The Sennheiser MD 421 is a German cardioid dynamic microphone, widely used for speech in broadcasting and for music in live concerts and the recording studio. Introduced in 1960, the internal large-diaphragm transducer element of the MD 421 is still produced unchanged by Sennheiser. The MD 421 is considered a classic, an industry standard. More than 500,000 units have been sold.[1][2]
- ^ Petersen, George (October 10, 2020). "Sennheiser Celebrates 60 Years of the MD 421". FOH. Retrieved July 24, 2021.
- ^ Inglis, Sam (March 2021). "Legendary Studio Mics You Can Still Buy New". Sound on Sound. Retrieved July 22, 2021.