iFi iPurifier 2 - Reviews, Impressions and Discussion Thread
Mar 25, 2016 at 1:10 PM Post #226 of 592
  Does the iPurifier2 add anything when used with an iUSB3? My guess is 'not much', but it might add a bit more when used with an iUSB2?

iFi's come on here saying, nada...is redundant...
even on their site, if you visit it, it goes over this.
scroll to bottom
http://ifi-audio.com/portfolio-view/accessory-ipurifier2/
 
 

 
 
 
however, if i recall correctly when the ipurifier 2 is paired with the 'older' usb 2.0, the synergy
can get pretty close to what the newer iusb micro 3.0 puts out...if i'm wrong then someone or iFi
can please correct me.
 
my new tool: snippet which i used above...hope others find it useful, too
http://www.howtogeek.com/207754/how-to-use-the-snipping-tool-in-windows-to-take-screenshots/
 
Mar 27, 2016 at 4:43 PM Post #227 of 592
i just picked up an ipurifier 2 to try out...couldn't resist: got it for a steal.
 
my rig is pretty simple:
laptop ->ifi mercury cable->(new) ipurifer 2->iDSD...then out to iems/cans or ->headphone tube amp
 
i was / am considering the iusb 2.0 and 3.0...but schiit and uptone, among others,
 (so i've heard from uptone owner)
are soon coming out with new products this yr that allegedly will address more comprehensive usb/signal conditioning
(possibly even galvanic isolation issues)
...so I might sit tight.
 
i wonder if iFi is working on something similar with new releases.
 
seems this area of usb/signal conditioning is a fast emerging one, with numerous players
often at odds with one another over the best approach (see links below)....thus for the 'lowly neophyte' like
 
me, with no electrical engineering competencies, i'm left often scratching my head in confusion.
confused.gif

...tis so easy to misspend one's funds if they're going to the wrong area....glad my rig is relatively simple
 
john darko,  said he's doing a f/u shortly on his own article that came out recently.

http://www.digitalaudioreview.net/2016/03/fighting-fit-usb-audio-from-wyred4sounds-recovery/

 
other related threads on signal/usb conditioning:
http://www.computeraudiophile.com/f6-dac-digital-analog-conversion/comparison-thread-recovery-universal-serial-bus-industry-standard-cables-connectors-and-communications-protocols-between-computers-and-electronic-devices-reclocker-regen-and-similar-devices-curated-thread-27465/
 

Science Thread: Review of Audioquest Jitterbug and Uptone Regen USB Conditioners

http://www.whatsbestforum.com/showthread.php?18580-Science-Thread-Review-of-Audioquest-Jitterbug-and-Uptone-Regen-USB-Conditioners
 
this all stemmed from me asking for some assistance on this area, for direction:
one helpful and qualified headfier,  electrical/audio engineer had sent me this, from another thread i had started:
http://www.head-fi.org/t/802190/usb-conditioners-a-growing-field-anyone-else-get-confused-by-terms-and-claims#post_12452692
1 week, 1 day ago



 
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By far the best usb treament is to isolate the ground between the source (eg pc), and the dac.

Cleaning power and reclocking are nice, but are an order of magnitude less effective than true isolation, including the ground. The ground is a power supply feed as well.

Isolation comes in several forms, galvanic (tranformer based, solutions I've seen tap out at 92 khz), optical (pricey), silicon.

In my system in lowered the noise floor (quite audibly), and significantly cleaned up the audio quality. Theyre especially effective if the source is safety grounded (3 prong ac plug)

his qualifcations:  I'm an electrical engineer that majored in audio design and worked as a professional audio, acoustics, hardware and audio DSP design engineer for about 12 years before moving into fiber optics.  Still have fun with audio design as a hobby (building an ncore amp as we speak).





 
Mar 29, 2016 at 5:48 PM Post #228 of 592

The Gadget Show - iFi giving out free tickets - first come first served.


iFI audio is exhibiting at the Gadget Show from Thursday 31st March through to Sunday 3rd April. This is the UK’s largest electronics show held at the Birmingham NEC. There are some 75,000 visitors.
 

