Lossless audio requirements for Sonos Ace
You can listen to lossless audio on Sonos Ace over USB-C connections or over a Bluetooth connection with a supported Android device.
Lossless over Bluetooth
Sonos Ace supports lossless audio over Bluetooth when connected to an Android device that includes Qualcomm Snapdragon Sound AptX for Lossless.
Lossless audio is not available when connected to an iOS device via Bluetooth.
Lossless over USB-C
Sonos Ace supports lossless audio when connected to a device via USB-C. Both USB-C to USB-C and USB-C to 3.5mm connections are supported.