MQS and MQA are completely unrelated. MQS is just A&K's equivalent to the Hi-Res tramp stamp, all it refers to is higher bitdepth and/or sampling rate than Red Book. MQA is something completely different, it is a proprietary bullshit lossy codec that is trying to sell itself as lossless. Another thing is that MQS appears on A&K's marketing material 2 years before MQA is even created.