The XLR connector is typically described as having how many pins?

• A. Two pins.
• B. Four pins.
• C. Between three and seven pins.
• D. Nine pins.

Answer: (C)

XLR connectors come in several pin configurations, not a single fixed count. In practice you’ll find three-pin versions for standard balanced audio like microphones, and there are four-, five-, six-, and seven-pin variants for other signals and power. Because these common variants span from three to seven pins, that range is how the number is usually described. The three-pin form is the staple for audio, while the other counts appear for different uses in live sound, lighting, or equipment that needs extra conductors. Options outside this range aren’t representative of the typical XLR family.