A hearing aid to be worn behind the ear of a user includes a microphone. An earphone is also provided. The microphone and earphone are electrically connected by a signal path. An electronic setting circuit is provided in the signal path for electrically setting at least one transmission parameter in the signal path. The electronic setting circuit is controlled by a switch of the hearing aid. A signal output device is also provided, and is controlled by the switch. The signal output device provides information to the user regarding the transmission parameter selected. The signal output device outputs at least one signal that is characteristic of every electronically set transmission parameter.