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 . <EOS>