With vintage Neumanns, the serial number tells you more than just the age; it tells you the "version." For example, early U87 microphones (the "i" version) have different battery compartments and output transformers than the modern U87 Ai.
Neumann serial numbers are usually located on the bottom of the microphone near the XLR connector. On older tube models, like the U47 or M49, you may find the number engraved on the base ring or the power supply unit. On modern classics like the U87 Ai, the number is typically laser-etched into the metal housing near the base. check neumann serial number
Once you have verified your serial number, register the product on the Neumann website. This creates a digital paper trail for your ownership. This is helpful for: Ensuring you get the full support period. With vintage Neumanns, the serial number tells you