DC iPurifier2
iFi audio DC iPurifier2

Is underlying system noise polluting your enjoyment of music?

The iFi audio DC iPurifier2 will reduce interference in your system, often caused by noisy power supplies.

Unwanted noise. Gone.

Your everyday Switch Mode Power Supplies (SMPS)are very noisy. They were never really intended for audio use.

The DC iPurifier2, just like its predecessor, combats unwanted noise coming from SMPS to ensure the pure sound of your audio wins through.

iFi audio DC iPurifier2

Handles anything

Simply place the DC iPurifier2 between the SMPS and the device you want to use.

Your device could be anything from a DAC (digital-to-analogue converter) to a DAW (digital audio workstation).

The DC iPurifier2 will halt unnecessary noise in its tracks.

Take a look at our Noisebusting Tech Note here.

Super effective. Super cool.

It’s an ultra-wide band design that is effective from 1Hz all the way up to 5GHz. Its strongest performance is in the audible range of 20Hz to 20KHz.

The DC iPurifier2 handles five volts right through to 24, and comes with a variety of adapter sizes making it compatible with all power supplies – 5.5 x 2.1mm, 5 x 2.5mm, and 3.5 x 1.35mm.

iFi audio DC iPurifier2

So, what’s new?

The DC iPurifier2 uses iFi’s optimised Active Noise Cancelation2 technology based on the ingenious Thales Spectra military radar defence technology used in jet fighters.

In the immortal words of Maverick from Top Gun, “Maverick going supersonic. Be there in 30 seconds!”

The devil is in the detail

Only top notch components are used in our tech. The details speak for themselves.

Adding the DC iPurifier2 into your system will not only reduce background noise, it will bring out more definition, detail and warmth in your music.

‘The Danger Zone’ by Kenny Loggins will never have sounded so clear.

Switch Mode Power Supplies (SMPS)

A switched-mode power supply is an electronic power supply that incorporates a switching regulator to convert electrical power efficiently. It transfers power from a DC or AC source to DC loads, such as a personal computer, while converting voltage and current characteristics.

Switch-mode power supplies are widely used because of the advantages they offer in terms of size, weight, cost, efficiency and overall performance. They are in themselves noisy and were not designed with audio in mind.

DAC (Digital-to-Analogue Converter)

DACs convert digital information, stored or streamed by computers, into music we can hear through speakers or headphones.

Every device that’s a source of digital sound has a built-in DAC (TVs, games consoles, CD players, phones, portable music players etc). Dedicated external DACs sound much better than standard DACs used in digital devices such as phones.

DAW (Digital Audio Workstation)

A digital audio workstation (DAW) is an electronic device or application used for recording, editing and producing audio files. It’s basically a mixing desk.

Active Noise Cancellation

Active Noise Cancellation (ANC) reduces unwanted sound by the addition of a second sound wave specifically designed to cancel out the first. This basically results in no sound at all as it reaches unwanted sound even at the lowest frequencies.

Passive noise cancellation is done by means of insulating filters and works best on the middle to high frequencies. It does not work on the lower frequencies meaning that some sound can still be heard.

Polarity

In simple terms, polarity refers to the way a signal flows.

Audio signals generally flow one way, like DC current, and have positive polarity. Inverting the polarity can have a negative impact on sound and equipment.

EMI (Electromagnetic Interference)

EMI is a type of interference caused by errant and unwanted electromagnetic waves that are received and amplified by an audio system. They cause some of the annoying ‘audio gremlins’ we often talk about.

Pulse Load

A ‘load’ refers to a current drain that is applied to a battery. For example, charging the flash in a camera. The term ‘Pulse Load’ indicates that the load is automatically applied for a specific period of time, then disconnected without user intervention.

Based on military tech, our improved Active Noise Cancellation II®  actively cancels all incoming noise.

It does this in a similar way to active noise-cancelling headphones – it generates a signal identical to that of the incoming electrical noise but in the opposite phase, actively cancelling it out. This is highly effective at removing low- and mid-frequency noise, while passive insulating filters deal with higher frequency interference. This combination is measurably more effective at eradicating noise corrupting the USB signal than devices relying solely on passive filtering.

iFi audio DC iPurifier2

The unit comes with different types of DC barrel connectors.

It works with 5.5 x 2.1mm but also ships with adapters for 5.5 × 2.5mm and 3.5 × 1.35mm.

Vishay MELF resistors – complex, costly but superior.

These metal electrode leadless face resistors have excellent accuracy, stability, reliability, and pulse load capability. They provide optimal power rating and pulse load capability. They show some of the lowest noise and distortion of any resistor available in the market, period.

This excellent copper-alloy EMI shielding isolates devices and cables to block radio frequency electromagnetic radiation.

A plethora of top-notch components – high-precision MELF resistors, Panasonic SP-Cap polymer aluminium capacitors, custom operational amps plus copper-alloy shielding.

It is a ground-up, ultra-wide bandwidth design.

