Abstract: A control device for a headset audio system and a headset audio system with a control device is disclosed. The headset is configured to provide output audio to a user. The control device is configured for connection with the headset. The control device comprises a cylindrical connector section for connection to an audio output socket of an audio unit; the connector section having a longitudinal axis and a control section, which is mounted to the connector section. The control section comprises at least a volume control for the output audio. The control device is configured to, during use, mechanically lock with the audio unit, so that the control device maintains a fixed angular position with respect to the audio unit around the longitudinal axis.

Abstract: A control device is disclosed for an audio headset system including a headset and a headset microphone. The control device may include a cylindrical connector section for connection to an audio output socket of an audio unit and a control section connected to the connector section. The control section may include a mute control including a mute control input device that is manually movable between a mute position and a talk position, and mute control circuitry configured to (a) allow outbound transmission of voice audio signals received from the headset microphone when the mute control input device is in the talk position and (b) prevent outbound transmission of voice audio signals received from the headset microphone when the mute control input device is in the mute position. An audio headset system including a headset, a headset microphone, and an integral control device including a mute control is also disclosed.