An intercom signal mixer comprising: a first input configured to receive first audio; a number of first busses operable to receive the first audio data from the first input, each of the number of first busses configured to deliver the first audio data to a respective one of a number of external devices; a number of second inputs configured to receive second audio data comprising channel audio from the number of external devices, each of the second inputs configured to receive the channel audio from the respective external device of the number of external devices; a second bus operable to receive the second audio data, the second bus configured to output selected audio, the selected audio comprising a selective mix of the channel audio; a number of channel controls, each of the channel controls associated with one of the number of second inputs; and a display operable to render information related to the channel controls, the rendered information comprising a number of channel tiles, characterized by each of the number of channel tiles corresponding to a respective subset of the number of channel controls, wherein the channel tiles are operable to display an assignment of the respective subset of the channel controls to a particular one of the number of second inputs, the assignment showing a selection of one of the number of second inputs accessible from a scrollable list of the number of second inputs displayed in a carousel arrangement, and wherein the respective subset of the channel controls is associated with the particular one of the number of second inputs, and wherein the channel tiles are rendered in an order to correspond to a same order of channel controls, each of the ordered channel tiles corresponding to an associated subset of the number of channel controls. a first input configured to receive first audio; a number of first busses operable to receive the first audio data from the first input, each of the number of first busses configured to deliver the first audio data to a respective one of a number of external devices; a number of second inputs configured to receive second audio data comprising channel audio from the number of external devices, each of the second inputs configured to receive the channel audio from the respective external device of the number of external devices; a second bus operable to receive the second audio data, the second bus configured to output selected audio, the selected audio comprising a selective mix of the channel audio; a number of channel controls, each of the channel controls associated with one of the number of second inputs; and a display operable to render information related to the channel controls, the rendered information comprising a number of channel tiles, characterized by each of the number of channel tiles corresponding to a respective subset of the number of channel controls, wherein the channel tiles are operable to display an assignment of the respective subset of the channel controls to a particular one of the number of second inputs, the assignment showing a selection of one of the number of second inputs accessible from a scrollable list of the number of second inputs displayed in a carousel arrangement, and wherein the respective subset of the channel controls is associated with the particular one of the number of second inputs, and wherein the channel tiles are rendered in an order to correspond to a same order of channel controls, each of the ordered channel tiles corresponding to an associated subset of the number of channel controls.