Home Latest News iFi Audio Pro iDSD DAC

iFi Audio Pro iDSD DAC

by Admin
0 comment

iFi Audio Pro iDSD DAC

The final 2 years of pc audio (2017 – 2019) for listeners and musicians have been not like something I’ve seen or heard because the earliest thrilling and revolutionary days of the introduction of DSD as SACDs into the market which I participated with as an album (SACD The Window launched in 2003). After the SACD early years (~2000 – 2005) pleasure the following step was to launch Sony DSD Disc Format downloads in 2009 with my launch of The Window in stereo, adopted by Crossing, after which each as multichannel 5.1 studio DSD64 masters. Have in mind round then that Netflix streaming was nonetheless new, 5mbps Web obtain pace was a marvel to have, and DSD enjoying on any of the 30+ million Sony Playstation3 in houses then was astonishing.

Following these years of early SACD Discs (.ISO picture downloads to burn to excessive capability DVD-Rs) 2013 and 2014 have been the start of Sony’s official Excessive Decision Audio (HRA) program eradicating DRM from DSD recordings and inciting many firms to create low value DSD USB DACs and headphone amplifiers that quickly flooded the market and commenced encouraging many to hearken to wonderful recordings in each DSD and PCM (24/96 and above, and DXD).

Since 2016 the introduction of MQA as each remasters for downloads and low bit charge, excessive decision (unfolded as much as 24/384 however delivered at about 24/48ok or far much less in my expertise (FLAC ~700-1000kbps)), streaming from TIDAL and different companies additional places the cheap actuality of the best high quality studio masters within the accessible fingers and ears of music lovers from one thing as easy to make use of as an iPhone or Android smartphone, pill, or from laptop computer or desktop. Hello-res from a smartphone streaming from the web. Who would have guessed? Nobody did, not too way back.

On the excessive finish of substances in these classes, and as described on this publish concerning iFi Audio’s Professional iDSD product launched in 2018, there are merchandise now out there that may be linked to dwelling studio setups delivering bit-perfect transmissions of encoded MQA and 1-bit DSD over WiFi in addition to DSD1024 resampling of any streaming supply equivalent to Spotify (from 160ok as much as 320ok by means of the Web to your telephone). These identical standalone receiving DAC/DLNA/AirPlay/Google Forged models may decode MQA from a linked pc (by way of WiFi or USB), or web streaming hi-res TIDAL masters. None of this was possible in 2009, or 2013, or 2016, not to mention anytime earlier than that.

iFi Audio Professional iDSD DAC/streaming/preamp and xDSD cell DAC/headphone amp

Leap To The Level – What Do I Get Studying This?

You get to think about residing and/or working in an surroundings the place you may play any music you want in any audio format from any system you may need (together with your Sensible TV or Apple TV or CD/DVD participant) by means of your stereo setup or headphones with the perfect sound you could have ever heard from the very same music your ears might already know very effectively. I consider it would sound higher to you than it ever has earlier than, although the listening room, the headphones, the stereo or studio displays you’re utilizing might not have modified in any respect.

What’s modified is what I’ll name the digital audio cleansing and grooming wanted to create a wonderful high quality analog rendition of the music, as they are saying, “as the artist intended.” Right here is one artist musician who agrees that is lastly potential in a single field whatever the supply or format of the information or the vacation spot of the sound supply (headphones, PA, stereo, studio displays).

Personally, I believe that you simply get the perfect sound from your personal digital album/cd/streaming library assortment, higher than ever earlier than, by routing and refactoring the audio by means of the iFi Professional iDSD.

The iFi Audio Professional iDSD digital to analog converter supplies an extremely efficient and genuine supply of analog audio from nearly any digital supply utilizing its distinctive and extremely progressive mixtures of filtering, DSD1024 resampling, analog tube preamplification, and balanced outputs with headphone impedance matching.

For the primary time, what’s generally known as hi-res pc audio requires no pc to play digital audio from any web stream, each lossy and lossless into completely pure and studio high quality analog music by means of your headphones or audio system. And there’s no Bluetooth; amen to that too!

