Does the A1-MR support MQA?

The A1-MR doesn’t include any MQA specific hardware, but you can still enjoy the benefits of MQA through software decoding with services like TIDAL, where you’ll have access to up to 16-bit 44.1kHz high resolution audio.

Does the A1-MR support gapless playback?

Gapless playback works great when streaming to the A1-MR as long as the music app you are using supports gapless playback as well, such as Spotify. You would not need to adjust anything with the A1-MR or within the Audioengine A1-MR app.