The whole promise of MQA to labels was to give them a way NOT to release music in high-res equivalent to studio master, and still get some improvement over CD quality just enough to make people buy the same music again. This is actually good that it didn't fly- otherwise we won't see any more high-res releases. As to apodizong filter with no pre-ringing, that type of filter is available in some DACs independently of MQA.
