Last week, I subscribed also to Tidal (previously, I used only Qobuz), and went about hearing some MQA files.
Immediately I thought the SQ dropped by a huge margin. Sound stage was narrower, the dynamics more compressed. So I enabled mqa core decoding in Roon and all the life came back to my system.
With the MQA decoding enabled, my upsampler is reporting a PCM stream, and I can select among the upsampling and filter options (I use DSDx2 upsampling). So I am wandering what is really going on here.
Is the Vivaldi receiving a “standard” PCM stream, and so the original MQA encoding plays no longer any part regarding the audio file?