Thought I'd kick off a dedicated thread for this little beauty. I was lucky enough to win this over on the iFi iUSB3.0 thread I have a Schiit stack connected to my PC, a Modi DAC and Magni class AB amp. I play Hi-Res tracks quite happily through my HE-500 phones. I figured this would be as good a test as anything for the iPurifier 2. The device itself is very robust and well engineered. As you can see from the photos it's fairly discrete. There are a couple of indicator lights for Power and Sound signal. Apparently the device also comes with a range of connector options. I have the USB-B but it comes in A, C and Micro B also (according to the box) I've got to say, I really wasn't expecting much, if any improvement in the audio quality from my Schiit stack as it is a fairly silent and quite revealing setup. For my test I fired up one of my most familiar and favourite test albums, Rumours by Fleetwood Mac (in 24/96 from HD Tracks - the max the Modi can handle) and listened to the first few tracks a few times. I then added the iPurifier to the chain. Again, I listened to the first few tracks. At first I didn't really notice too much of a difference, until I got to the second track, Dreams. The splash cymbal at the beginning caught me by surprise a little, it seemed more sustained and cleaner than I remembered. I looped this part of the track a few times, removed the iPurifier and repeated. Sure enough, I can tell the difference pretty easily. After a few hours of listening with the ipurifier attached, I've decided it's staying put in this setup. To my ears it makes a good difference to the general soundstage (width especially) and overall clarity of the sound. I like it!