In my opinion that trick of lowering the midbass region by few db in order to give the impression that there is more resolution and more details in the rest of the audible spectrum is totally unacceptable. I have seen the same trick used on and on by cable or DAC manufacturers and it pisses me off.
In order to understand where is the real difference between the Amarra and Pure Music try a comparison between your DAC and a Benchmark. You will hear exactly the same effect. Same with cables (I have personally compared my Argento Flow with a Stealth Indra RCA interconnect and heard exactly the same).
Except the midbass gap, there is also a phase shift in some upper frequencies that gives you the effect of the deeper soundstage. But then, was this depth really what the mastering engineer had in his mind or is it created by the software using those phase shift tricks?
In order to understand where is the real difference between the Amarra and Pure Music try a comparison between your DAC and a Benchmark. You will hear exactly the same effect. Same with cables (I have personally compared my Argento Flow with a Stealth Indra RCA interconnect and heard exactly the same).
Except the midbass gap, there is also a phase shift in some upper frequencies that gives you the effect of the deeper soundstage. But then, was this depth really what the mastering engineer had in his mind or is it created by the software using those phase shift tricks?