Which type of audio connection is typically used for professional microphones?

The XLR connection is the standard for professional microphones due to its design and functionality. XLR connectors provide a balanced audio signal, which helps to minimize noise and interference, making them ideal for professional environments where high-quality sound is essential. The three-pin design allows for secure locking and reliable connections, which is crucial in live performance and recording settings.

Moreover, XLR connections accommodate different wiring schemes that can support a variety of microphones, including dynamic and condenser types. This versatility, along with the durability of the connectors in professional situations, solidifies XLR as the preferred choice. In comparison, other connector types listed, such as RCA, mini-jack, and HDMI, are typically used in consumer audio and video applications, making them less suitable for professional microphone use.