There is an audio store in California named Audio High that recorded pianist Robert Silverman playing the compete Beethoven piano sonatas in a series of charity concerts. They have released, for download, 23 of the sonatas in three formats: MQA, CD quality (.wav), and MP3. Detailed liner notes are included. Information is on their website.
I’m very impressed with what I’ve heard using a Meridian Explorer2 to fully unfold MQA. To my ears there is much to recommend MQA over standard CD resolution.