The invention relates to a hearing aid with a signal processing unit (14) and at least two microphones (1, 2, 3) which can be coupled together to form directional microphone systems of a different order, where microphone signals (11, 12, 13) emitted by directional microphone systems of a different order can be coupled together in a weighting dependent on the frequency of the microphone signals. The invention further relates to a method for operating a hearing aid of this type.