I recently purchased a ifi ipower and I was impressed with the quality I heard from it.
So after hearing so much positive about the ipurifier3 I decided to give it a try hoping it may clean up the signal a little more.
I don't know if this has a burn in but i did let it run at low volume for about 24 hours.
I had one recording in mind to test this out (Holy Cole - Larger than Life - dsd ) The beginning of the song (at fairly loud volumes) really tests my systems sound floor.
I started the song and l it was plain as day that this ipurifier was doing somthing. There was no reduction in my slight background "hiss" but there was a higher frequency noise I never heard before. Then when the brushes start going across the drums well with the ifi purifier I had a hard time telling what that subtitle sound was (im hearing this from 10 feet away) So I pause playback crank the volume to max and whoa the whine is measurably there (literally). I reboot everything still there, remove the ifi ipurifier3 and whola not there.
The ipurifier3 was connected from my passivly cooled ssd ran ifi powered computer to my smsl su-8 dac, and im using a audioquest carbon usb cable.
I have always had multi channel surround setups and Right now im in the process of figuring out what my 2 channel listening sytem will be, hence all the tinkering with my source to my tempory dac.
Anything else I should trying as I figure this probably is a defective item.