No phantom power is required since it is a dynamic microphone.
What is the difference between Telefunken M80 and M81?
Frequency Response The M81 is a great choice for a vocalist with a harsh tone, for taming overly bright horns, or for dealing with cymbal bleed. The Telefunken M80 doesn't have this low-mid boost, but instead further boosts the high-mids and highs. This makes the M80 a lot more versatile than your common dynamic mic.