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The iFi SPDIF iPurifier is a compact, aluminum-encased digital audio signal optimizer designed to enhance sound quality by drastically reducing jitter and digital noise. It features galvanic isolation to prevent contamination, supports simultaneous optical and coaxial outputs, and improves sonic detail, separation, and dynamics after a recommended burn-in period. Ideal for audiophiles and professionals seeking cleaner, more engaging digital audio from devices like CD players, DACs, and streaming boxes.







| ASIN | B01KKFTM5S |
| Best Sellers Rank | #424,431 in Electronics ( See Top 100 in Electronics ) #502 in Digital-Analog Converters |
| Brand | iFi |
| Customer Reviews | 4.0 4.0 out of 5 stars (116) |
| Date First Available | August 16, 2016 |
| Interface Type | Coaxial, USB |
| Is Discontinued By Manufacturer | No |
| Item Weight | 1.12 ounces |
| Item model number | 9861e534-7cd8-41ef-b8c6-1e276dd3beb4 |
| Manufacturer | Abbingdon Music Research |
| Material | Aluminum |
| Maximum Supply Voltage | 5 Volts |
| Mounting Type | Cable Mount |
| Number of Channels | 1 |
| Number of Pins | 4 |
| Product Dimensions | 3 x 1 x 1 inches |
C**S
Bravo ifi!
Here is my experience with the ifi Spdif iPurifier 2 This is how the ifi Spdif iPurifier 2 is installed in my system: Windows 10 PC (Asus MB with Realtek Spdif output) --> Spdif cable built by me --> ifi Spdif iPurifier 2 --> Modius --> Musical Fidelity X-10v3 tube stage --> Asgard 3 --> Cardas Clear Light cable --> Audeze LCD-XC (2021). From being in the home audio hobby for 25+ years I have a lot of very nice ancillary gear and cables. I used a lot of these ancillary cables and isolation power conditioners with the above setup to tweak and tune this headphone setup, this is before the ifi Spdif iPurifier 2 installation. The only thing that changed with my setup is the insertion of the ifi Spdif iPurifier 2 between Spdif cable and Modius. The below review is going to show I really liked what this ifi device does for my setup. But before trying the device I was not expecting a whole lot. I knew cleaning up a source signal "could" make a big difference but for $200 it was just a lets see for fun experiment. If it did not show enough value I was planning to return it. The TL;DR review: Ever have something that you liked and would not be without it? This is the case for me, in my system with the ifi Spdif iPurifier 2. I will not listen to it now without it. "After enough burn-in" the sonic performance and how engaging the listening experience is drastic. YMMV but in my experience rarely can $200 (or $230 with tax and shipping) yield such a sonic improvement. This also has showed me how bad the output of Spdif is from my ASUS motherboard is. My setup sounded very good before, now it sounds fantastic and much more engaging. If you want more performance and the cost of the ifi Spdif iPurifier 2 is within reach, I highly recommend trying this device within your system. Amazon has a 30 day return policy just in case you do not see the value in it. The Review: Burn-in: There is about 80 hours of continues signal through the unit so far. Burn-in is real on the unit I have. I would listen to the system during the stated burn-in period on and off a few times a day. When first installed the system sounded way off. Then it goes through a lot of sonic swings like 30%+ loss of bass, pitchy upper mids, very lean sound signature, weird sounding timing, etc. Then parts snap back and go away. At around the 50 hour mark the system started to stabilize and sound more like it should, meaning with timing/cohesiveness and without the weird peaks and dips in the frequency range. Now at around 80 hours or so it really sounds fantastic. To burn-in the device I ran pink noise and brown noise through the unit from PC 24/7 (when I am not listening). Asgard 3 was powered on but volume turned all the way down during burn-in. I leave the Modius and Asgard 3 on 24/7. What bothered me: Before sharing what this device did for my system I want to mention the one thing that I do not like. The ifi device is suppose to plug directly into the DAC Spdif input. The fit is a tad loose, not firm into socket. I am use to WBT or Eichmann plugs that fit tight, this fits like a cheap weak freebie RCA plug when inserted to the Modius. Does stay in place and works, but not very reassuring. Noise Reduction: Now a days when watching or reading reviews what is mentioned often is "source gear". These reviewers are referring to DAC and amp. When I think source gear I think of the component that is supplying the source signal. The old adage of "garbage in, garbage out" is what this ifi device is addressing. The reason Spdif is used in my setup vs USB is less noise when volume is turned up. And Spdif in my