All of this could happen over your native WiFi setup wherein the Professional iDSD acts as a DLNA or UPnP (AirPlay or Google Forged) endpoint and in reality can prolong your Web router’s WiFi vary to permit native gadgets like smartphones obtain streaming music from favourite sources like Spotify, TIDAL, Pandora, Apple Music, Amazon Prime.  In my take a look at the Web WiFi router was situated upstairs with a barely weak 802.11 sign for smartphones downstairs. So I had the Professional iDSD situated downstairs air hyperlink cleanly to the WiFi router upstairs, and had my telephone and pc WiFi join on to the Professional iDSD unit as their WiFi router. These music supply gadgets have been then extra dependable to play music persistently from, and even for some other web entry they may require.

Extra concerning the Wow….

I’ve learn some opinions concerning the Professional iDSD and most of them say they don’t know precisely what to name the system, or they are saying it has so many options that it’s exhausting to explain. I don’t have any drawback describing what I see and have used the iDSD as: The final word media refactoring merchandising machine.

It performs from practically any supply and delivers to just about any receiver endpoint for playback in a wonderfully cleaned up audio state of sound high quality excellence. It helps the native supply format if desired (lossy MP3 or AAC, lossless CD, MQA, DSD) however has super sound high quality enchancment choices as effectively. It’s indiscriminate about what sort of music it receives and how much refactored music it delivers as analog. The person decides all of this, largely in realtime, with the power to then simply hearken to the variations between the alternatives to nail down a most well-liked sound. I don’t know of some other product that does this to this extent, and often not even shut.

In the event you play your streaming companies in the identical crappy 64kbps Pandora enter that started within the 90s, they arrive out of the Professional iDSD as filtered and upsampled DSD1024 (45mbps). Stream your Sensible TV motion pictures and music or your Amazon Prime favourite exhibits and so they get the identical filter + DSD upsample (aka resample or remaster) therapy. Ship your CD/DVD participant audio by means of your Sensible TV by way of HDMI and get the identical enhancements.

Stream your TIDAL Masters MQA library out of your pill or laptop computer and you may hear audio unfolded to 24/384ok with ringing corrections on each the encoded (grasp) and decoded (DAC) facet. Play your native DSD as much as DSD1024 (wi-fi DSD64 as DoP, USB wired in any other case). DSD64, DSD128, and DSD256 supply masters may also be upsampled to the upper DSD bitrates.

Use the DLNA or AirPlay or Google Forged connections to ship all of your music out of your smartphone to the Professional iDSD by way of dependable and prolonged distance WiFi. No extra Bluetooth woes! Have your MP3 and CD music filtered by means of iFi’s revolutionary and efficient GTO filter to work by means of a few of the identical PCM ringing issues as MQA does earlier than DSD resampling and changing to analog to your headphones.

Take pleasure in a tube-warmed preamp sound for all of it!

The final word media refactoring merchandising machine.

A lot of the music chances are you’ll already play comes from a telephone or pill streaming from companies like Spotify, TIDAL, Pandora, Bandcamp, Apple Music, Qobuz, Deezer, all or any of them, at completely different instances. Utilizing iFi’s Professional iDSD DAC and headphone amplifier or studio (tube or digital) preamplifier you’ll hear your music tackle new depths and readability and pure sounding traits you in all probability have by no means heard earlier than with your personal music libraries. To my ears, the digital reproductions enjoying by means of the Professional iDSD all appear to again off and simply let me pay attention. There aren’t any battles between what my ears hear and the way my mind receives the music. It flows pure and easy.

You don’t want a pc to listen to this. It might come from the identical smartphone you play music on on a regular basis. Overlook Bluetooth, go WiFi. It’s a cleaner, bit good transmission (additionally overlook about aptX and different compatibility complications) and and not using a 30 foot restrict (which it by no means is) earlier than it stutters and drops and waits and drives you loopy. I’ve decried the virtues of WiFi audio over Bluetooth for years and now I’ve it earlier than my very ears.

The music might additionally come regionally saved as downloads or ripped CDs out of your pc (pill, laptop computer, desktop) linked by way of WiFi or by way of USB to the identical iFi Professional iDSD and sound once more higher than you’ve heard it earlier than. The participant might then be Roon, JRiver, Audirvana, Amarra or others.

Why will it sound higher?

