“Sound-wise, the iFi Purifier is definitely NOT snake oil. What I noticed – and it’s not my imagination – is that some of the higher frequency “grundge” was no longer there. In addition, something happened with the bass that I was not prepared for, and that was the bottom end (or what your speakers can handle) was a bit more defined and tight – now that was a stunner for lack of a better description.
Some of the orchestral pieces that I enjoyed listening to (and use as my reference standard for evaluation purposes) now were presented in an even cleaner fashion – with no harsh overtones or harmonics. It was (especially with some orchestra pieces) as if a small yet very distinguishable veil was lifted between you and the orchestra.
All of a sudden I felt more connected with the musical environment. High’s that previously had lots of bite (raspy sounding for example), now were substantially smoothed out, at the same time providing more “air” around the instrumentation. And this leads to a longer listening time without listening fatigue.”