Chorus Blog - guides to Mac audio

Multiple Speakers How to play audio through two speakers at once on a Mac macOS can send the same sound to several outputs, but the built-in way to do it hides the volume control and drops devices without warning. Here is the whole picture, and the tidier route. 6 August 2026 · 7 min read

Fixing Problems Why your Mac's volume slider greys out on a multi-output device Build a Multi-Output Device in Audio MIDI Setup and the menu bar slider stops working. It is not a fault. Here is what macOS is actually doing, and how to get a real volume back. 4 August 2026 · 6 min read

Per-App Audio How to send one app's sound to a different output Music to the kitchen speaker, calls to the headset, everything else to the desk. macOS has no setting for this, so here is how per-app routing works and what it needs from you. 30 July 2026 · 7 min read

Multiple Speakers Using two Studio Displays as one audio output Two displays, two sets of speakers, and macOS will only talk to one of them at a time. A walkthrough of pairing them into a single output, with the balance set so the desk sounds even. 24 July 2026 · 6 min read

Per-App Audio How to set a separate volume for each app on a Mac One system slider for everything means a loud game and a quiet call share the same setting. Here is how per-app volume works on macOS, and what it can and cannot reach. 17 July 2026 · 5 min read

Shortcuts Keyboard shortcuts for switching audio devices on a Mac Option-clicking the volume icon works, but it is still three moves. How to put your speakers, your headphones and your microphone on keys you can actually reach. 10 July 2026 · 5 min read

Microphones How to choose which microphone your Mac uses Your Mac picks an input for you, and it often picks badly. How to see every microphone attached to the machine, choose the right one, and stop apps quietly overriding it. 3 July 2026 · 5 min read

Explainers What is an aggregate device, and how is it different from a multi-output device? Audio MIDI Setup offers both, names them almost identically, and explains neither. What each one is really for, when you want which, and the drift problem behind both. 26 June 2026 · 8 min read

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