Robnik33, I agree the notes might be helpful with some updates. As there are many pages discussing MQA, I’ll try to summarize.
Originally MQA required DAC manufacturers to send them their DAC so they could alter it to process MQA, Paul along with companies like Schiit and Benchmark, did not want a second party messing with their carefully designed products. I also know that those three are not fans of MQA, they don’t think it solves anything. Not only is it lossy, but it has already been proven by Quboz that full hi-rez files can be streamed, so it really isn’t necessary. Well, there were enough owners of the Directstreams that wanted the option of MQA, and the original claim that MQA processing needed access to the DAC was changed. Look at Tidal being able to do the first unfold with their software player, then PSA found out they could do the processing in the Bridge II.
As Paul has explained to me and others is that the Bridge II is just another input. By working with the makers of the Bridge II, they were able to add not only a Room endpoint, but MQA processing. That way, PSA can continue to offer firmware updates, without having to send the DAC to MQA. As I understand it, there will be a Bridge III, built in house, that will give PSA full control of the device.
So the bottom line is that the Bridge II is the only input that has the separation and power to implement MQA. The Bridge II converts the compressed MQA stream back to an uncompressed one with the resolution of fully unfolded MQA. There are tutorials that explain how to do the updates, and how to integrate your computer or dedicated player to work with the Bridge. And the customer service people are the best in the business, always willing to help.
If I got any of this wrong, someone please correct me.