iFi Audio AC iPurifier Active Noise Filter

Item code: AC iPurifier

4.8 18 reviews ✓ Verified
The AC iPurifier is the latest iFi product from the ‘power products’ stable to clean-up noisy mains supplies. It is no ordinary mains purification product. Technologically advanced, it’s an active not a passive product so it goes above and beyond and…
£129.00
£107.50
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SPEAKER CABLES:

A quantity of 2 means you will receive a pair of speaker cables e.g. for your front left and front right speakers. By entering a quantity of 1, you will get a cable for a single speaker e.g. centre speaker and this option also enables you to vary the length (and termination) of your cable for each speaker.

OTHER CABLES:

A quantity of 1 means you will receive a single cable in the case of aerial, satellite, subwoofer, digital coaxial & optical cables and a pair of cables in the case of 2 rca to 2 rca analogue audio cables.

NON-CABLE PRODUCTS:

A quantity of 1 means you will receive 1 of the specified products.

£107.50 ex. VAT
Available — built to order, dispatches in 24 hours
Delivery: Royal Mail Tracked 24 FREE  ·  DPD Next Day from £8.95  ·  DPD Saturday from £12.95
Order before 4pm (Mon–Fri) for same-day dispatch
Our promise: 30-day returns · Free burn-in · Built in our UK workshop · 12 Months warranty · Expert support on every order

iFi Audio AC iPurifier Active Noise Filter

PLEASE NOTE: For UK customers, this item is shipped with an adapter for use with UK 3 pin sockets.

The mains power supply is the ‘gasoline’ that fuels an audio system. And, whether it is clean or contaminated, it has a material impact upon the quality/enjoyment of playback.

The AC iPurifier is the latest iFi product from the ‘power products’ stable to clean-up noisy mains supplies.

It is no ordinary mains purification product. Technologically advanced, it’s an active not a passive product so it goes above and beyond and cancels far more noise across the frequency range than other passive devices.

This chart compares the AC iPurifier (green line), which is ACTIVE, versus generic mains filters (red line) which are typically passive.

iFi Audio AC iPurifer Filtration Graph

The effective noise reduction difference is as different as night and day.

  • MUCH better at -40dB
  • Effective across the frequency range. A passive purifier filters only in the very top-end of the frequency range.

Every audio system benefits

The AC iPurifier was designed to be used in ANY mains powered audio system. It is particularly effective at dealing with modern audio systems that have an abundance of generic and varied power supplies (see next section for a more detailed, technical explanation).

Where extension blocks are used, the AC iPurifier can be used to isolate certain types of power supplies for the maximum noise reduction.

 

Features

  • Active Noise Cancellation (ANC) - Military technology, most advanced noise-cancellation available.
  • Wireless Purification System - Complex circuit that significantly reduces power-line noise without audible or visible side-effects.
  • Ground/Earth connection diagnostic - Detection of missing Ground/Earth.
  • Polarity connection diagnostic - Detection of polarity fault.
  • Audio Earth connection - This adds a solid Ground/Earth with ground-loop prevention circuit built-in.
  • Overvoltage Surge Protection - Auto-recovery.
 

Latest purification product to benefit from ANC technology

Since developing Active Noise Cancellation (ANC) in-house, we have utilized it in all the relevant products from the iPower all the way up to the micro iUSB3.0.

The AC iPurifier is the latest product to have onboard ANC. As its name suggests, it ACTIVELY cancels the noise which makes it one of the power accessories, if not the only one, that actively cancels noise.

Wireless Purification System

The Wireless Purification System (WPS) is a complex circuit that reduces power line noise without audible or measured side-effects. This is important because such solutions, while attempting to curb noise, also hamper dynamics. This is not the case with the AC iPurifier.

Modular design to supress noise

With many modern audio systems, there are typically a plethora of mains plugs. All of these add their own unwanted noise issues and pollute the local mains supply.

The design of the AC iPurifier is such that it is even more effective if several are used to ‘contain’ the same type of noisy sources.

You can insert into the AC mains wall outlet that supplies the audio system OR insert into the mains extension block for the audio system. Try both locations to discover which has the greatest impact on improved sonics.

iFi Audio AC iPurifier ideal placement

Intelligent Ground connection

There are more than a few AC clean-up devices that add an extra Ground/Earth but only the AC iPurifier has ‘Intelligent Ground’. You can buy the optional extra 4mm ground cable to give the audio system the best possible Ground/Earth but it will ONLY actively provide a Ground/Earth (if it detects the lack of one*. It will not create a ground loop).

‘Smart Polarity and Earth’ detection

When it comes to mains AC, there are two common errors which people can make when setting up a system. The first has to do with polarity and the incorrect orientation of USA and EU type mains pins.

Intelligent Polarity automatically informs you of incorrect orientation by changing to a red LED.

