The product itself is intuitive, easy to use and easy to install. It has generally great features and sound quality. However, a few very important caveats: 1. The support for DSD playback on USB DACs is somewhat spotty and tied directly to the Linux kernel. Some method and/or documentation for adding DAC information would be VERY helpful. Many newer DACs simply won't play DSD files without translation to PCM (and I don't mean DoP). 2. Occasionally the software seems to get confused and is unable to locate the music library. Rebooting often resolves these problems. 3. The Android app is somewhat unstable. Often can't find the device and when you switch apps, it seems to lose communication with the Volumio device at which point I have to close the app and re-open it.