setup sounded very close to USB, Toslink was to lean for my taste. For some context, without the ifi device when the computer is turned off (no signal) the Asgard 3 (in high gain) volume can be cranked to max (5 o'clock) and there is no noise or distortion. With computer turned on (still no signal) noise can be heard at about 2 o'clock or so and gets louder as the volume is turned up. USB in my system is worse and I can hear the hard drive and bus sounds. With the ifi device installed into system, with computer on and no signal I can crank the volume all the way up to max and there is zero noise! Is this the galvanic isolation doing its thing? Sonic performance difference: This is the hardest part of any review because it is very subjective and often hard to articulate. Everything in this section will be the difference after inserting the ifi Spdif iPurifier 2 into system and after burn-in (notice I keep bringing this up?). Improvements were quite vast, spanning the entire frequency spectrum. Detail retrieval vastly improved, separation of all sounds, decay, realism or timbre improved. Macro dynamics (soft to loud) improved also but not to the same extent, maybe by 5%-10%. Also to note even though the bass is more defined, more texture and nuanced there is approx. a .5db loss in bass. I did have to boost EQ +.5 bd to get the punch I use to have. Everything heard has more texture and is more nuanced and is more clearly defined and separated then before. Maybe it is all those raves, clubbing and concerts when younger that has impaired my hearing. I like listening at a higher volume, I can usually hear everything better. But now I can listen at a lower volume and everything seems to be heard clearly. Before sometimes certain sounds sounded a tad fuzzy or smeared until I turned up the volume. To summarize, the addition of the ifi Spdif iPurifier 2 to my system has definitely increased the level of enjoyment while listening to it. I really liked the system before but now it feels addictive! Bravo ifi, incredible bang for the buck! Oh yah, YMMV and I have no affiliation with ifi. ifi does offer a similar USB product but I have not tried it. Hopefully this review helps someone else. Peace
P**T
A Worthwhile Addition
Before purchasing the SPDIF Purifier 2, I read the company website's information, reviews from internet enthusiast websites, enthusiast magazine reviews posted on the internet, and some posted opinions by people who had actually purchased the product. The buzzwords used in the company's website may excite the imaginations of audiophiles but I wouldn't blame a soul for being skeptical. The thirty day trial period offered by Amazon meant that I could get a realistic in home opportunity to judge whether it would be money well spent so I finally fired up the credit card and took a chance. The Purifier 2 is described as restoring the digital information to proper form before it goes into your DAC. In my two channel system, modest as it is, it certainly made a difference. The most obvious improvement is that it lowers the noise floor of my system. That makes the presentation of the sound stage bigger from top to bottom, left to right, and front to back. Vocal harmonies and instrumental duets become distinctly separate. Instruments occupy their own space. The dynamic range or the limitations of dynamics in a recording are better defined. The decay of notes are more distinct and longer, particularly cymbals which will seem to shimmer more than before. Even if you've only played "air drums", percussion instruments are easier to follow. Bass notes became better defined and tighter, more "punchy" if you will. I suggest that a Purifier 2 makes more sense as a value purchase to improve digital playback a good system than adding a new digital cable. The point of diminishing returns shows up sooner in digital cable applications. If the signal is polluted to begin with, no amount of copper or silver conductor is going to achieve very much other than draining your wallet. Those who are fortunate enough to afford CD players or DACs with the same features as the Purifier 2 don't need one. Everyone else should consider whether or not to take advantage of the thirty day trial and see for themselves if it makes a positive difference.
T**S
Just why a male coax out??
Do I want this dongle sticking into my receiver? NO If I've got coax female coming out of say my Sonos box it goes via a cable to this thing, fine. Then I use it to split to RCA coax and optical and then wire to my receiver and another output. Everyone has great RCA coax cables for that. But not single female to male cables. Or then I have to use a trashy female to female converter to possibly stuff up the signal. It just doesn't make sense. Otherwise it sounds great, works, etc, but this jack thing is just?.?
