iFi iPurifier3 USB Audio Purifier and Data Signal Filter (USB Male Type B, White)

iFi Purifier 3 USB Type B purchased for use between my HP590 desktop computer and my Musical Fidelity MX-DAC digital to analogue converter with in a second system in my home.All my CD's have been copied onto my Seagate Expansion 4TB hard drive, they been copied 'In real time' using a Denon DN-500R SD Recorder using the 24bit-44.1kHz direct digital connection used between three different CD playback sources, a Marantz SA11s3, a Marantz UD7007 [also used for SACD Copies using the Javascript copy method] and a Marantz CD6007 [CD player source used dependant on the type of music to be copied] then loaded onto my Seagate Expansion HDD. [i'm retired with a lot of time on my hands]I am using a Audiolab DC Blocker/Mains filter that feeds mains 230v into a Airlink BPS500 Balanced Mains Power Supply that in turn feeds my HP590 Desktop computer using JRiver Music Centre 30 playback software that is configured for 'Audio Only Playback' playing 'Hi-Res audio' via PCM and DSD.I am also using another Audiolab DC Blocker/Mains filter on my Musical Fidelity MX-DACI do not use any other form of playback ether from any Streaming sites or MP3 files or flac or MQA or any other form of compressed audio.Ask your self what you are trying to achieve and what your expectations are from this item.I firmly believe that the only way to listen to very good music reproduction is ether a with a very good vinyl replay system or digital audio via a CD/SACD Player, a very good one, along with a very good amplifier and a very good pair of loudspeakers, CD replay from a very good CD player out performs any Hi-Resolution download played back from a computer no matter how much you spend on a very good USB DAC so i would think twice about getting rid of your CD collections.If, like myself, you are fortunate enough to own and use said equipment then no matter what item you use between your computer and digital to analogue converter to improve the sound quality of a CD/SACDor Hi-Resolution downloaded file loaded onto a computer hard drive is going to make your music on your computer sound anywhere near as good as listening to your High End Hi-Fi system.I removed my Audiolab DC Blocker/Mains filter and my Airlink BPS500 from the HP590 desktop computer for the first initial tests.I started using the iFi Purifier 3 and gave it 24 hours of constant use playing a file on repeat before i came to the conclusion after a day of constant use that while it improved definition and clarity the sound quality still lacked warmth and atmosphere on the files i played back.Then i reintroduced my ''Audiolab DC Blocker/Mains filter and ''Airlink Balanced Power Supply'' to the computer a WOW, superb.Definition, Superb, Clarity again superb, warmth and atmosphere in the recording, yet again superb.The iFi Purifier 3 worked for me, i hope everyone gets the same improvement i got, it's the nearest i have come to quality CD/SACD playback using a computer file, still no where near as good as a CD or Vinyl LP but it is getting better with further new technical advances.Well done iFi and their parent company AMR and thanks goes out to JRiver Media Centre 30, superb software.

I bought this, attached it to my USB cable and plugged it in to my Chord DAC. It is amazing.There is no longer any bloat to the sound from the speakers. Before using this I had to be careful turning the volume up as I knew which notes and sounds would bloat and stand out badly. The sound is now ultra clear and "stays back" at the speakers". No forced sound at all. I never noticed any background noise before but I now know what silence means; I can hear way more going on in the music, details coming through from CD's I have listened to for 30 years. When I listen to music now, it really does sound like I am in the studio with the artists. I can hear the reverb tails on vocals that were hidden before. Singers like Barbra Streisand and Celine Dion no longer have that screechy edge. The sound is smooth and velvety and finding the sweet spot is so easy. The depth of the soundstage is brilliant, I can hear horns and drums that are way behind the violins. The whole sound is lighter and "free". I can hear longer fade-outs on songs that I didn't know existed before. The bass is deeper and thicker in a beautiful way and I find myself tapping my foot all the time where I never used to. I have to check that I am listening in stereo as the soundstage almost envelops me on some songs. Fantastic. I cannot recommend this enough, even on expensive systems.

Bits are bits, but the way in which they are served up to a DAC makes all the difference in the world. Timing is crucial and the iPurifier goes some way towards eliminating issues caused by noisy signals and bad timing.Prior to installing the product (well, sticking it onto the end of my Wireworld usb cable and plugging the other end into my Pro-ject Audio Pre Box RS Digital) I had suffered the pain caused by a direct connection to my Mac Mini. Violins were harsh, dense orchestral section were smeared and the highest notes (bells and symbols, for example) had their sound 'cut short'. The iPurifier 3 works. It significantly reduces 'digital nasties' caused by time smearing (just google it before you rubbish the idea!).It is NOT as effective as using a dedicated network audio adaptor, such as the Pro-ject Audio Stream Box S2 Ultra, but that costs much more and I wanted to find a more cost effective solution.Whether the iPurifier works for you is difficult to say. All I know is that for my particular needs and set up, the iPurifier 3 is an almost perfect solution to a nasty problem :-)

Honestly, just like a few others have written about their own personal experience, I simply purchased 2 units out of curiosity, not expecting much but the usual "Oh it works magic" responses.I was wrong. Very wrong. I still don't quite get the actual technology, and I'm not shy of deep tech, but it works as described.I asked my daughter to assist me with a literal blind test, 6 times at random - and all were correct. The sound, no matter how improbable it may seem, DID improve and sound... I don't know how else to put it, cleaner.I tested the unit between a T+A DAC 200 and a Hifi Rose RS150B, both of which I am quite pleased with. So how can it actually sound better? Perhaps the de-jitter, perhaps the noise filtration at inaudible levels, I can't say.I played "A Deeper Blue" by Darshan Ambient 6 times. Each time I would ask my daughter to randomly decide to plug the unit in between the 2 devices, and each time, I guessed right.Full disclosure: I have purchased a few ifi products in the past and trust their quality and realism : iFi xDSD, xDSD Gryphon, Can Signature, to name a few.Well done iFi.Still don't believe the reviews? Then don't buy it. Simple. But if you trust that some of us will give brutally honest review, for or against, please go for it.