Tired of reaching behind your monitor to change the volume? With Volly, just press your keyboard volume keys. That's it.
You connect an external monitor via HDMI, USB-C, or DisplayPort, press the volume keys on your keyboard — and nothing happens. You open the volume slider, only to find it's completely greyed out.
macOS doesn't support volume control for most external display speakers. No matter what cable you use — HDMI, Thunderbolt, DisplayPort — the volume is locked.
That frustration is exactly why we built Volly.
Volly makes controlling your external monitor's volume as easy as your built-in speakers.
Control HDMI, USB-C, and DisplayPort monitor speaker volume directly from your Mac. No more reaching for tiny monitor buttons.
Mac volume keys greyed out? Not anymore. Your keyboard volume keys work with external monitor speakers — just like built-in speakers.
Install and open — that's it. No complicated settings. It just works out of the box.
Lives quietly in your menu bar. Click when you need it, stays out of your way when you don't.
From install to volume control — dead simple.
Download Volly, drag it to Applications, and launch. Everything sets up automatically.
Click the menu bar icon to see all connected speakers. Pick the one you want to control.
Adjust volume with the slider or your keyboard volume keys — even for external monitor speakers.
macOS disables volume control for audio sent over HDMI, DisplayPort, and Thunderbolt because these connections carry a fixed-level digital signal. Apple doesn't support CEC (Consumer Electronics Control), so your keyboard volume keys simply stop working. Volly bypasses this limitation entirely.
When your Mac outputs audio through an external monitor's speakers, macOS greys out the volume slider because it considers the audio stream fixed-volume. Volly creates a virtual audio device that restores full volume control — slider and keyboard keys both work.
Yes. Volly works with any external monitor regardless of the connection type — HDMI, USB-C, DisplayPort, or Thunderbolt. If your monitor has built-in speakers, Volly can control the volume.
MonitorControl relies solely on DDC, which doesn't work on many monitors (especially M1 HDMI ports and certain Samsung/Dell models). Volly supports DDC when available, but also includes a software audio proxy — so volume control works even when DDC doesn't.
Yes. Volly works on any Mac running macOS 14 (Sonoma) or later, including Apple Silicon (M1, M2, M3, M4) and Intel Macs.
One-time purchase. Free updates forever. No subscription.
If Volly works fine during the 3-day free trial, it means the software is functioning as intended. However, if it still doesn't meet your expectations, you can request a full refund within 30 days of purchase — no questions asked. Please note that refunds after 30 days are generally not available. For example, we cannot guarantee full compatibility when reinstalling on different hardware at a later date. We encourage you to make your purchase decision based on your experience during the trial period.