iFi USB Audio Power Supply

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Alimentatore a batteria a bassissimo rumore(0,1uV)per DAC USB.


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199,00 € tasse incl.


La caratteristica più importante di qualsiasi dispositivo audio USB (DAC USB, amplificatore USB e USB Speaker, ecc) è l'alimentazione. 

Sostituisce l' alimentazione USB con la pura potenza di una batteria per darvi le migliori prestazioni per i dispositivi audio USB.

Questo super regolatore consente di separare  l'audio USB e l'Uscita  di potenza USB, con un innovativo sistema per eliminare
la contaminazione del segnale.

Per migliorare tutti i dispositivi audio USB (DAC,SERVER AUDIO ECC.), abbiamo voluto sviluppare non solo una migliore alimentazione, ma la migliore alimentazione per tutti i dispositivi audio. 

USB audio without iUSBPowerUSB audio WITH iUSBPower



To create a USB power supply that is ultra-quiet is an engineering feat in its own right. We went several steps further. The Super Regulator technology encompasses; multi-stage and multi-order power purifying with filtering. We even commissioned a special, audio-grade USB power supply unit. The iUSB with an excellent voltage accuracy of 0.5% is even quieter than a 9V dry cell battery.

To put it into perspective, if the DC power supply voltage from the iUSBPower was taken as equivalent to the sound level of a large calibre gun fired right next to you (painfully loud, usually taken as around 140dB), the noise produced by the iUSBPower would be completely inaudible to the human ear.

Power Supply Noise




The IsoPower system is a completely new way to connect your USB audio device. There is the standard USB connection option; but with the upcoming iFi dual-path Gemini USB cable, our engineers developed the IsoPower system which offers the option to run separate power and audio data lines. You wouldn’t place interconnects and power cables together so why should the USB connection do it?

IsoPower eliminates any pollution between data and power lines. It keeps your USB audio data free from contamination and removes the USB Signal noise from the power supply lines, to enjoy the maximum performance from your USB audio device, unhindered.



Our engineers developed the advanced IsoEarth technology specifically for the iUSBPower. By breaking the noisy DC ground connection between the computer and your USB audio device, this further reduces the ground noise by a factor of 10. Your USB audio device can now operate in the cleanest environment possible; allowing your music to flow.




Output Voltage:5V±0.5%
Output Current:1A
Output Noise:0.1uV(0.0000001V)
High-Speed USB 2.0:480Mbps
Input Voltage:AC 100 – 240V, 50/60Hz
(Ultra Low-Noise Power Supply included)
Power Consumption:< 9W (includes powered USB device)

User Manual

Qualche review dell'apparecchio:

iUSBPower reviewed in WHAT HI*FI magazine!


Qvinta Audio (iFi:Russia) sends through the ‘What HI*FI’ edition where the iUSBpower has been reviewed and we’re over the moon!

Get on down to your nearest store and collect a copy!

Specials thanks to What HI*FI magazine and Qvinta audio (iFi:Russia)!


iUSBPower: ‘created to resolve problems’

“The miniature device is wedged in the path of electricity from a computer USB-ports to the USB-port external DAC to repeatedly reduce the level of noise and interference. For this purpose it is equipped with a host of proprietary technologies. For example, the system IsoEarth, break ground on the electrical circuit between the computer and audio system. IsoEarth function is activated by pressing a special key and ability to reduce background noise about tenfold. Another powerful tool for cleaning contaminated electricity – a proprietary filtration system Super Regulator.When working in conjunction with each other these two technologies reduce the noise level of the computer USB-powered almost a thousand times, making it cleaner than power from the internal battery.”