It is effective from 1Hz all the way up to 5GHz.. Crucially the strongest performance is in the audible range of 20Hz to 20KHz.

This device has a built-in reverse polarity warning.

The red protection LED will be lit if the input polarity is reversed. You can be sure your system is safe!

One small device, many, many applications – noise reduction for 5v -24v SMPS.

Just add between the SMPS and the device, for example, a router, DAC, set-top box, media streamer, laptop or desk mixer.

Noise will be reduced by a factor of 316x to 100,000x.

Retailer

Engulf Audio

Alabama
Retailer

AudioVision S.F.

California
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Alma Music and Audio

California
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Sonic Culture

California
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Berkeley Stereo

California
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Guitar Center

California
Distributor

iFi audio USA (West Coast)

California
Retailer

Apos Inc.

California
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Crescendo Fine Audio

Colorado
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The Audio Alternative

Colorado
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Don Walker Audio

Colorado
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Listen Up

Colorado
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Listen Up

Colorado
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Listen Up

Colorado
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Laufer Teknik

Connecticut
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Upstream Audio

Florida
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Audio Surroundings

Florida
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HiFi Buys

Georgia
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Music Direct

Illinois
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Roberts Camera

Indiana
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The Listening Room

Maryland
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Gramophone

Maryland
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Audio Advisor

Michigan
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Stereoland, Inc

Minnesota
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MountRose Music

Nevada
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Care Audio

New Jersey
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High Definition Tape Transfers

New Jersey
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Dennis Hartwick

New Jersey
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Bloom Audio

New Jersey
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Listen Up

New Mexico
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Signature Sound

New York
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Sensorium AVR

New York
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Audio 46

New York
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Turntable Lab NY Storefront

New York
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Jeffers Audio

North Carolina
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Liquid HiFi

North Carolina
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AudioAdvice

North Carolina
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AudioAdvice

North Carolina
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Headphones.com

Oregon
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True Audiophile

Oregon
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Oswalds Mill Audio

Pennsylvania
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Now Listen Here

Pennsylvania
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HIDEF Lifestyle

Pennsylvania
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Music & Sound

South Dakota
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Elevation Sight and Sound

Utah
Distributor

iFi audio USA (East Coast)

Virginia
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Sound Approach

Virginia
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Audio Video Concepts and Design

Washington
Retailer

Kitsune HiFi

Washington
Compatibility5-24 volt DC power supply units (up to 3.5A, 84W)
ConstructioniFi ‘FINAL’ aircraft-grade RFI shielded aluminium chassis
DC barrel versions5.5×2.1mm (adapters for 5.5×2.5mm and 3.5×1.35mm included)
Polarity inverter (white)
Warranty period12 months
iPower2iPowerDC iPurifier2
Primary useUpgrade any noisy SMPSUpgrade any noisy SMPSIn-line upgrade of linear/SMPS power supply
InputYesYes-
Output5V/2.5A; 9V/2.0A; 12V/1.8A; 15V/1.2A
5.5×2.1mm input/5.5×2.5mm output (‘C’ black)
5.5×2.1mm input/4.8×1.7mm output (‘F’ black)
5.5×2.1mm input/4.0×1.7mm output (‘G’ black)
5.5×2.1mm input/3.5×1.35mm output (‘H’ black)
5.5×2.1mm input / 5.5×2.5mm outputReverse — Polarity Plug (‘C’ white)
USB C Adapter
USB Micro Adapter
5V/2.5A; 9V/2.0A; 12V/1.8A; 15V/1.2A
5.5×2.1mm input/5.5×2.5mm output (‘C’ black)
5.5×2.1mm input/4.8×1.7mm output (‘F’ black)
5.5×2.1mm input/4.0×1.7mm output (‘G’ black)
5.5×2.1mm input/3.5×1.35mm output (‘H’ black)
5.5×2.1mm right-angled extension cable
5.5×2.1mm input / 5.5×2.5mm output — Reverse Polarity Plug (‘C’ white)
-
5v version onlyDC > micro USB cable (for Raspberry Pi or similar micro
computers)
DC > micro USB cable (for Raspberry Pi or similar micro
computers)
-
Compatible with--5-24v DC (up to 3.5A, 84W)
Input/Output--5.5 x 2.1mm
(adapters for 5.5×2.5mm and 3.5×3.5×1.35mm
included)
Active Noise Cancellation-Yes-
Active Noise Cancellation IIYes-Yes
Noise~1uV1uV-
Noise reduction--Up to 100,000x
Total length82 x 43 x 43mm
82x43x40mm
Weight165g | 1.2lbs (with cable)155g (with cable)

Good for value

Make noise floor lower dramatically, love it

Amazon

(Click name to read original review)

This makes devices costing hundreds sound like they cost thousands!

Cleaned up the DC power to a Silent Angel Ethernet switch driving my Roku Ultra tv box. I was expecting only subtle improvement at best but got more than that. Movie scenes now sound more like I’m there and less like a recording. I have a second iPurifier2 I will use on the Roku when I find adapter plugs that fit it; the included adapters do not.