If you’re used to streaming lower than bit good CD high quality music from Pandora (64ok free, 192ok paid, lossy), Spotify (Free as much as 160ok and Premium as much as 320ok, lossy), TIDAL (Premium 320ok, or HiFi 16/44.1 to 24/96 lossless), Qobuz (Premium 320ok lossy, Hello-Fi 16/44.1, Chic as much as 24/192ok lossless), Bandcamp (as much as 256ok lossy), Apple Music (as much as 256ok lossy together with Mastered for iTunes), your entire lossy MP3 and AAC streaming music will be correctly filtered to deal with pre- and post-ringing echoes that make digital music sound unnatural, after which get upsampled to DSD1024 (or DSD512) by the Professional iDSD after which output as analog (by way of analog tube preamp!) to your headphone/audio system with extremely improved sound high quality and listening pleasure.

All this could occur over WiFi in your house directed from a smartphone.

Calmly depress a Professional iDSD knob to immediately go from “No DSD Remaster” to “DSD Remaster DSD512″ and then once more to advance to ” DSD Remaster DSD1024″. If you’re curious why the remaster (aka upsample, or resample) improves the sound, first I say you must simply hearken to it. DSD remastering by means of oversampling has been on the coronary heart of most digital audio gamers since chances are you’ll be stunned to know the earliest transportable digital gamers and recorders that includes 1-bit then 4- or 5- or 6- or thereabouts bit DSD (delta-sigma) converters. I’m saying that the center of PCM digital to analog playback in business shopper gear has been an in depth DSD cousin all alongside, because the 90’s. The Professional iDSD is a high-level Cadillac model of that root strategy.

I like to consider DSD as a digital illustration of an analog wave, equivalent to you’ll see on an oscilloscope. This strategy (Pulse Density Modulation) is as a lot as 1024 instances the pattern charge of CD. Describing the analog wave in binary storage is a really non-destructive approach to reproduce the sound later by means of a DSD DAC. The high-sample-rate DSD conversion (remaster) of PCM masters additionally makes the consequence sound extra analog like and pure to my ears. That’s why I’ve at all times most well-liked to document to DSD within the first place, at any time when potential. Now the power to remaster the whole lot (besides MQA) to the best DSD bitrate is available in a really good wanting Four pound package deal.

Learn some excessive stage skilled dialogue on this by the chief creator of the iFi and AMR merchandise: https://www.audiostream.com/content/qa-thorsten-loesch-amrifi

Previous to resampling the music supply you may apply an iFi software program invention referred to as the Gibbs Transient Optimized (GTO) Digital Filter. I really feel strongly this can be a true landmark breakthrough for playback of non-MQA PCM digital masters and streaming music. I additionally use their Bitperfect+ filter possibility instead. Rotate the knob on the entrance panel of the Professional iDSD anytime to vary the filter getting used (they provide 5 decisions) and to listen to the variations in actual time inside the identical music.

What I hear with the GTO Filter and DSD resample is a big enchancment within the width of the sound stage, separating the devices and giving them far more pure sounding assaults (impulse) and decays (maintain). The edgy sound of digital audio a la CD high quality which has plagued my ears because it was launched round 1981 is not edgy. It’s all of the sudden an actual sound, as if folks have been really enjoying the devices I’m listening to within the room I’m sitting in. Singing and respiration are equally extra relaxed and pure sounding. I additionally hear distinct enhancements on this identical route between the DSD512 and DSD1024 remasters, preferring DSD1024 as essentially the most pure. Some music I’ve listened to by means of the Professional iDSD sounds finest to me utilizing their Bitperfect+ filter as a substitute of GTO. I would want to proceed listening to and evaluating these filters to determine when and why one filter might excel in pure sounding outcomes over one other and if there may be any consistency to their completely different makes use of.

I need to add right here my desire for the Tube swap choice within the Professional iDSD, as a result of as soon as once more there are distinct pure variations to my ears between how deployment of the J-FET all-valve Class A output that includes two GE5670 tubes heat the ensuing sound (of often acoustic or ambient fashion music genres as my desire) and get my vote over strong state or the Tube+ (added pure harmonic distortion) alternate decisions. Slide the swap on the entrance panel anytime to immediately hear these variations.

