While prior art hearing aids and/or tinnitus therapy devices only contribute to making an existing tinnitus condition more bearable, the invention provides for a method for operating a hearing aid and/or tinnitus therapy device as well as a hearing aid and/or tinnitus therapy device which contributes to a tinnitus being able to be eliminated over the long-term. An acoustic output signal is generated in which the tinnitus frequency and/or the tinnitus frequency spectrum are suppressed. This makes the neuroplastic reorganization of the central auditory system of a sufferer possible, which reverses the tinnitus-causing maladaptive change in their central auditory system.
