An apparatus, electronic device, method and computer program wherein the apparatus comprises: processing circuitry; and memory circuitry including computer program code, the memory circuitry and the computer program code configured to, with the processing circuitry, enable the apparatus to: detect an audio module connected to the apparatus wherein the audio module comprises a user replaceable module; determine one or more parameters of the audio module; and enable the processing of the signals used for the audio module in accordance with the determined one or more parameters.