--- title: "How Sony Headphone Control Works on a Mac" description: "Sony headphones use one Bluetooth connection for audio and another for settings. How a Mac app reads and changes them, and what stays on your Mac." url: https://opensoundconnect.app/guides/how-sony-headphone-control-works-mac language: en --- # How headphone control works on a Mac Your Mac plays audio to Sony headphones on its own. Changing their settings takes a second, separate conversation, and that's what Open Sound Connect adds. Applies to: [MDR-1000X](https://opensoundconnect.app/headphones/mdr-1000x), [WH-1000XM2](https://opensoundconnect.app/headphones/wh-1000xm2), [WH-1000XM3](https://opensoundconnect.app/headphones/wh-1000xm3), [WH-1000XM4](https://opensoundconnect.app/headphones/wh-1000xm4), [WH-1000XM5](https://opensoundconnect.app/headphones/wh-1000xm5), [WH-1000XM6](https://opensoundconnect.app/headphones/wh-1000xm6), [WH-1000XX](https://opensoundconnect.app/headphones/wh-1000xx) · Updated 2026-11-03 ## Short answer Sony 1000X headphones keep their settings (noise control, equalizer, Speak-to-Chat and the rest) inside the headphones, and they accept changes over a dedicated Bluetooth control channel, the one Sony's phone app uses. macOS only uses the audio connection. Open Sound Connect opens the control channel from your Mac, sends a setting, and reads back what the headphones confirm. Nothing about it goes through a server. ## Two connections, two jobs When your headphones connect to a Mac, macOS sets up the **audio** connection: stereo playback, and a headset mode for calls when an app uses the microphone. That's all macOS needs, so it has no screen for noise canceling or an equalizer. The headphones also publish a **control service**: a small Bluetooth channel for messages like "switch to ambient sound" or "set this equalizer curve", with replies such as "battery at 80 %". Sony's phone app uses it. Open Sound Connect opens the same kind of channel from your Mac. The two are independent: - Audio can play while the controls aren't connected (that's why music works when the app is closed). - **Disconnect Controls** (⇧⌘K) closes only the control channel; your audio stays connected. - If the control channel can't open (Bluetooth access off, headphones busy or out of range) the app says so, and audio is unaffected. See [headphones connected but not detected](https://opensoundconnect.app/support/headphones-not-detected). ## Reading what each model has The headphones describe themselves when the control channel opens: their model name, firmware version, battery and the list of settings they support. Open Sound Connect shows a control only when the headphones list it, so a WH-1000XM6 shows listening modes and an MDR-1000X shows no equalizer. Two generations of Sony's protocol exist; the app picks the right one from the service the headphones advertise, not from their name. That's also why the same model can show slightly different options with different firmware: the app follows what the headphones report. The **Activity** page (⌘7) lists exactly what yours reported. ## Every change is read back When you change a setting, the app sends it and waits for the headphones to confirm it. The control updates to what the headphones actually kept, and **Activity** records each change as applied or not. Some changes, such as turning on two-device connections or choosing sound quality over connection stability, make the headphones reconnect; the app waits for them and reconnects by itself. ## Where your settings live | What | Where it's stored | | --- | --- | | Noise control, equalizer, Speak-to-Chat, power and touch settings | In the headphones, so they stay the same on your phone | | Scenes, saved curves (**My Curves**) and app preferences | On your Mac, in the app's own container | | The headphones you last used | On your Mac, so the app can reconnect | This is why [Sony EQ settings carry over](https://opensoundconnect.app/guides/sony-eq-settings-carry-over) between your Mac and phone, while scenes don't. ## What the app doesn't do - It doesn't process audio on your Mac or change what macOS sends; the equalizer runs in the headphones. - It doesn't add codecs: on a Mac, Bluetooth audio uses what macOS supports. See [LDAC, AAC and lossless on a Mac](https://opensoundconnect.app/guides/sony-ldac-aac-lossless-mac). - It doesn't update headphone firmware; that's done with Sony's phone app. See [firmware updates](https://opensoundconnect.app/guides/sony-headphone-firmware-mac). ## Privacy The control messages travel only between your Mac and your headphones. The app has no analytics and sends nothing about your headphones or listening anywhere. Website downloads check a license and look for updates; the Mac App Store version makes no network connections at all. The [privacy policy](https://opensoundconnect.app/privacy) has every detail. ## Common questions ### Can Open Sound Connect and Sony's phone app both be used? Yes. The settings live in the headphones, so a change made in either app is what the other one reads the next time it connects. ### Does the app need an internet connection to control my headphones? No. Headphone control is local, over Bluetooth. Website downloads go online only to activate and check the license and to look for updates. ## Where to next - [Headphones connected but not detected](https://opensoundconnect.app/support/headphones-not-detected): Audio works, but the app shows no headphones: permission, the control connection and what each screen means. - [Privacy policy](https://opensoundconnect.app/privacy): What Open Sound Connect stores locally, how website purchases and license activations are handled, and how the App Store version differs. - [Firmware updates and your Mac](https://opensoundconnect.app/guides/sony-headphone-firmware-mac): Why Sony firmware updates need the phone app, how each 1000X model updates, and how to check your version on a Mac. --- Open Sound Connect is independent software. It is not affiliated with or endorsed by Sony. Sony, DSEE, DSEE Extreme and LDAC are trademarks or registered trademarks of Sony Group Corporation or its affiliates. Apple, Mac, macOS, Finder, Safari, Xcode and App Store are trademarks of Apple Inc., registered in the U.S. and other countries and regions. The Bluetooth® word mark is owned by Bluetooth SIG, Inc. Other names are trademarks of their respective owners.