The second error is the a lack of a Ground/Earth.

In a system where there may or may not be a lack of a Ground/Earth, simply insert the AC iPurifier into the system and it will tell you one way or the other.

When the two LEDs (below) light up green everything is in order!

iFi Audio AC iPurifier LED Tests

Overvoltage Surge Protection

Last but not least, for the rare instances where there is an overvoltage spike (from a mains electricity surge or lightning strike for example), the AC iPurifier will automatically shut off and stop electricity from passing through your system. This should protect your valuable and highly-sensitive mains equipment from harm.

 

Specification

  • Noise reduction: > 40dB (> 100x)
  • Surge Protection: max. 30,000A @ 1,000V/10uS
  • Operating Voltage: 90V – 265V
  • Size/Weight: (USA): ø 40mm x 105mm (L) 108 (g) / 0.24 (lbs)
  • Size/Weight: (EU): ø 40mm x 115mm (L) 126 (g) / 0.28 (lbs)
  • Warranty period: 12months

 

About iFi Audio Made in United Kingdom

iFi Audio is an award-winning audio tech company dedicated to enhancing your music enjoyment. With a mission to improve sound quality and eliminate noise, distortion, and hiss, iFi Audio offers a wide range of products that cater to headphones, speakers, portable audio devices, phones, and TVs. By doing so, they aim to deliver studio-quality audio that allows you to experience music as the artists intended.

Since its establishment in 2012, iFi Audio has been driven by the love of music and a commitment to making a difference in people's lives. With over 50 meticulously designed and manufactured products, they ensure every detail meets their high standards. Sourcing parts from around the world, including Germany, the USA, and Japan, they bring together global expertise to create exceptional audio devices.

At the heart of iFi Audio's business are its customers. They prioritise delivering the highest quality audio wherever you are, whether in the comfort of your home or on the go. Their distribution centre in the USA serves renowned retailers such as B&H and etailz, expanding their global network and reaching more music enthusiasts.

iFi Audio takes pride in its eco-friendly practices, using recyclable materials like aluminium, paper, and recycled plastics for its products and packaging. They strictly adhere to environmental standards, ensuring their components are hazardous toxins-free.

With a focus on Class A analogue circuitry and maintaining the audio signal's integrity, iFi Audio's products offer exceptional performance without compromising environmental sustainability. They believe that how a product looks, performs, and impacts the environment all matter, and they strive to deliver audio solutions that meet these criteria.

Experience the difference of high-quality audio with iFi Audio and immerse yourself in the joy of music.

 

About iFi Audio

British-heritage maker of DACs, headphone amplifiers and streamers, from pocket dongles to home systems.

iFi audio is the sister brand of Abbingdon Music Research, which is headquartered in Southport, UK. The catalogue covers home audio, with DACs, amplifiers, DAC and amplifier combinations and streamers, and portable audio, including Bluetooth and USB-C dongle DACs. It also makes digital and audio cables, adapters and an Elite Audio range.

Read more about iFi Show less

Home audio lines with clear names

The ZEN series includes the ZEN Air DAC, ZEN DAC, ZEN CAN, ZEN Phono and ZEN Stream. The iDSD series includes the Valkyrie, Phantom and Diablo, and the NEO range includes the NEO iDSD and NEO Stream. The iCAN Phantom and the Hip-dac sit alongside them.

Portable products for your phone or laptop

The GO series covers the GO pod, GO link, GO bar and GO blu, which are small units for phones and laptops. Larger portable models include the xDSD Gryphon. Bluetooth and USB-C versions mean you can choose the connection that matches the device you already own.

Cables and adapters complete the catalogue

iFi lists digital cables, audio cables and adapters in its accessories range, including the GO cable. These are the parts that link an iFi unit to the rest of your system, so you can pick up the right lead from the same brand when you buy the DAC or amplifier.

Why we stock iFi

iFi solve specific problems rather than selling you a whole system. Noise on a USB feed, a laptop that cannot drive your headphones properly, hum from a ground loop. Each unit does one job well at a price that does not require a long think, which is why they turn up in so many systems.

Shop all iFi Audio →

Specification

  • Noise reduction: > 40dB (> 100x)
  • Surge Protection: max. 30,000A @ 1,000V/10uS
  • Operating Voltage: 90V – 265V
  • Size/Weight: (USA): ø 40mm x 105mm (L) 108 (g) / 0.24 (lbs)
  • Size/Weight: (EU): ø 40mm x 115mm (L) 126 (g) / 0.28 (lbs)
  • Warranty period: 12months

We use Royal Mail 1st Class services for our Standard Delivery.

