The Long Awaited Sennheiser Vocal Mic Shootout: e935, MD 435, MD 445, and MD 431-II - YouTube
Sennheiser MD431II Profipower – Thomann United States
Sennheiser MD431 Profipower (original 80s model, same capsule as MD441 - Prince's live vocal mic!) | Reverb
Sennheiser Profipower MD 431 Vocal Mic
Sennheiser MD-431 Profi Power Microphone | Other Recording Accessories | Other Recording Accessories | Recording Separates | Audio Devices | Spring Air
Sennheiser MD 431 Profipower | Reverb
Vintage Microphone Capsule for Sennheiser MD431 Rare Free Shipping from JAPAN | eBay