Isone Pro doesn't screw up imaging at all:
Here's a fully binaural song (and a damn good one)
Turning it on and off results in no loss of imaging with my settings for my head. The only difference is soundstage width but that's fine as you do realise, that most music is mixed with nearfield speakers at 30 degrees right? Also Isone Pro gives you good instructions on how to configure the HRTF settings correctly. You did read the instruction manual right?
Hearing the music correctly for most recordings, recorded the way the sound engineers hear it. Nearfield speakers angled at over 30 degrees affects the sound naturally in the treble.
Isone Pro was designed for use in the recording industry. Think about that for a second. Not to mention Jeroen was part of the team that designed the mp4 container standard, so I think he know a little bit more about psychoacoustics and it's application than the average person.
You must configure the HRTF settings. Also headphones, due to driver size, do not shift as much air as speakers thus bass impact is affected and thus you must compensate for that.
Most headphone audiophiles impression of 'neutral' is actually bass light (particularly sub bass) tbh. My room settings are in a super ideal (see unrealistic but it's the ideal) room tbh. No early reflections (and thus no need for dampening via diffusion).
I'm a long time lurker waiting for the Mac version of JRiver. I hope it will function as a VST Host so I can start to use Isone. I know there are other work-arounds but they seem too complicated and expensive.
I'm always on the lookout for binaural recordings. Thanks posting this one. Links to any others much appreciated. Here's a link to several interesting ones ---> HERE.