The Sennheiser HMEC 461 is a high-quality aviation headset with superior comfort and noise-cancelling technology. Ensure optimal performance by referring to the Instructions For Use Manual, available for free download from manualshive.com. Elevate your flying experience with this top-of-the-line headset.
The microphone sensitivity has been factory pre-set to 80 mV/Pa as per RTCA DO-214. You can change the microphone sensitivity by turning a small screwdriver in the direction of the arrow.