Orders received before 4.30 pm Monday to Friday are usually dispatched the same day by FIRST CLASS post (unless premium postal or timed courier services are selected), subject to stock availability. This does not apply to custom-length cables and speaker cables as these require a longer timescale to terminate. This also excludes all cables selected for the burn-in service. Please note, we do not process orders on national holidays in the UK. Over 98% of our orders are delivered the next working day including Saturdays.

 

Standard delivery is usually within 2 working days, although 98% of all orders are delivered the next working day including Saturdays. In extreme cases, such as delivery to the Highlands and Islands, this may take 3 days.

 

All items are fully insured and come with an invoice from Future Shop. We use the Royal Mail for delivery of small packages and DPD Local or DHL for items that weigh over 2KG. Items over 2KG are fully insured and will usually be delivered within 48 hours of placing your order subject to stock availability. For international orders, we use FedEx or DHL services where customers have selected this option.

 

 

Please note, special orders for non-standard cable lengths may be subject to longer deliver time-scales. This may vary from manufacturer to manufacturer.

 

We offer 'Free delivery on orders over £99' subject to the following terms & conditions:

  • Applies only to orders with £99 or more of items (including VAT at the UK rate), at Future Shop
  • Free Delivery on orders over £99 utilises Royal Mail First Class postal service for items weighing under 2KG. For items weighing over 2KG, we use DPD or DHL next working day services which deliver from 9.00am to 6pm within mainland UK (excludes Royal Mail Special Delivery Services and timed next day delivery services by DPD or DHL).
  • Applies only to deliveries to addresses within mainland UK and Northern Ireland addresses. Applies only to orders that are to be delivered to a single Mainland UK delivery address.
  • You will not be eligible for free delivery on your order if any items are cancelled or returned for a refund, bringing the total order amount below £99. Where items are returned, the refund due will be the cost of the item less any postage costs.
  • We reserve the right to change or discontinue 'Free delivery on orders over £99 promotion at any time.
  • FREE DELIVERY FOR ORDERS OVER £99 OFFER DOES NOT APPLY TO TRADE CUSTOMERS.

 

UK Postal & Delivery Charges - FIRST CLASS

Free UK delivery on all orders over £99*

Weight Price (FIRST CLASS UK POSTAGE)
0g - 1000g £3.95
1000g - 1400g £4.95
1400g - 1800g £5.95
1800g - 2000g £6.95
2000g - 3000g £8.95


* Free Delivery on orders over £99 utilises Royal Mail First Class postal service for items weighing under 2KG. For items weighing over 2KG, we use DPD or DHL next working day services which deliver from 9.00am to 6pm within mainland UK.

Free Delivery for orders over £99 excludes Royal Mail Special Delivery Services and timed next day delivery services by DPD or DHL.

 

Special Delivery UK - Guaranteed Next Working Day

We have 99.9% of the UK covered With Royal Mail Next Day Special Delivery. We guarantee delivery to most UK addresses by 1pm the next working day. This includes Northern Ireland, Jersey and Guernsey. Some places take longer to deliver to but we still guarantee delivery within three working days by 5.30 PM.

 

Please note, Royal Mail Special Delivery for next working day may not be possible where non-standard cable lengths are ordered. If this is the case, the item will be shipped via The Royal Mail Special Delivery service as soon as the cable is custom made.

 

For orders weighing over 2KG, we reserve the right to ship items using Next Day Pre-Noon Courier Services where Royal Mail Special Delivery option has been selected.

 

Channel Islands & Northern Ireland

We accept orders from all Channel Islands including Alderney, Jersey, Guernsey and Sark. Unless you select a premium service, Items weighing under 2KG are delivered using our standard UK delivery option above. For items weighing over 2KG, a surcharge may be applied for all deliveries to the Channel Islands as well as Northern Ireland.

 

European Countries

Deliveries to EU member states are not subject to 20% VAT after December 31st 2020 and therefore the 20% VAT on items is automatically deducted when you log-in, register or proceed to place an order.

 

The customer will be liable for the VAT at the local VAT rate, duty on the import and the brokerage service fee if applicable. This may need to be paid in advance to your local Customs & Excise office or the delivery company before your order can be delivered.

 

We offer the following shipping services:

  • Royal Mail First Class International Airmail Services - Items are usually delivered within 3 to 5 working days
  • Royal Mail Standard International Mail Services - Items are usually delivered within 7-10 working days
  • DHL Express International - Items are usually delivered within 24 to 48 hours. DHL orders must be received by 3:30pm for next day service to most destinations in Europe
  • Federal Express International Priority - Items are usually delivered within 24 to 48 hours. FedEx orders must be received by 3.00pm for next day service to most destinations in Europe
  • Federal Express International Economy - Item are usually delivered within 48 to 72 hours

We reserve the right to change your shipping method without notification if you select a method that we cannot use for your shipment (for instance, we cannot ship via postal services for items over 2 Kg to International destinations). If we need to change your shipping method, we will choose the least expensive shipping method for your order.