P**L
J'ai acheté cet interface numérique pour remplacer un produit concurrent bien connu, une clef USB M2Tech Hiface dont la prix est assez proche. On est toujours surpris de l'apport ce ces produits sur la qualité sonore des liaisons numériques, en particulier avec des connections USB en sortie des ordinateurs. Ma Hiface me donnait toute satisfaction, mais à ma grande surprise, le son produit par l'interface iFi est encore meilleur, avec une meilleure définition, une image sonore plus précise et un des basses plus fermes. Je n'avais pas acheté cet interface pour améliorer la qualité sonore, mais pour résoudre un problème consécutif à mon changement d'ordinateur : mon "nouveau" MacMini, un modèle d'occasion de 2012 qui me sert de serveur musical, est affecté d'un problème qui touche occasionnellement les ordinateurs Apple de cette époque et qui est souvent mentionné sur les forums consacré à l'audio numérique : lorsqu'on utilise un DAC USB, il y a de temps en temps des "click" et des "pop" numériques assez désagréables. Cela se produit également avec les "cartes son" USB" et Thunderbolt. Comme j'ai acheté le MacMIni d'occasion et que j'ai fait changer le disque dur, il m'était impossible de le retourner. J'ai un DAC ancien mais haut de gamme sans entrée USB et je passais par une clef M2Tech Hiface pour convertir l'USB en SPDIF/RCA, avec "recklocking". Ca marchait très bien sur mon ancien MacMini, une antiquité victime d'obsolescence NON programmée, qui fonctionne encore parfaitement mais ne peut pas exécuter le logiciel audio Audirvana 3 que j'ai décidé d'adopter. D'où achat d'un nouveau MacMini et découverte du problème des "click" et "pop". J'ai donc passé du temps sur les forums Mac et audio et j'ai fait quelques essais ; j'en suis arrivé à la conclusion que le problème vient de l'alimentation du port USB du Mac (cela arrive aussi sur les PC). Une solution de luxe mentionnée sur les sites "audiophiles" est de faire modifier le Mac en remplaçant son alimentation à découpage par une alimentation linéaire, ce qui est compliqué et cher... et sans doute risqué. Mes essais m'ont montré que les "click" et les "pop" ne surviennent pas sur la sortie HDMI ni sur la sortie Optique du Mac (Mini Toslink combinée avec la sortie casque), ce qui confirme que c'est l'alimentation du bus USB qui est fautive. Une solution aurait été d'acheter une alimentation USB isolée telle que celle proposée par iFi Audio et d'y brancher ma clef M2Tech qui doit être alimentée. Mais ça revient très cher : de 250 € à 420 € pour l'alimentation, plus la valeur de la clef M2Tech. Ca fait un budget de 400 à 600 € pour connecter le Mac au DAC, alors que la iPurifier donne sur le papier le même résultat pour 179 € : l'isolation de l'alimentation provient de la connection optique en sortie du Mac. Et cerise sur le gateau, le son est meilleur qu'avec la M2Tech Hiface : j'ai comparé avec iTune avec la iFi sur le nouveau Mac et la Hiface sur le vieux. Il est utile de signaler que le iFiPurifier a sa propre alimentation qui est sans doute à faible bruit et qu'il n'est donc pas perturbé par l'alimentation USB, alors que la clef M2Tech est alimentée par le bus USB. Il y a quand même deux défauts qui justifient la suppression d'une étoile (je suis très dur) : - avec l'alim du iPurifier qui se branche sur le côté et la sortie fibre sur la face inverse, ça fait plein de fils qui pendouillent, - si on veut utiliser une entrée RCA sur le DAC, ce que j'aurais voulu faire, il faut brancher le iPurifier directement sur la prise RCA. Or à cause de la largeur de l'objet, il n'y a pas toujours assez de place si les connecteurs du DAC sont très proches ; j'ai le problème car j'ai plusieurs appareils numériques branchés sur mon DAC qui sert de sélecteur de source. De ce fait, j'ai du utiliser ma prise optique Toslink, mais je n'en ai plus de libre pour brancher ma TV (presque toutes les TV ont des sorties optiques) ; de plus c'est théoriquement moins bon. En tout cas, à prix presque équivalent, le iPurifier est un meilleur produit que la clef M2Tech Hiface, pourtant déjà excellente, ne serait ce que parce qu'il permet toute les combinaisons entrée-sortie électrique-optique. Il est même livré avec des adaptateurs RCA/BNC et des adaptateurs Toslink/MiniToslink. Et le son est meilleur ! PS J'ai travaillé 10 ans en optoélectronique et j'en profite pour passer un petit message à ceux qui se demandent ce qui est meilleur : liaison optique ou électrique (RCA, BNC ou AES/EBU). Dans les deux cas, les cables jouent une rôle important, mais il y a des solutions de même qualité dans les deux cas. Mai il faut savoir que la conversion électrique/optique et optique/électrique ajoute du jitter de transmission, ce qui n'est pas dans une liaison électrique. Donc à qualité de câbles équivalente, l'électrique est meilleure, sauf s'il y a du bruit d'alimentation dans l'appareil émetteur qui se mélange au signal (à l'arrivée, on y échappe pas). Mais ce n'est pas dans le cable que réside la grosse différence, c'est dans l'interface d'entrée et de sortie.
