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"Create a stereo pair You can create a stereo pair with two HomePod mini, two HomePod (1st generation), or two HomePod (2nd generation) speakers. To create a stereo pair, both HomePod speakers need to be assigned to the same room. In the Home app on your iOS or iPadOS device, tap a HomePod. Tap the Settings button. Tap Create Stereo Pair and follow the onscreen instructions." Apple's HomePod User Guide Online.
Sorry, there was a problem. Please try again later.I wish. You can group two homepods into its own group, and two mini's into its own group and play music over them. However, it doesn't appear Apple has any plan to do anything with more than two speakers. There's an Apple KB article that essentially says as much.
Sorry, there was a problem. Please try again later.You can pair 2 Minis, but not as rear speakers.
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