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

[Matias]

Bought 3, let's see/hear!

 

[Alcophone]

I was looking for surge protectors the other days. I saw the Furman SS-6B, which just says "RFI/EMI Filtration". Then I saw the Furman PST-8 DIG, a total beast compared to what I'm used to, which says "> 40 dB from 150 kHz - 100 MHz, > 80dB from 100 kHz - 1GHz", which seems to start much higher. Though looking at it it more closely, that spec makes no sense. It probably should say 15 kHz - 100 kHz for 40 dB, unless it's somehow worse at filtering between 150 and 100 MHz than before and after.
The power conditioner Furman ELITE-15 PF I for instance says ">40 dB from 10Khz. - 100 kHz, >80 dB from 100 Khz. - 1GHz."

I was thinking of the 150 kHz spec when I mentioned "higher frequencies", but that looks funny to me now.

To follow up, Furman got back to me with this about the PST-8:

That would be a tYpO.

And I'm too sure where those specs came from, but new website, new problems.


http://www.furmanpower.com/furman-technologies/linear-filtration-technology


Same filtration as the ELITE i Series:


>40 dB from 10Khz. - 100 kHz.
>80 dB from 100 Khz. _ 1GHz.
(Linear attenuation curve from 0.05 _ 100 ohms line impedance)

 

[iFi audio]

Bought 3, let's see/hear!

Please feel free to let us know how was it!

 

[JootecFromMars]

Dear @iFi audio HQ'd in the UK. Why is there no UK version? And would a Euro version plugged in to a Euro to UK socket adapter work as an alternative? Thanks.

 

[iFi audio]

Dear @iFi audio HQ'd in the UK. Why is there no UK version? And would a Euro version plugged in to a Euro to UK socket adapter work as an alternative? Thanks.

1. We have been unable to locate UK plugs in the round type for the AC iPurifier barrel.
2. Yes! An adapter will do the job.

 

[JootecFromMars]

1. We have been unable to locate UK plugs in the round type for the AC iPurifier barrel.
2. Yes! An adapter will do the job.

Thanks for your answer. But why not embrace the difference and go triangular or square for the uk version? I believe there is already a difference in diameter between the US and Euro versions anyway.

 

[iFi audio]

Thanks for your answer. But why not embrace the difference and go triangular or square for the uk version? I believe there is already a difference in diameter between the US and Euro versions anyway.

The circuitry can't be changed. We'd have to redesign everything.

 

[Alcophone]

Some quick unboxing pictures:



Why on earth is that not properly aligned???

 

[thyname]

Some quick unboxing pictures:



Why on earth is that not properly aligned???

So..... what’s he verdict? Any impact?

 

[Alcophone]

So..... what’s he verdict? Any impact?

None that I noticed so far, but I want to test in more places. At least it doesn't seem to hurt the sound.

 

[Alcophone]

In my two-channel system I'm actually noticing improvements. For instance, in Deftones' My Own Summer (24/96 FLAC) the cymbals starting at 0:31 sound more like cymbals and less like digital hash with the iPurifier. But what makes me really happy is that the imaging is improved significantly (more focused, precise) in all songs that I have tried (especially Nils Lofgren's Keith Don't Go (16/44 FLAC), Nathaniel Ratecliff's Oil & Lavender (24/88) and Alexis Cole's Whippoorwill (24/192)). It's still not close to an electrostatic system I heard last year, but noticeably closer than before. I went back and forth quite a bit with the same songs and really hope I'm not imagining it. I first put it into the socket closest to the power cord, which then feeds the subwoofer, followed by the power amp. That's when I noticed it first, and it seemed a bit better still when I put it between the subwoofer's plug and the power amp's plug, but the difference to the other position was slight, if any.

At work with Jotunheim/Ether C Flow I didn't notice any changes.

 

[iFi audio]

AC iPurifier
Part 4/5: Where to deploy.

The AC iPurifier works by taking out noise across the frequency range. In terms of effectiveness, it typically reduces noise by up to 100x or 40dB (and sometimes more).

The following diagram shows the placement of three AC iPurifiers in one system.

• The first AC iPurifier (1) is best located in-between the two types of power supplies. For example we recommend that all linear power supplies are located after the second AC iPurifier but before the third. All SMPS power supplies should then be located after the third AC iPurifier.

• A second AC iPurifier (2) should then be situated at the first entry point of the wall mains into the extension block.

• A third AC iPurifier (3) is best inserted into the shared mains wall outlet that supplies the downstream audio system.

By connecting this way, all the respective noise is ‘contained’ and terminated in its immediate vicinity. Also, the digital and analogue power sources should be in their respective groups as shown in the above diagram.

 

[thyname]

AC iPurifier
Part 4/5: Where to deploy.

The AC iPurifier works by taking out noise across the frequency range. In terms of effectiveness, it typically reduces noise by up to 100x or 40dB (and sometimes more).

The following diagram shows the placement of three AC iPurifiers in one system.

• The first AC iPurifier (1) is best inserted into the shared mains wall outlet that supplies the downstream audio system.

• A second AC iPurifier (2) should then be situated at the first entry point of the wall mains into the extension block.

• A third AC iPurifier (3) is then best located in-between the two types of power supplies. For example we recommend that all linear power supplies are located after the second AC iPurifier but before the third. All SMPS power supplies should then be located after the third AC iPurifier.

By connecting this way, all the respective noise is ‘contained’ and terminated in its immediate vicinity. Also, the digital and analogue power sources should be in their respective groups as shown in the above diagram.

That’s not what the picture says. Look at the numbers

 

[iFi audio]

That’s not what the picture says. Look at the numbers

Yup, you're right. Pic's good though, our description was slightly off. In any case, now it's good.

 

[Matias]

Yup, you're right. Pic's good though, our description was slightly off. In any case, now it's good.

Then your website and Amazon ad must be updated as well since the pictures there are also reversed 1 and 3.