We have a limited number of FREE tickets for any customers planning to attend.
 
http://www.gadgetshowlive.net/visiting
 
Just message us on FaceBook with your contact telephone and we’ll contact you.
 
https://www.facebook.com/iFiAudio/
 
Able to play with drones, test drive Teslas and listen to DSD512 on the Retro Stereo 50. What more could one wish for?
 
iFi audio Stay updated on iFi audio at their sponsor profile on Head-Fi.
 
https://twitter.com/ifiaudio https://www.instagram.com/ifiaudio/ https://ifi-audio.com/ https://www.youtube.com/@iFiaudiochannel comms@ifi-audio.com
Mar 30, 2016 at 9:00 AM Post #229 of 592
Very interested in the iPurifier 2.
I noticed this is a USB 2.0 device with a 3.0 type B input socket.
Can I plug my good old USB 2.0 type B cable to use the device, or do I need a USB 3.0 cable?
I know this is a stupid question but it looks like 3.0 type B socket is compatible with 2.0 type B head, so I just gonna ask just to make sure I don't have to get another cable.
 
Mar 30, 2016 at 10:02 AM Post #230 of 592
Very interested in the iPurifier 2.
I noticed this is a USB 2.0 device with a 3.0 type B input socket.
Can I plug my good old USB 2.0 type B cable to use the device


Yes.
 
Apr 4, 2016 at 5:43 PM Post #232 of 592
Anyone have Grace m920?  I'm having difficulty with the Grace using Windows 8.  IP2 is plugged into adapter then the grace. When I power on the Grace it disappears from the sound control panel. 
 
Apr 5, 2016 at 6:19 AM Post #233 of 592
  Anyone have Grace m920?  I'm having difficulty with the Grace using Windows 8.  IP2 is plugged into adapter then the grace. When I power on the Grace it disappears from the sound control panel. 

 
Hi,
 
Should be plug and play.
 
Can you open an STS here:
 
http://support.ifi-audio.com/
 
A techie will look at this for you.
 
Thanks.
 
iFi audio Stay updated on iFi audio at their sponsor profile on Head-Fi.
 
https://twitter.com/ifiaudio https://www.instagram.com/ifiaudio/ https://ifi-audio.com/ https://www.youtube.com/@iFiaudiochannel comms@ifi-audio.com
Apr 6, 2016 at 3:16 PM Post #234 of 592
Using this iPurifier 2 has a couple of benefits. The one that stood out the most for me is soundstage. It´s more "3D"-like to me (depth/width). And this is out of a headphone that I didn't think had that good soundstage in the first place (Focal Spirit Pro). Combining it with Audioquest Jitterbug I think the sound levels up some more - can hear vocals a little clearer and perhaps slightly tighter/cleaner bass. Impressions out of a Resonessence Labs HERUS+ Dac/Amp (all in all a very good portable solution with the Jitterbug and iPurifier 2).
 
Apr 16, 2016 at 2:51 AM Post #237 of 592
I have two systems, one at work and one at home. They are as follows:
 
  1. Work: iPad > CCK > high-quality, but not-too-special USB cable > Schiit Wyrd > custom Elijah Audio USB cable (similar to Forza Audioworks Copper Series Twin) male A to female A > micro iDSD
  2. Home: PC (Tidal / Fidelizer Pro 7.1) > USB 3.0 cable > nano iUSB3.0 > Gemini > Gustard U12 > AudioQuest VDM-5 coax > Schiit Bifrost Multibit > AudioQuest King Cobra RCA > Lyr 2
 
For work, since I have that custom female A cable for the iDSD, the only place I can really put it in that chain is before the Wyrd (directly into the Wyrd). I suppose I can use some adapters if I want to place it after (or use a different cable, or get a iP2 with the female A, but that kind of limits my use, so that's a non-starter), but again, does it matter where its placed in this chain? What is the logic / science behind where its placed?
 
