The Sennheiser MKE 40 is a condenser lavalier microphone featuring a cardioid polar pattern, designed to deliver clear, natural voice reproduction for professional live sound, presentations, theater, television, and conferencing applications. Its directional design ensures excellent speech intelligibility by reducing ambient noise pickup and increasing gain before feedback, making it an ideal choice for demanding environments.

With its balanced frequency response and enhanced low-end reproduction, the MKE 40 delivers defined, consistent sound, while its compact, rugged construction ensures reliable performance during heavy use. It is available in versions compatible with various Sennheiser wireless transmitters—including the evolution wireless (EW) and SpeechLine series—serving as a professional solution for speakers, actors, presenters, and audiovisual productions.