Read the original article: macOS 11.3: How to Use Two HomePods With a Mac for Stereo Audio Output
With the arrival of macOS Big Sur 11.3, it is now possible to use a HomePod stereo pair as your Mac’s system audio output. This article explains how to set up two HomePod speakers as a stereo pair and then connect them to your Mac.
macOS 11.3: How to Use Two HomePods With a Mac for Stereo Audio Output