Amazon

(Click name to read original review)

Beneficial for iFi Zen

Purchased a iFi Zen for Bluetooth streaming and although pleased with the sound it was, at times, lacking in body and tone. I then purchased an iPurifier2 Active Audio Noise Filter and WOW! what a big improvement to sound quality. Recommended.

Amazon

(Click name to read original review)

Useful Device

Very handy little filter. I have two of these now, one external DC supplies for a Raspberry Pi and W4S reclocker.

The improvements are obvious and immediate, noise is a killer in any system.

Amazon

(Click name to read original review)

POWER OF CHANGE – IFI ITUBE2 // IPOWER // DC IPURIFIER 2 – REVIEW

iFi iTube2 is a Tube PRE-AMP designed for large home systems, while iPower is a power converter that comes in handy if your source doesn’t come with a quality power brick, or if you need a replacement power brick.

There will also be a bonus product features in this review, the DC iPurifier 2. Since I have no comparisons for any of those products, I’ll try comparing them with other options out there throughout the review, but there will be no special comparison section within the review…

Audiophile-Heaven

(Click name to read original review)

Good product, worth to buy.

Using for a network media player, with noticeable improvement in video and audio.
And the device with great finishing.

Amazon

(Click name to read original review)

Excellent power filtering

Excellent product – does exactly what it says and effectively turns any switching power supply into an iFi regulated power supply. Useful for when a device has power requirements not met by the standard iFi power supplies eg Pro-Ject audio S2 stream box ultra and Tube Box S2. Obviously, if you think power supply regulation makes no difference, then you will not be interested in this product!

However, if you have enough common sense to understand that a clean DC power supply is essential for audio products, then this is a solution and less expensive than buying dedicated linear power supplies (usually in excess of £300). Given the range of voltage/amps this product can handle, it’s a very useful device. I have found that the adapters fit all Pro-Ject audio devices.

Amazon

(Click name to read original review)

Reduces power adapter noise

I’m using this on my Tivo Bolt which comes with a 12volt ac/dc adapter commonly called a wallwort. These are miniature switching supplies which work well enough, but all switching supplies add noise to the output. This device is installed after the adapter and plugs into the Tivo. Voltage doesn’t matter, it’s a noise reducer.

It reduced the electrical noise and results in a better picture from the Tivo. It’s not an earthshaking improvement like a linear supply such as an Sbooster(but those are $300-$400) would be , but well worth the money. Recommended

Amazon

(Click name to read original review)

I like the purified sound

Great product

Amazon

(Click name to read original review)

Overview of iFi Audio accessories and filters – does filtering matter?

This article was born in my head a long time ago, mainly due to repeated questions from time to time, whether I had contact with filtering devices like iSilencer, Jitterbug etc. But since I run my humble blog, I’ve probably got used to most people to a few maxims, which I am guided in total not only in the field of audio equipment, but generally in life…

AUDIOFANATYK

(Click name to read original review)

Reduced what little noise I had left in my hifi system.

Works very well and feels well made. Used for one on my raspberry pi player and another for my smsl m8a.

Amazon

(Click name to read original review)

Small but mighty

This product has been such a surprise, who would have thought such a small device can make so much difference. BIG improvement in my music, the sound is clearer plus now there is no unwanted excess noise. I’m happy with the outcome.

Amazon Customer

(Click name to read original review)

Inexpensive way to upgrade power supply

This has been somewhat of a revelation. I believe in the importance of power supplies but good ones can be pricey. I have been using this on my reclockers in my main hifi system, my desktop pc system and even in my car. It makes a nice difference, cleaner and fuller, so it goes with me wherever I go. A nice improvement for a reasonable price.

Amazon User

(Click name to read original review)

A great improvement for a limited amount of cash

Like so much in the world of audio, YMMV. That said, these really work for my system (modified Naim amplification and Impulse Td712 single-driver speakers … so a system with not so much bass depth, but lots of pace and drive. I already use extensive power conditioning and IMHO stupidly expensive mains cables, but even after all that these still make a very clear improvement revealing significant levels of detail, air and ambience but without adversely impacting the timing, weight and drive of the system. Recommended ?

Amazon customer

(Click name to read original review)

DC iPurifier 2 Review

What I have noticed was an overall sound gain in sharpness from low frequency’s to the high’s without compromising any musicality or having a degradation effect that some man in the middle accessories could bring.

I already have a pretty big investment for cleaning the electricity of my desktop audio, so the result of the DC iPurifier was a surprise to me that I was not expecting.

Applesnowleo

(Click name to read original review)

DC iPurifier 2 Review

What I have noticed was an overall sound gain in sharpness from low frequency’s to the high’s without compromising any musicality or having a degradation effect that some man in the middle accessories could bring.

applesnowleo

(Click name to read original review)