If the position of the loadspeaker is so lmportant then I think that the difference between MQA-files and PCM-files is not big.

My room is about 65 square meters. The room correction in the 861 is almost zero. So I think the room is very good for music listening. When listening to music through my Prime I experienced the same quality for PCM and MQA-files. I had great expectations to MQA but today I don't think it is the final solution for digital music.

861v8+ID41, HD621, G98, Arcam P35, DSP7200SE, DSP7200HC, SW1600, DSP320.
2xMS600, 2xMS200, 2xDSP3200, AC200, Explorer2, 2x218, AD88, Prime, 251, 210