The present invention pertains to a device for using audio plug-ins in a mixer, provided with a mixer and a computer, whereby the mixer has a control panel and signal-processing electronics and the computer has an audio interface, and audio plug-ins can be installed on it, in which an audio plug-in host is installed on the computer for receiving plug-ins, that the mixer has a plug-in control system, that computer and mixer are connected to one another by means of audio tie lines and at least one control line, and that the entire control, including that of the audio plug-ins, can be carried out by the mixer. Furthermore, the present invention proposes a process for using audio plug-ins in a mixer, in which audio plug-ins to be used are automatically sought by a control system of the mixer in a file folder containing plug-ins installed on a computer, and that the audio plug-ins are each assigned to an effect slot (FX slot), whereby the audio tie lines required for this are occupied, as a result of which the audio plug-in is available for use in the mixer.