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Headroom

Lyra

F-key volume control for Universal Audio interfaces, right from your keyboard.

macOS UA Apollo Menu bar
↓ Download Free Trial Buy — $14.99
7-day free trial · one-time purchase · macOS 12+
Lyra keyboard controls — F10 mute, F11 volume down, F12 volume up
Lyra menu bar popover macOS volume HUD controlled by Lyra

Features

F10 / F11 / F12 Mute, volume down, volume up — the same keys macOS uses for the built-in speaker, now working with your Apollo interface.
Menu bar Lives quietly in the menu bar. No dock icon, no windows, no UI to get in the way of your work.
Volume HUD A subtle on-screen overlay shows the current level whenever you adjust volume — just like the system does for built-in audio. Dismisses automatically after a moment.
Non-invasive Communicates directly with UA Mixer Engine. Console keeps running, your signal chain is untouched, no drivers are replaced or patched.
Auto-updates Stays current automatically. You'll be notified in the menu when a new version is available — no manual downloads needed.
Launch at login Optionally start with macOS so your keys are always ready, without you having to think about it.
Interfaces Works with all Apollo Thunderbolt interfaces — Apollo Twin, Apollo x4, x6, x8, x16, and more.

Requirements

macOS Monterey 12.0 or later
Hardware Any Universal Audio Apollo interface
Software UA Mixer Engine (installed with UA Connect or Console)
Permission Accessibility access (for global keyboard shortcuts)

How it works

Lyra communicates directly with UA Mixer Engine — the background process that powers Universal Audio's Console software. It reads and sets the monitor level through UA's local socket interface, running silently alongside whatever you already have open.

There's nothing to configure in Console, no drivers replaced, no UA software to quit. Your signal chain stays exactly as UA built it. This app simply adds the keyboard shortcuts for known, native macOS volume control.

Credits

The UA Mixer Engine communicates via a TCP protocol on port 4710. Public documentation of this protocol exists in several open-source projects, including UA MIDI Control by Radu Varga. Our implementation was written independently from scratch.

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Lyra is an independent project and is not affiliated with, endorsed by, or supported by Universal Audio. Universal Audio, Apollo, and UA Mixer are trademarks of Universal Audio, Inc.