What Is Phantom Power?
Updated October 2026
Phantom power is a 48-volt supply sent down an XLR cable from a mixer or interface. It powers condenser microphones, which cannot work without it.
The short version
- Phantom power is usually 48 volts, sent down the XLR cable.
- Condenser mics need it; dynamic mics do not.
- Switching it on can damage some ribbon or older mics, so check the mic first.
- USB mics have their own power and do not need it.
The short definition
Phantom power is a DC voltage, usually 48 volts, that travels down the same XLR cable that carries the audio. It is called phantom because it is invisible to a dynamic mic, which ignores it. A condenser mic uses it to power its internal electronics.
Which mics need it
Condenser microphones need phantom power. Most dynamic microphones do not. A USB condenser has its own power from the computer, so it does not need a separate supply.
How to use it
Turn phantom power on at the mixer or interface only when a condenser mic is connected, or check the mic’s manual first. Some ribbon microphones and older vintage mics can be damaged by it, so many people switch it off for those.
Common mistakes
Switching phantom power on or off while a mic is plugged in can cause a loud pop through the speakers. Turn the monitor volume down first, then change the power.
Power the mic, keep the voice clean
Tunedzy cleans the recording from any mic, including condensers. Check the power setup on your interface.
Free tools for this
Frequently asked questions
Will phantom power harm a dynamic mic?
Usually not. Most dynamic mics ignore it. Ribbon mics are the exception to check.
Do I need phantom power for a USB mic?
No. USB mics are powered by the computer.
What voltage is phantom power?
Usually 48 volts, although the standard allows other values for some uses.
Keep going
Condenser vs Dynamic MicrophoneHow to Choose a Microphone for Voice RecordingHow to Record With a USB MicrophoneAll guides and comparisons · Tunedzy Go on your phone · Pricing