Abstract: A communications headset in which a unidirectional microphone at the end of a support boom is adjustably secured in a position selected by the wearer. The support boom is clamped under adjustable compression in a ball-and-socket arrangement which, at reduced compression, allows the boom to be moved longitudinally, pivoted about its axis, or pivoted about the center of the ball. The wearer turns a knob to compress the ball-and-socket joint to secure the boom in the position desired. A tube transmitting sound from the receiver to an ear plug is adjustably attached to the headset by means of a second ball-and-socket joint. A pivoting clamp attached to a pivoting temple member permits the microphone support assembly to be switched from one side of the head to the other as desired.