[Alcophone]

Sadly, it's too big to only occupy one socket on my power strip. Bit of a design flaw.

 

[iFi audio]

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

Duly noted, thanks.

 

[Mediahound]

Sadly, it's too big to only occupy one socket on my power strip. Bit of a design flaw.

Try one of these: http://amzn.to/2FaZ7yD

Many many AC adapters themselves take up more than one socket on a power strip. Would you say that all of those have a design flaw?

 

[Alcophone]

Try one of these: http://amzn.to/2FaZ7yD

Many many AC adapters themselves take up more than one socket on a power strip. Would you say that all of those have a design flaw?

Wrong orientation, but I get your drift (I have some of those, very useful for wallwarts indeed). If I design a device that I intend people to insert multiple of into the same power strip, it better be slim enough to not take away more slots than necessary. But they didn't even bother to make sure the front has the same orientation as the plugs in the back, so I'm expecting too much, clearly.
Still, I'm grateful for the improved imaging, but this clearly could have used some field testing with customers.
Main reason I mention it, though, is so people who are interested in it can take it into account (maybe they also need a bigger power strip, or an extension cord like you mention), not to offend you.

 

[wakka992]

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.

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

sorry guys, you said you've edited but I'm really not following pics with description...
You say "All SMPS power supplies should then be located after the third AC iPurifier"... but the 3rd on the pics is on the wall...

Also I'd like to ask two specific question:
- in case the only SMPS in my system is your low noise iPower 5V, do I still have to use 2 iPurifier AC on the same power strip to separate SMPS from LPS (on in the first socket and one between SMPS/LPS) or if only one iPurifier AC in the first socket of the power strip is enough?
- since you specifically say to put this iPower AC on the FIRST socket of the power strip, is it right to assume that this product won't work as expected on a star-wired power strip? (i.e. it will work at it's best with a standard wired power strip, where the first power and swiching modules is connected to the second, the second to the third etc...?).

Thanks for your input!

 

[iFi audio]

sorry guys, you said you've edited but I'm really not following pics with description...
You say "All SMPS power supplies should then be located after the third AC iPurifier"... but the 3rd on the pics is on the wall...

Our bad. It should be: "All SMPS power supplies should then be located after the first AC iPurifier"

We'll address your questions shortly.

 

[wakka992]

Our bad. It should be: "All SMPS power supplies should then be located after the first AC iPurifier"

We'll address your questions shortly.

Thank for the reply iFi Audio.

So your 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." should be rephrased in "we recommend that all linear power supplies are located after the second AC iPurifier but before the first. All SMPS power supplies should then be located after the first AC iPurifier."
Following your pics it should be SMPS in the "analogue equipment" section and LPS in the "digital equipment" one, isn't it?

Thanks as always!

 

[Mediahound]

"we recommend that all linear power supplies are located after the second AC iPurifier but before the first."

How is that even possible?

I received one today and to me it sounds best in the AC wall outlet, at least for my system.

 

[iFi audio]

How is that even possible?

Please take a look at the picture in one of our recent post. What is unclear to you?

I received one today and to me it sounds best in the AC wall outlet, at least for my system.

And that's very good. If it works for you in such a configureation, great!

 

[littlexx26]

i have bought total 4 ac purifiers today. i can tell it does make difference (even only one used), both analogue and digital devices. clarity is now up to another level. i already have 2 industrial filters in use and this ac purifier still can make further improvement.

 

[iFi audio]

i have bought total 4 ac purifiers today. i can tell it does make difference (even only one used), both analogue and digital devices. clarity is now up to another level. i already have 2 industrial filters in use and this ac purifier still can make further improvement.

That's good to hear!

 

[goodvibes]

I'm sure it actually cleans up the power, (i.e. removes high frequency components in the voltage waveform above 60hz) but whether there is any audible benefit to cleaner power in your system is questionable. Considering that most equipment actually converts to DC before the mains power enters any audio gear, you have to wonder. And of course it will always depend on the equipment and how it's designed. Since all competent audio engineers are aware that mains power is noisy, presumably they take effective steps to avoid introducing this type of interference to the audio signal. So my guess is that unless your amp is garbage to begin with, this won't help. And it's extremely doubtful it would flip a single bit on the output of a DAC... I'm not an expert on this subject, though. Anyone know of any tests done on this type of gear in the past?

It will depend on the system and power supply used. Switching supplies often dirty the mains in a way the linear supplies can't always clear up. Best to have linear supplies on everything including the digital kit. IMO. There is no need to separate analog from digital kit if all use linear supplies. They are (correctly) assuming switching power supplies in digital kit which is most often the case at moderate price points. In my experience, this sort of capacitive bandwidth limiting, which is how you parallel filter, usually makes good analog kit sound less snappy but could be an overall plus for systems with less good linear supplies, TVs and other switching supplies in them. I personally would prefer a few turns around ferrite on the power leads in front of switching supplies and to leave the linear portion untouched. When the switching supply is on a wall wart, seperate them on a power strip or extension cord and put the ferrite ring on that. Doesn't mean I'm right but I'm personally not a fan of the capacitor method but this may be a bit unfair as I'm used to better home kit that pays great attention to their own linear power supplies that don't use additional filtering before the transformer.

 

[iFi audio]

It will depend on the system and power supply used. Switching supplies often dirty the mains in a way the linear supplies can't always clear up. Best to have linear supplies on everything including the digital kit. IMO. There is no need to separate analog from digital kit if all use linear supplies. They are (correctly) assuming switching power supplies in digital kit which is most often the case at moderate price points. In my experience, this sort of capacitive bandwidth limiting, which is how you parallel filter, usually makes good analog kit sound less snappy but could be an overall plus for systems with less good linear supplies, TVs and other switching supplies in them. I personally would prefer a few turns around ferrite on the power leads in front of switching supplies and to leave the linear portion untouched. When the switching supply is on a wall wart, seperate them on a power strip or extension cord and put the ferrite ring on that. Doesn't mean I'm right but I'm personally not a fan of the capacitor method but this may be a bit unfair as I'm used to better home kit that pays great attention to their own linear power supplies that don't use additional filtering before the transformer.

As far as the SMPS vs LPS matter goes, it's more about what one does witch each than anything else.

 

[goodvibes]

As far as the SMPS vs LPS matter goes, it's more about what one does witch each than anything else.

 

[goodvibes]

On a more serious note, I agree and think companies lIke LInn have done a good job with SM though not so much when they started with them. It's also why i used the moderate price qualifier. TVs and PCs are usually quite dirty.