Film history - Microphones made in Gefell and 75 years of DEFA, Microtech Gefell GmbH, Press release - PresseBox
Microphone Neumann U87 Ai
Mix Real-World Review: Neumann M 49 V Microphone - Mixonline
Microphone Neumann M147
Neumann - The Microphone Company: A Story of Innovation, Excellence and the Spirit of Audio Engineering: Rößler, Anselm: 9783937841502: Amazon.com: Books