Roon uses OpenSL ES to accomplish audio playback on Android.

This is primarily for convenience--Audiophile quality playback on Android is still in its infancy. For an in-depth overview of the Audio Configuration in Roon, check out our Audio Setup Basics page.

By default, we set the "Max Sample Rate (PCM)" and "Max Bits Per Sample (PCM)" settings to 48kHz and 16bit, respectively.

Some Android 5.0+ devices can support higher playback rates (and many others can't). This default was a conservative choice that maximizes compatibility with the widest range of devices.

We've had good luck with up to 24/96 on recent Nexus devices. If you want, disable the limits in audio settings and see what happens. If that doesn't work out for you, flip back to the defaults.