 

Worldwide - Excluding UK & Europe

Deliveries outside of the UK are not subject to 20% VAT and so the 20% tax on items is automatically deducted when you log-in, register or proceed to place an order.

 

If applicable, the customer will be liable for the taxes at the local tax rate, duty on the import and the brokerage service fee. This may need to be paid in advance to your local Customs & Excise office or the delivery company before your order can be delivered.

 

We offer the following shipping services:

  • Royal Mail First Class International Airmail Services - Items are usually delivered within 7 to 10 working days
  • Royal Mail Standard International Mail Services - Items are usually delivered within 15 working days
  • DHL Express International - Items are usually delivered within 24 to 48 hours. DHL orders must be received by 3:30pm for next day service to most destinations in Europe
  • Federal Express International Priority - Items are usually delivered within 48 hours. FedEx orders must be received by 3.00pm in order to ship items the same day, subject to stock availability
  • Where the actual weight of the package significantly exceeds the shipping cost charged on orders, we may write to you for an additional shipping charge. For larger orders, items may be shipped in multiple packets at our discretion

We reserve the right to change your shipping method without notification if you select a method that we cannot use for your shipment (for instance, we cannot ship via postal services for items over 2 Kg to International destinations). If we need to change your shipping method, we will choose the least expensive shipping method for your order.

Write Your Own Review

iFi Audio AC iPurifier Active Noise Filter

We are interested in your opinion of this product. let us and other customers know how you feel by filling in the comment field below. Your review will appear in this section within 3 working days.

Please do:

  • - Write 50-300 words for the product
  • - Comment on the products value and effectiveness
  • - Tell us if you like the product, but most importantly explain why you like or dislike it
  • - Mention related products and how this one rates by comparison
4.8
18 reviews
5★
15 (83%)
4★
3 (17%)
3★
0 (0%)
2★
0 (0%)
1★
0 (0%)
AI Review Summary — Generated from 18 Reviews

Customers consistently praise the iFi AC Purifier for delivering noticeable improvements in audio quality, including darker backgrounds, clearer detail, enhanced soundstage separation, and better instrument placement. Many report the device performs surge protection effectively. Most users found it cost-effective and were pleasantly surprised by results, with some recommending multiple units. Service from retailers, particularly FutureShop, received positive feedback. However, opinions diverge on audible impact: while most detected improvements, one reviewer noted no discernible sound difference in their system, though appreciated the mains protection value. A recurring negative theme identified was limited plug version availability for non-EU markets.

Anthony C ✓ Verified Purchase
Can’t go wrong for the money 27 September 2025
Primarily bought for surge protection, but also small incremental sound improvement with the Supra LoRad anniversary (silver plated) mains cable to complete the best combined RFI/EMI noise rejection for a combined price of around £200 via FutureShop.

Well worth it
Mark ✓ Verified Purchase
It appears to have lowered the noise floor. 15 June 2025
It appears to have lowered the noise floor, although it wasn't that bad to begin with. I am unable to be 100% sure because I am partially deaf.

What I can say is that it does seem to be an improvement, with those little, delicate sounds being more apparent. I don't think anyone would be disappointed with this item, but as always, your mileage may vary.
Simon Poynton ✓ Verified Purchase
Improved sound stage 8 May 2025
This is my third iFi AC Purifier Active Noise Filter, and with each one, I've experienced an overall improvement in sound quality. Low, mid and high ranges have all significantly improved, along with greater separation in the overall sound stage.

As a result of my personal experience, I would wholeheartedly recommend this product.
Phil Brown ✓ Verified Purchase
Excellent Product, Excellent Service 13 March 2025
The iFi Audio AC iPurifier Active Noise Filter has really cleaned up the noise on my hifi, particularly noticeable on vinyl playback. I was sceptical about the product but have been wondering about it.

The service from Futureshop was excellent and I will definitely use their services going forward.
Wallace ✓ Verified Purchase
Nice to have item, the background darken, and clearer sound 1 September 2024
I have positive comments on the product, but I am disappointed that there is no US plug version available, which is on discount. I have to buy the EU version and convert it myself.
Egan ✓ Verified Purchase
Money well spent 26 June 2024
It was really a nice addition to my hi-fi. I plugged it directly into my Schuko power strip, and voila—everything just sounded better—as simple as that!

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Write Your Own Review

iFi Audio AC iPurifier Active Noise Filter

We are interested in your opinion of this product. let us and other customers know how you feel by filling in the comment field below. Your review will appear in this section within 3 working days.

Please do:

  • - Write 50-300 words for the product
  • - Comment on the products value and effectiveness
  • - Tell us if you like the product, but most importantly explain why you like or dislike it
  • - Mention related products and how this one rates by comparison
iFi Audio
EU Schuko Mains
USA Nema Mains

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