Assertion: condenser microphone | /r/Desires | power
Facets:
value: from a battery
type: OTHER
value: from external source
type: OTHER
Source sentences:
text: Condenser microphones require power from a battery or external source.
text: condenser microphone requires power to produce a DC polarizing voltage and to power an internal amplifier required to drive long cables
text: Condenser microphones are active devices that require power to operate while dynamic microphones do not need additional power