Why does AAERT not recommend the use of batteries for powering condenser microphones?

The correct answer highlights a significant practical concern regarding the operation of condenser microphones. Condenser microphones require a power source to operate, and if batteries are used, there is always the risk that the batteries may deplete during use. When a battery dies, it can lead to unexpected interruptions in audio recording or broadcasting, which can be very problematic, especially in professional settings where reliability is crucial. This concern emphasizes the need for a consistent and uninterrupted power supply, thus making battery use less ideal.

While other issues related to battery use may exist, such as weight or the frequency of replacement, the most pressing issue in the context of audio recording is the reliability of power. Interruptions due to a dead battery could compromise the quality of work, which is why alternative power sources—such as phantom power supplied through audio interfaces or mixers—are generally recommended instead.