To be used only with David Clark Panel Power (10 Pin) Headsets such as the H10-13XP and H10-13HXP. This adapter connects directly to the Contour+2 2.5mm port instead of a 3.5mm port. Most digital recorders have a 3.5mm AUX In for recording, however with the Contour+2 they use a 2.5mm port for recording.
eBay