is is said…that the streamer in the PMG512 is better than the AirLens
How can this be stated as fact? Listening to the 512 streamer is presumably overshadowed by its DAC, and their relative contribution cannot be defined. I would expect on 512 DAC benefits are where the SQ derives, not the streamer.
We shall see how folks distinguish the relative merits to overall SQ of the PMG512. Someone may figure out how to disconnect the streamer and listen to the isolated DAC.