DC iPurifier2
DC iPurifier2

DC iPurifier2

Turn down the noise.

Ifi Audio DC iPurifier2
Punk, rock, pop, classical or grime. Whatever your tastes, you deserve a clean music experience.

And the cleanest way to enjoy your favourite genre is with the DC iPurifier2.

Make it clear.

Listening to music on your home system should be perfect, but chances are it isn’t, and that’s because of hiss and distortion created by your power sockets, plugs, and other electronic devices.

The DC iPurifier2 puts a barrier between them.

It strips away noise and restores clear sound.

iFi audio DC iPurifier2

Adapted to change.

The DC iPurifier2 handles 5 volts right through to 24, and comes in the following adapter sizes:

  • 5 x 2.1mm
  • 5 x 2.5mm 
  • 5 x 1.35mm

It’s compatible with all power supplies.

A quest for quiet.

The DC iPurifier2 leaves no stone unturned in its quest to reduce noise, buzz and jitter from your music.

Listen to what you love in complete tranquillity.

iFi audio DC iPurifier2

The tech spec.

The DC iPurifier2 has taken a step into the next generation with:

  • Active Noise Cancellation2® That sharply reduce noise and bring recordings to the fore
  • Panasonic SP-Cap Polymer Capacitors Further minimises noise and keeps your device temperature stable

Finding a smoother, cooler audio experience is next to impossible.

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.

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

By generating a signal identical to the noise signal but in the exact opposite phase, our Active Noise Cancellation2® (ANC2) actively cancels all incoming noise.

Reverse polarity warning.

The red protection LED will be lit if the input polarity is reversed.

A ground-up, ultra-wide band design.

Effective from 1Hz all the way up to 5GHz.

Crucially the strongest performance is in the audible range of 20Hz to 20KHz.

Different types of DC barrel connectors.

The DC iPurifier2 works with 5.5 x 2.1mm but also ships with adapters for 5.5 × 2.5mm and 3.5 × 1.35mm.


  • Compatible with 5-24 volt DC power supply units (up to 3.5A, 84W)
  • Construction: iFi ‘FINAL’ aircraft-grade RFI shielded aluminium chassis
  • With 3 DC barrel versions: 5.5×2.1mm (adapters for 5.5×2.5mm and 3.5×1.35mm included)
  • With polarity inverter (white)
  • Warranty period: 12 months

Tech notes:

We’re working on it — check back soon!


We’re working on it — check back soon!


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

(Click name to read original review)
More reviews…
More reviews…

I like the purified sound

Great product

(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…

(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.

(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.

(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.
(Click name to read original review)


iPOWER DC iPurifier2
Primary use Upgrade any noisy SMPS In-line upgrade of linear/SMPS power supply
Input Yes -
Output 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 only DC > micro USB cable (for Raspberry Pi or similar micro
Compatible with 5-24v DC (up to 3.5A, 84W)
Input/Output 5.5 x 2.1mm
(adapters for 5.5x2.5mm and 3.5x3.5x1.35mm
Active Noise Cancellation Yes -
Active Noise Cancellation2 - Yes
Noise 1uV -
Noise reduction - Up to 100,000x
Total length 82x43x40mm 82x43x40mm
Weight 155g (with cable) 155g (with cable)