R**6
私の愛用しているオーディオ機器は『ネットワーク・オーディオ』です。 先ずは、愛用のオーディオ機器を紹介します。 ネットワーク・オーディオ・プレーヤー Pioneer『N-50』 USB-DAC TEAC『UD-501』 プリメイン・アンプ TEAC『AX-501』 スピーカー B&W『685S2』 LAN HUB バッファロー『ネットワーク・オーディオ用』 NAS バッファロー製『1TB』の製品 電源タップ FURUTECH『6口タイプ』 壁コンセント FURUTECH『ロジウムメッキのモデル』 壁コンセント・ベース FURUTECH製 壁コンセント・プレート FURUTECH製『銀色のプレート』 その他 ケーブル類は省略しますが・・・。 AET製のケーブル等 AET製のインシュレーター類 SAEC製のLANケーブル類 ORB製のSPケーブル JBL製のSPケーブル スピーカーはバイワイヤリング接続で繋いでいます。 では、 このアイファイオーディオの製品のレビューをしたいと思います。 先ず、この製品のテクノロジーの発想が実に面白い。 何でも軍事テクノロジーをオーディオに採用するなんて発想は誰が思い付いたのか?。 まあ、そんな事はどうでも良い。。。 一番の問題は音質だ。 届いて早速、N-50とUD-501の間『DACの入力端子』に繋いだ。 しかも、この製品は別電源が必要で電源を供給しないと使用できない。 その為、専用のACアダプターが付属されている。 このACアダプターは単体でも販売されている。(¥7,340円程) で 音質の方は、期待を大きく上回る程の効果が得られた。 先ず、音が出た瞬間に今までとは全く違うと気付いた。 その音質は、とても素晴らしい ! !。 低音域~高音域までワイドレンジに成り高解像度で音像定位が明確に成った。 各、楽器の音もハッキリと聴き取れる程の情報量に感激し音場感も素晴らしい。 ノイズ感が全く無いと言っても過言ではない。 確かに失われてしまった音が元のオリジナルの音に戻ってると言う感じだ。 ヴォーカル物も素晴らしくアーティストの声の特徴もハッキリと聴き取る事ができる。 もう、音全体の豊かさや存在感及び透明感等 何れを取っても文句の付けようが無い。 こんな素晴らしい製品が出てきてくれて感謝する。 販売価格 ¥19,980円/税込み この価格以上の価値が有ると私は思う。 もう、素晴らしいの一言だ。 1回、騙されたと思って購入してみて下さい。 誰しもが素晴らしいと思える画期的な製品。 後は、言葉が出ない。 それ程の音質改善効果だ。 本当に購入して良かった。
G**L
Ok I’m floored with the result. I just installed it between my Airport Express and my Amp/DAC. Really wondering why I waited so long to buy one of those! I have the same great sound that I do if I connect my computer directly to the Amp. For a long time I had accepted the fact I’d either have to wire directly for the best sound, or having the convenience of wireless airplay from iPhone/Appletv but not both. Not any more! The little thing really cleans up the signal and I can enjoy my Audio System to its full potential!
W**G
Wahrnehmbare Klangverbesserung im unteren Hochtonbereich bei Wiedergabe von im TV laufender Musik über meine KEFs.
F**O
Excelente producto
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