No sound from AirPods connected to iMac

"No sound from AirPods connected to iMac: My AirPods connect with my iMac, but I cannot hear any sound."

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Troubleshooting Muted AirPods:

How are you Using these?

A. For Phone Calls:

Go to the System Settings app, then click the name of your AirPods in the sidebar (you may need to scroll down). Click the pop-up menu next to Mute & Unmute or the pop-up menu next to End Call, then choose an option. The other option automatically switches.

Source: Change settings for AirPods or AirPods Pro - Apple Support (GE)

B. Interference of Sorts:

So, Two Links to Refer to:

• If your AirPods Pro Make Crackling or Static Sounds - Apple Support
• If the Sound from your Wireless Headphones Cuts Out or is Distorted - Apple Support