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iFi AC iPurifier - Video Mini Series - The look, the tech, the lowdown. MORE ADDED!

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  1. BunnyNamedCraig
    Yes excuse me, I don’t want to confuse anyone! The iUSB3.0 is for usb connections only. The effects that @m usicguy described is exactly what I got from the iUSB3.0
     
  2. Yviena
    Just wondering but would the ifi AC purifier work even if the socket is ungrounded but ground wire is present?
     
  3. iFi audio
    If a socket has no earth connection it MUST NEVER be used with equipment requiring an earth connection.

    A missing safety earth can lead to injury or death, will potentially void insurance coverage in case of injury or other damage etc., thus should be swiftly addressed by a qualified electrician before anything else is done. The power system should remain turned off at the fuse panel and without power until the earth is correctly (re)attached.

    There are some specific cases where an earth MAY be omitted, namely balanced power referenced to earth for which each phase has below 60V RMS voltage. These are very installation specific and the electrician who installed the system should be consulted.

    Past that the AC iP contains two distinct sections.

    One operates on differential noise - that is noise between live and neutral. This section works even without an earth connection.

    The second works on common mode noise. This requires an earth reference but not a safety earth. Normally an earthed socket is presumed - as electrical installation codes nearly universally requires a safety earth.

    However for the AC iP the "earth reference" can be applied from a non-safety earth, e.g. a earth spike driven into the actual ground or from metal water or heating pipes connected to the building structure etc. by connecting the 4mm socket on the top of the AC iP to the alternative earth connection.

    Note, if an earth connection is present in the socket, do not add an external earth reference, this may trip circuit breakers or cause noise.
     
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  4. Yviena
    Hmm I believe that I do have a safety earth with the box itself being grounded but that the scuko outlet is missing the ground springs at the sides, so it's just a matter of changing the outlet.
     
  5. quadels

    I got one, and I agree completely.
     
  6. NickedWicked
    +1 not a huge difference but it does indeed improve in those area's, I've removed the three I have from my powerstrip for a month and when I plugged them back in I instantly noticed the subtle blackness that comes with them, without affecting sound quality. If you have a monitor or TV with a mediocre internal power supply these will help a lot as well in terms of vibrancy and accuracy!
     
  7. iFi audio
    Not a huge difference but a small yet noticeable upgrade which becomes more present in time, that's the idea. Cleaner background is what our AC iPurifier is all about.
     
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  8. buonassi
    yes, cleaner background if you have less than perfect power - which just about every does. I found that it worked best at the distribution block or power strip vs at the wall outlet. For me at least.

    remember, this is a tweak, a small improvement - so don't expect to suddenly hear angels whispering or anything like that. The good news is that dynamics are entirely unaffected. Unlike a power-strip filter, there is no ferrite choke the power goes through, so you get full amperage bursts when called for!
     
  9. quadels
    My location with its AC quality and my system seem to be very prone to AC noise degradation. I find that the AC iPurifier makes a profound difference on my system. This is with HiFiMan HE1000V2 headphones, Woo Audio WA6SE amp, Yggdrasil DAC and Ayon transport. The noise floor lowers considerably, layers of grit and grunge are removed, the overall sound is much more transparent.

    I was already using a couple of homemade passive plug-in AC filters, simply a couple of small value polystyrene capacitors (.0056uF 600V) connected across AC and Neutral. By themselves they caused a distinct though smaller improvement along the same lines as the AC iPurifier. I found that with these small value filter caps that presumably affect only very high frequency noise on AC, the capacitor dielectric is still important; it still seems to affect the sound quality. Polystyrene is the highest quality inexpensive dielectric used in capacitors available in these values.

    The iPurifier greatly magnified the improvement.

    As an experiment, after plugging in the AC iPurifier I removed the homemade AC filters. I discovered that these small value polystyrene caps were significantly enhancing the effect of the iPurifier. They are essentially an effective tweak to the iPurifier. I theorize that they introduce a better dielectric (polystyrene versus probably polypropylene or polyester or perhaps even ceramic used in the iPurifier) to the passive filter in the iPurifier, and perhaps slightly extend the frequency range of its coverage.
     
    Last edited: Aug 9, 2018
    Alcophone likes this.
  10. iFi audio
    Great stuff, thanks and enjoy!
     
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  11. Arniesb
    Hello Ifi, does nano usb power supplier should omit noise? Like quiet high frequency sound? Is it noise canceling i suppose?
    Thanks.
     
  12. iFi audio
    Can you please explain about which iFi product we're talking here? Do you mean iPower finished with micro USB plug?
     
    Last edited: Aug 23, 2018
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  13. Arniesb
    Iusb nano 3.0. Wall wart power supply
     
  14. iFi audio
    iFi audio Stay updated on iFi audio at their sponsor page on Head-Fi.
     
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  15. Yviena
    @iFi audio what does it mean if the polarity led is red no matter the orientation, this is in Norway so unsure if polarity is detected correctly.
     
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