Thank you Artem from ‘doctorhead’, borisov and Qvinta-audio (iFi:Russia)



Richardo of Flickr says “Once you’ve tried iFi, there’s no going back”

“After adding a dac to my system, it’s impossible to go back, for some years I was trying to add one. Finely brought one. iFi iRack completes the setup, iFi iDSD, transforms a not bad sound in Harman Kardon GLA-55 in an Audiophile computer heaven, I did not even believed that the GLA-55 could be so much better, but believe me, the iFi iDSD, iFi Dac, are something amazing. You need a good hi resolution audio like the studio masters from linn, chesky or HD Tracks to listen real hi res sound in pure nirvana. It can also listen to acc from iTunes with better quality, but acc or mp3 show all limitations after listen studio masters, there is no going back. iUSB takes the noise from the usb signal, interesting as this really works, more precise sound. iRack is only cosmetic for me, but beautiful.”

Thanks Richardo!

Check out Richardo’s profile here! https://www.flickr.com/photos/macdesktops/


Float like a butterfly, sting like a bee! iDAC & iUSBPower packs a punch!

“iFi iDAC – that’s what it was about. IFi Company strongly recommends to connect all its products through its proprietary power supply iFi iUSB Power…..The first track, which was launched by iDAC Allan Taylor Colour to the moon in a format flac. Then there was a whole set of Sting, Iron Maiden, Alessandro Safína and of course Duft Punk – Get Lucky (where the same without him). DAC handled excellently! All sounds very decent and nice. With good detail and portrayal. Good attack only stressed the detail when you feel the spinal cord, as the drums run around the room and Sting sings to you in the right then the left ear. In general, the evaluation is very good.”

Thanks Victor Kosteniuk & Avero.com.ua!



iUSBPower: Used and adored!

Steven over at Audiostream has reviewed the JCAT reference USB cable whilst using the iUSBPower!

“About half of my evaluation time was spent with the JCAT Reference plugged directly into my computer. But the performance of the cable can be elevated with a number of tweaks I have discussed in previous reviews. Using the iFi Audio micro iUSBPower powered by an HDPlex linear power supply, resulted in a substantial improvement when using the JCAT Reference, or for that matter, any USB cable. The sound became more relaxed and the soundstage opened up.”

Thanks Steven and Audiostream!



Jdlivestrong’s custom ‘AVC iRack’ for the iDSD Micro & iUSBPower!

We just had to share this….a custom ‘iRack’ built by Audiophile Vibration Control. While it is not the iFi iRack it sure is fine!

“After just over a week of owning the iFi Micro iDSD and iUSB Power combo (I’m calling that combo iDSD Stack ) I knew it was special and that it was in my system to stay for a very long time. I decided to pack up my iDSD, iUSB Power, and Gemini and send it to Mike over at Audiophile Vibration Control (AVC) so he could design and build a rack that was more stable and offered better isolation for the iDSD Stack. The reason for this is that it plays double duty for me – I use it for headphones as well as in my main 2 channel rig. After a couple of weeks of prototyping, he came up with something that far exceeded my expectations.”

Nice one Jdlivestrong!


j'ai teste? 2

iUSBPower: Rigorous USB power!

We received this PDF from our distributor for France, Elite Diffusion.

“We tested this month the iUSBPower supply and USB cable Gemini. Both are designed to improve the return via the USB input of the converter…. we have listened carefully to the effect of this accessory. When it is inserted, there may be several things. The soundstage wins first slightly in clarity, but also by definition no extra hardness. The character of the tested converters seems not altered, but simply enhanced by better transport. The silences are also taking body, the residual noise pretend as finely erased. The general impression rest of our multiple plays, is a gain finally bringing a bonus quality stamps and suggestive dynamics.”

Translated by Google.

Thanks Elite Diffusion! (iFi:France)



iDAC & iUSBPower: Beautiful musicality!

” For this, the British manufacturer has created a new brand by the name of iFi-audio, it does not take away the fact that they remain entirely designed by AMR….The iFi iDAC is really a nice surprise, which intelligently combines listening pleasure and good quality / price ratio. It offers a beautiful versatility, since we are talking of a self-powered DAC-compatible 192/24….A beautiful musicality and beautiful stamps…..Dynamic range, THD + N and cleanliness of amazing signal (with iUSB Power)….The price / quality ratio”

Thanks Pierre Dubarry & hdfever.fr!


office audio gear 2

Proof is in the pudding say’s Solarrdadd of Blu-ray.com about the iDSD nano & iUSBPower!