For home, although @iFi audio mentioned that the iP2 is redundant with the iUSB3.0, has anyone tried putting the iP2 before or after the iUSB3.0? Any differences to sound? Does it make any difference where its placed in this chain?
 
Thanks in advance.
 
Apr 16, 2016 at 3:47 AM Post #238 of 592
  I have two systems, one at work and one at home. They are as follows:
 
  1. Work: iPad > CCK > high-quality, but not-too-special USB cable > Schiit Wyrd > custom Elijah Audio USB cable (similar to Forza Audioworks Copper Series Twin) male A to female A > micro iDSD
  2. Home: PC (Tidal / Fidelizer Pro 7.1) > USB 3.0 cable > nano iUSB3.0 > Gemini > Gustard U12 > AudioQuest VDM-5 coax > Schiit Bifrost Multibit > AudioQuest King Cobra RCA > Lyr 2
 
For work, since I have that custom female A cable for the iDSD, the only place I can really put it in that chain is before the Wyrd (directly into the Wyrd). I suppose I can use some adapters if I want to place it after (or use a different cable, or get a iP2 with the female A, but that kind of limits my use, so that's a non-starter), but again, does it matter where its placed in this chain? What is the logic / science behind where its placed?
 
For home, although @iFi audio mentioned that the iP2 is redundant with the iUSB3.0, has anyone tried putting the iP2 before or after the iUSB3.0? Any differences to sound? Does it make any difference where its placed in this chain?
 
Thanks in advance.

I cannot answer all your questions but as far as i know the iUSB3 has all the functionality of the iP2 built into it.This is in comparison with say the original iUSB, so it is unlikely to add anything which is where ifi Audio are coming from I'd guess. In terms of where to place the iP2 in the chain, I am a fairly sure that ifi Audio originally suggested putting in just ahead of the DAC but now are saying to put it as early on in the chain as possible. In my ifi Audio system it lives just after my Mercury cable from my PC and just before the iUSB (original) and that way no extra adaptor is needed either. It works well in that location but the great thing of course is that you are able to try it in different locations to see if you prefer one over another.
 
Hope that this helps a bit!
 
Apr 16, 2016 at 3:51 AM Post #239 of 592
I cannot answer all your questions but as far as i know the iUSB3 has all the functionality of the iP2 built into it.This is in comparison with say the original iUSB, so it is unlikely to add anything which is where ifi Audio are coming from I'd guess. In terms of where to place the iP2 in the chain, I am a fairly sure that ifi Audio originally suggested putting in just ahead of the DAC but now are saying to put it as early on in the chain as possible. In my ifi Audio system it lives just after my Mercury cable from my PC and just before the iUSB (original) and that way no extra adaptor is needed either. It works well in that location but the great thing of course is that you are able to try it in different locations to see if you prefer one over another.

Hope that this helps a bit!


Thanks, it does! I will most likely use it in my work setup putting it into the Wyrd input, but will give it a try in my home setup before iUSB3.0 and before my Gustard U12 (where the USB portion of my chain ends).
 
Apr 16, 2016 at 5:44 AM Post #240 of 592
I cannot answer all your questions but as far as i know the iUSB3 has all the functionality of the iP2 built into it.This is in comparison with say the original iUSB, so it is unlikely to add anything which is where ifi Audio are coming from I'd guess. In terms of where to place the iP2 in the chain, I am a fairly sure that ifi Audio originally suggested putting in just ahead of the DAC but now are saying to put it as early on in the chain as possible. In my ifi Audio system it lives just after my Mercury cable from my PC and just before the iUSB (original) and that way no extra adaptor is needed either. It works well in that location but the great thing of course is that you are able to try it in different locations to see if you prefer one over another.

Hope that this helps a bit!
The last I saw, an iFi representative here recommended putting the iP2 before the iUSB (assuming you meant that not DAC) only if your DAC draws any power from USB.

iFi also definitively stayed that the iP2 would serve no purpose used in conjunction with the iUSB3.0
 

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