A junction box that can be used with a headset, as a replacement for or in addition to staff speaker-and-microphone units in speech transfer systems. It is particularly useful in environments where background noise affects a staff member’s ability to hear customers. It helps to reduce background noise by negating the need for a staff loudspeaker. It is also useful in compact spaces that do not allow for a unit to be placed on the desk or counter, as the unit can be mounted to any flat surface.