Abstract: Provided are disabling and/or switching assemblies that disable a microphone when a singer or other user moves away from it. In certain implementations, the assembly utilizes a kill switch, such as a pressure-activated floor-pad switch or a proximity sensor. In another aspect, a switch assembly is provided, with the assembly including an input port for accepting a cable plug from an audio pickup device (e.g., a microphone, guitar pickup or other audio transducer), an output port and a foot-activated switch connected between the two. According to one variation, the foot-activated switch is configured to control multiple audio pickup devices. According to another, the foot-activated switch is a two-state on/off device that changes state each time it is adequately depressed and after such a depression does not change state until depressed again, thereby allowing a user to control one or more audio pickup devices largely irrespective of proximity.