All of that is primarily based on the premise of working with a very good recording and manufacturing grasp within the first place. However in all equity, many recordings that sound crappy by means of regular CD participant setups, will sound improved and even good by means of, say, a Spotify or TIDAL stream of them (MP3-320 or lossless 16-44.1) into the Professional iDSD streaming DAC/preamp. I’m beginning to consider this activity carried out as audible cleanup, a collection of steps (highest DSD resample, finest filter, tube preamp) that ship simple to listen to enhancements on the sound delivered to your audio system or headphones.

It’s within the Apps

I’ve used quite a few music participant apps on my iPhone to manage playback by means of the Professional iDSD, it being set in its “Apps” mode by means of a entrance panel knob collection of inputs. Once more these apps are usually not delivering audio by way of Bluetooth, which isn’t current in any type on the system. Wi-fi audio is at all times 802.11 WiFi, which has been sorely neglected by the digital music shopper product producers, and largely neglected by prosumer and studio gear makers. One other vital matter for one more day.

Probably the most full resolution I’ve discovered for iOS and Android as a music participant able to offering entry to the person’s libraries of music on-line, together with TIDAL and Qobuz, in addition to saved music on the telephone, Dropbox, iCloud, or OneDrive is named mconnect from Conversdigital Co., Ltd. This app actually connects any music/video/photograph media server to any UPnP or Google Forged (Chromecast) system.  It performs MQA Masters on TIDAL as effectively. Voila!

With that app in hand, I can join my iPhone to the Professional iDSD as UPnP and log into my TIDAL or Qobuz account and stream MQA or some other music to the studio playback. I may ship my Apple Music library of albums saved on the iPhone itself to the identical vacation spot together with MQA playback. (Please be aware right here that not like what others have mistakenly claimed, MQA is just not an audio format which is technically known as a codec. MQA is an encoding that may be utilized to any of the widespread lossless PCM audio codecs out there, the preferred being FLAC, ALAC (Apple compressed lossless), WAV and AIF. That is vital as a result of I can obtain MQA masters as 24/44.1 or 24/48ok ALAC recordsdata and even Apple Music/iTunes will acknowledge them and retailer them on my iPhone with out even realizing they’re MQA!) All of this occurs over WiFi permitting me the liberty of transferring wherever I’m linked together with open air.

A video by Owen Delehedy at iFi Audio on how you can setup mconnect for playback by means of the Professional iDSD is on-line at:  https://www.youtube.com/watch?v=zkv0_2JAdEA

You will need to use the paid model of mconnect, not the Lite model. It additionally doesn’t help Spotify accounts, however the Spotify app can run concurrently on the telephone with mconnect participant and so they cooperate. iDSD detects MQA Masters from TIDAL and decodes as much as the total 24/384ok relying on the decision of the supply recording being streamed.

mconnect app can direct play of DSD and FLAC from the telephone as effectively, and helps Gapless playback. It should run on iPhone, iPad, Android telephone and pill. It additionally helps AirPlay-compatible gadgets Apple TV, Airport Categorical, AirPlay Audio. You may render on Sensible TV, and different UPnP supported Audio and receivers.

You may create mconnect Playlists that include songs from any mixture of servers you’re linked to. What? Sure, you may combine your varied music libraries throughout servers by creating playlists selecting from all or any libraries.

Along with mconnect participant, different apps I’ve linked to iDSD from my iPhone utilizing AirPlay or DLNA embrace Spotify, Bandcamp, Onkyo HF Participant, HiBy, Qobuz, TIDAL.

Beware – AirPlay is lossless to 16/44.1k—so your hi-res and presumably MQA received’t stream by way of WiFi beneath AirPlay intact. DLNA help by gamers like mconnect can do higher than that and may protect DSD in addition to MQA encoding. My MQA masters are folded to 16/44.1k so they’re preserved completely effectively beneath the lossless supply of TIDAL or Qobuz to my iPhone utilizing mconnect, then WiFi over to the iDSD by way of Airplay and unfolded and decoded to the stereo. “It sounds just like you are playing in the room” was what a listener with good ears mentioned instantly.