We received some kind comments from Archie aka Solarrdadd and we thought to share!

“i was looking for a good DAC, for not a lot of money and one that didn’t take up a lot of desk space….i purchased the iFi nano iDSD DAC & a companion product, the iFi micro iUSB Power….the ultimate proof was in the pudding. once i played that first song on the new setup in my office, i was sold….i have a wide variety of music on my system, everything from classic rock, big band, old world jazz, modern rock, R&B, classical music, i have everything. the DAC makes everything sound their best….when i’m at work, the good music helps me think and gets me through my day and get complicated projects done. i’m blessed to be able to have this kind of system in my office and listen to it without having to use headphones. i am able to have the same music i love and listen to at home, but, now, at work and it sounds good too.”

Thanks Archie!

Thor & Duke Nukem agrees too!



Bravo iFi! Petr of Svetaudia reviews the iDSD Micro, Gemini, iPurifier and iUSBPower!

“IFI iDSD Micro is one of the best equipped D / A converters, as regards support audio formats. Add to that the battery power, headphone amplifier, and suddenly we have a very interesting product for those seeking excellent cost to performance….Price performance ratio is excellent and IFI Micro iDSD becomes my references in the price range to 15,000…All three products from the portfolio of IFI deserve in their categories utmost attention. When you combine all three products together, to 25 000 CZK get enough quality reproductive system to play music on your PC or Mac that to subdue you have to dig into your pocket probably much deeper….IFI Bravo!”

Thanks Petr Štefek of svetaudia.cz and Exaudio.cz!

headphone guru

Headphone Guru finds iUSB/iPurifier makes digital more analogue and are a keeper!

Lee Scoggins of Headphone Guru penned the following very nice review of the iUSB Power and the iPurifier. Lee wrote, “It makes sense if you think about it. Cleaning up USB level power has the same effect as a dedicated power line and a good line conditioner. All three provide the best possible foundation. As you lower the background noise, you hear more across the board – bass, midrange, and high frequency. The iFi “iUSB” Power Conditioner is well built, has a beautiful sparkly finish, and comes packaged like a well-designed Apple product. Pretty amazing for the under $300 price point. I’m impressed and will be keeping these in the system for better digital.”

Thank you Lee and we hope you enjoy the pair for many years to come!



As Dung of PCWorldVN reviews iFi!

“Now, people can listen to the sound of his “circle from the heart”, pure from the input device to device and wire FIs iUSB Power Gemini FIs with an investment budget is not too high…when adding the first move i-purifier, music became smoother. When using additional wireless USB Cable Gemini, more music more smooth, round berry guitar sound better…And finally configured with transit from your computer to the amplifier includes a USB cable, electromagnetic interference filters i-purifier, and wireless devices iUSB Gemini Power USB Cable, heard the sound becomes completely natural, scrumptious.

Thank you As Dung!



Windwolf howls out for the iUSB Power!

This is a short video but second from WindWolf (Head-fi username, Airy Fidelity on youtube) who highly recommends the iUSB Power as it improved his setup by 20%!



iUSB Power: Marvelous new upgrade for USB-powered DACs says George of Computeraudiophile!

“the bottom line is that the original power source is the computer, or perhaps a powered USB hub; not the most prepossessing of power sources….The USB output of my laptop (which I use as a music server) fed into the input of the iUSB, and the DragonFly plugged into the “Music + Power” USB “A” output of the iUSB power supply. From then -on everything else was as before…I couldn’t believe the difference! The DragonFly v.1.2 was noticeably quieter – especially through ‘phones. But through speakers, the soundstage opened-up, image specificity became more precise, the bass tightened-up noticeably, and the top end became even smoother, and more open, with more “air” around the instruments. This is a dynamite upgrade to already great sounding DAC. I recommend that you try to hear it for yourself!”

Thanks George AKA gmgraves2@comcast.net of computeraudiophile.com!



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iFi USB Audio Power Supply

iFi USB Audio Power Supply

Alimentatore a batteria a bassissimo rumore(0,1uV)per DAC USB.



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