In 1878, Siemens, now Sivantos,ﾠdevelopedﾠ the ﾠPhonophor, the first ﾠtechnicalﾠ solutionﾠ for ﾠhearing ﾠloss.

The history of electrical hearing assistance instruments originated with technological advances in telephones at the end of the 19th century when Werner von Siemens integrated a horseshoe magnet in the receiver of a telephone, and succeeded in substantially improving transmission quality in the telephone.