These albums streaming to iPhone from each the Qobuz app in addition to mconnect (TIDAL library) as 44.1k lossless, then despatched by way of WiFi Airplay to the iDSD the place they’re acknowledged as MQA with DXD decision (24/352.8k) and accordingly unfolded and decoded, despatched to the Tube preamp then out to a Yamaha amp and Polk Audio stereo audio system setup within the room. Word that the streaming bitrate for the assorted songs are within the 700-800kbps vary as FLAC! That’s roughy 1/2 of the bitrate of a CD (1411kbps). MQA’s tech advances in delivering the best res PCM with correction for ringing on the lowest bitrates is an enormous a part of what makes the previous 2 years in pc audio so unbelievable. 700kbps streamed into your telephone or pc turns into approx. 17340kbps (24/352.8k) unfolded and performed by means of the MQA DAC. I really like the maths.

Rediscover your music simply by listening.

What MQA Encoding and the iFi Professional iDSD streamer DAC GTO filter have in widespread is the power to appropriate the largest drawback with PCM recordings, particularly the CD 16/44.1k format we’ve all needed to reside with for too lengthy. Each MQA and GTO filter applied sciences come from two completely different firms who’ve in truth collaborated, and assist clear the sound you’ll hear in your digital music in cooperative methods. After I say “clean the sound” I’m referring to the issues with PCM and the trade’s decades-old (assume 1980) requirements for preferring to favor frequency accuracy over timing and spatial accuracy. This was accomplished, and continues to be accomplished by the trade studios and labels, even supposing our ears are far more delicate to the timing and locality of sound than to frequency.

By implementing the favored brickwall filter on CD within the earliest implementation of CD, Sony and Philips imposed the burden of what’s referred to as pre- and post-echo ringing results on all digital music listeners. The ringing artifacts are most extreme on CD decision masters (16/44.1k), after which proceed to lower with the upper decision masters (24/88, 24/96, 24/176, 24/192, 24/352, 24/384ok).

Ringing is a distortion added to the digital audio sign that echos the impulse (accentuated instrument’s be aware or singer’s voice or drumbeat you’re listening to) a number of instances earlier than you ever hear the be aware/voice/beat itself come by means of the sign to your ears. Pre-echo ringing means an echo earlier than the be aware is performed. Even worse, the echo is an inverse unnatural sound like a tape being performed backwards.

Publish-echo ringing are these following the impulse. Whereas each (pre- and post-echoes) are complicated to the ear/mind/listener, it’s the pre-echo ringing results that throw off our listening and make our ears drained and disbelieving in what they’re listening to. Echoes off a wall in a room are widespread and pure to our ears. The post-echo ringing artifact is just like that and so much less invasive to our listening.


Ringing occurs over and time and again with typical PCM masters, extra so with the decrease decision masters (CD is 16 bit/44.1k) than the upper res masters (as much as 24 bit/384ok within the DXD class), due to the maths associated to the steepness of the brickwall filter attenuating all frequencies above a hard and fast restrict (on CD that is at 22.05ok or half of the 44.1k pattern charge). By attenuating the frequency by means of the lowpass cutoff filter, echoes are imposed earlier than and after the impulse. The severity of echoes will change with the kind of filter used, therefore brickwall versus minimal part versus apodizing versus the brand new iFi GTO (Gibbs Transient Optimum) filter.

Extra data right here from SoundOnSound.com: MQA Time-domain Accuracy & Digital Audio High quality

My Grandson Baseball Analogy

Think about you’re watching your grandson completely crouched over dwelling base with baseball bat raised in anticipation of the pitch now being delivered. You see ball delivered and also you see your grandson start to swing. However simply earlier than the bat reaches the ball you assume you hear the sound of the bat connecting, not a full impression however a shadow of that sound enjoying backwards. In reality you may need heard it twice or extra instances in fast succession. Instantly after that you simply see the bat join with the ball after which hear the resounding smack!  Immediately all is effectively, however what did you hear earlier than the bat struck the ball?

Your eyes noticed the bat had not linked to the ball however your ears heard premonitions (echoes) of the ball to be hit. Then a break up second transpired (the distinction between the pace of sunshine at your distance and the pace of sound) and also you heard the acquainted and anticipated resounding crack of a very good swing connecting for a terrific hit. It could have been adopted by tiny echoes of the occasion, however these have been masked to your ears by the primary impulse occasion of the ball being hit.

