This is what Apple should have done with their Music app – Onkyo HF Player - Hi-Res Music Review

The developers have done an amazing job. I was skeptical about the value of upsampling the sound; I figured if it's already downgraded to 256 kb/second, the damage has already been done. I am very happy to be mostly wrong in this case. I'm sure I'm going to be buying the HD upgrade soon, so that I can see how well this handles actual HD files, since it does a great job on lower bitrate files, even without the use of the equalizer. I was just looking for a replacement for the Denon Audio app, which appears to be a bit of an off for now, I'm glad I found this as a replacement. Apple's own aggravating music app is no match for this. The only thing that I would change about this app would be to turn up the sensitivity of the touch screen when adjusting the equalizer. It only seems to pick up that you're pressing on one of the handles when you start moving it. So sometimes you end up tapping more than once and end up creating additional handles that you don't need. This, however is something I can live with, since it's just a question of realizing what the app is doing and remembering it for the next time. A fantastic thing that I discovered was that the equalizer scale can be expanded or reduced by pinching outward or inward as necessary giving you more or less resolution as you need. A nice touch. Thumbs up to the Onkyo Corporation for this app!
Review by Miketikasingh on Onkyo HF Player - Hi-Res Music.