If you re new to the audio scene, let s start with a few basic electronic concepts then move on to Microphones and see how all of the connections are made, audio and phantom power. Audio is considered an Alternating Current, a.k.a. Like a speaker in reverse, a dynamic mic consists of a coil of wire suspended in a magnetic field. The preamplifier inside Vacuum Tube microphones requires both plate and filament voltages. Transistorized microphones require much less power and can operate from a battery, hence the idea for phantom power, a system of distributing a DC voltage through a standard mic cable.
Every precaution is taken to minimize noise.
A guitar cable uses a single conductor plus a shield, an unbalanced signal. A good ground connection also improves noise immunity. A kick drum creates air pressure that moves the mic diaphragm, generating a positive going voltage on pin-2. However, be very careful when interfacing unbalanced gear that uses XLR connectors. This is in direct contrast to a passive electric guitar, which is an unbalanced, hi-Z device that is susceptible to every snap, crackle and pop technology can generate.