This request is for TIDAL streaming. BubbleUPnP supports TIDAL Hires Lossless. However, there is no option for Hires MQA, even for passthrough.
Currently (outside of BubbleUPnP) when TIDAL MQA track is selected, the bitrate is up to 48kHz 24-bit (constant bitrate) without any unfolding required. If the DAC is MQA capable, higher bitrate will be shown by the DAC.
This option is important when searching for albums or artist where only CD quality is listed by BubbleUPnP even though the Hires MQA version is available when searched via TIDAL native app.
BubbleUPnP should have Hires MQA as an option, and list the albums/tracks with suffix 'M'. Let the MQA signal passthrough to the DAC.
Thanks,
Anwar