makes the sound soft enough that it does not have a screeching effect, and brilliant enough that it offers sufficient radiance, projection and resistance to bow pressure. Despite its small diameter, the string sounds broad and brilliant even without applying much pressure.