In fact, there is a dead knot that no one can untie, and that is commercial interests. DSD is a further research and development achievement of Sony based on Philips. Based on psychoacoustics, it makes harmful music on DVD to improve the feeling and protect the copyright, so it has won the support of almost all record companies. However, in order to maximize the benefits, Sony will charge a high patent fee, which will lead to SACD's failure to obtain the status of vinyl records in the past, and it will be marginalized and will be ruthlessly eliminated like MD in the future.
In fact, PCM 1704 is the highest peak of human audio technology at present, because the human ear limit is 24/48, and the higher it is, it will only add post-stage functions such as material mixing to the recording studio. However, for the benefit of record companies, there must be a new chip that can adapt to DSD, and even if it is not good, it will be profitable.