 The purpose of the proposed study is to quantify VoIP vs. conventional telephone speech comprehension in individuals with or without application of bluetooth phone clip. Potentially better speech comprehension due to the application of the phone clip could alleviate the handicap of communication in individuals with hearing aids. As a consequence the social life and contacts of the affected individuals such as worsening of mental state and dependency in the everyday life could be ameliorated only by using a simple device. 