It changes the sample rate, probably makes it mono, and also changes the balance (instead of 50L/50R it's like 30L/70R) macos - android emulator does not play sound on bluetooth android macos audio android-emulator avd For OS X the Android Emulator uses the settings for Sound Effects so this is what I had to do to fix my issue: Click the Apple icon in the top left, then click on System Preferences Click on Sound Click on Sound Effects Set Play sound effects through to Selected sound output device Set the Alert volume almost at max Android emulator makes audio over bluetooth sound terrible Whenever I start an Android emulator it makes the sound over my bluetooth headphones terrible, on my MacBook pro mid-2015. Even when the voice of the iMac is mute, Emulator sound could be heard from speaker.

but Android Emulator audio not connect to headphone and play sound on iMac speaker. Bluetooth headphone connected to iMac (macOS Sierra v 10.12.2) and system audios could be heard from headphone.