You don’t know what you heard because the shadow of the primary impulse occasion. Your mind didn’t know what your ears have been listening to.  These echoes didn’t exist in the true world. It didn’t occur on the sector along with your grandson. It was a phantom sound that threw you since you anticipated to listen to nothing from the bat and ball till after he really hit the ball. (I’ve additionally examine a priority issue within the human ear/mind that claims our location recognition of sound is programmed to disregard echoes that might in any other case confuse us as to the place a sound originated from after bouncing off quite a few partitions, flooring and ceiling inside a room. If that’s true, then the impact of pre-echo ringing is even worse on our disorientation of what we are attempting to hearken to in digital music. Extra on that right here…)

My baseball analogy is just not even describing the entire drawback as a result of it places the listener in a vision-oriented scenario which usually influences some 80% of our sensory notion. So imaginative and prescient in my instance is partially correcting the audio drawback by deciphering for the mind/viewer what is admittedly happening visually. Nonetheless after we hearken to music from our favourite armchair or tatami mat we will’t use our imaginative and prescient to appropriate distortions in what we’re listening to. We’re targeted as a substitute on the distortions and spatial discrepancies of what we’re listening to. It may be exhausting irritating work. Issues referred to as ear fatigue, digital glare, edgy unnatural sound are what we then endure from.

Ringing and Filters

Welcome to the world of pre-echo ringing also called time smearing and temporal blurring. My instance of the baseball batter is the analogy of what we’re subjected to with the standard CD high quality digital playback that was recorded and mastered with shut consideration to frequency accuracy not time accuracy. These issues are equally true or worse for MP3 and any lossy derivatives of CD masters. These pre-echo ringing artifacts are created in the course of the analog to digital transformation of sound beneath Pulse Code Modulation (PCM) processing. They’re created to a a lot lesser and carefully or totally inaudible diploma by different methods together with DSD’s use of Pulse Density Modulation (PDM).

To this finish PCM trade recordings are often made with what are known as linear part brick-wall (or “brick wall” or “brickwall”) filters to perform their finest makes an attempt at analog to digital conversions with the 20kHz vary of human listening to being catered to, and different “noise” above 22.05kHz (half the worth of the 44.1k pattern charge per Nyquist) sharply eliminated. By avoiding aliasing, ringing is launched. It’s at its worst in CDs, and fewer so within the greater decision, well-made studio recordings at 24/96 and better pattern charges. The artifacts of this filtered strategy to exacting solely most well-liked frequencies desired are the ringing artifacts then imposed on either side of the impulse itself (pre- and post-echo ringing). MQA addresses and corrects this drawback, as does iFi’s new GTO Filter. (Extra from Stereophile in 2006 on this right here…)

Much more (from Audiostream) on ringing and why DSD doesn’t document with this drawback…

Different filters have been launched over time primarily known as mininum part (or apodized, or pay attention filters) that may take away the pre-echo and place the complete burden on the post-echo facet of the impulse which isn’t as intrusive to our listening since we’re accustomed to listening to and adjusting to post-echos as sound reflections off partitions and so forth.  As soon as once more, iFi’s GTO filter is a complicated strategy to resolving these ringing issues for any supply digital audio together with MP3 and different lossy streaming or downloaded recordsdata, equivalent to what iTunes has been promoting as AAC lossy downloads since 2003 when the shop opened with 200,000 songs.

Why WiFi?

Lastly and massively importantly, a unbelievable possibility for enter on the Professional iDSD is what they consult with as “App.” The Professional iDSD acts as a DLNA server in your WiFi community. Apps such because the Spotify (lossy) and TIDAL (lossless) gamers in your pc or smartphone can see the server when you set it up (use a passworded encrypted protocol!) and connect with it for audio output. So the Professional iDSD is your midpoint between your wi-fi pc or smartphone and your web service supplier by means of your regular WiFi router. It talks to either side.

Your iPhone/Android telephone is not hampered by poor sounding, poorly linked, extremely irritating Bluetooth that you must sit close by to remain linked to. As a substitute your telephone sends the sign by way of WiFi to the Professional iDSD as a wonderfully preserved digital sign the place it then will get transformed to analog. You may stroll wherever in your house, and even exterior the place WiFi reaches, and keep completely linked. iFi bought it proper. I’m amazed at how lengthy it has nonetheless taken wi-fi digital audio emigrate to Ethernet the place it ought to have originated from within the first place as a substitute of a sketchy lossy, dropout-prone protocol like early and protracted Bluetooth.

Anybody utilizing the Sonos Join product similarly will instantly perceive the musical and logistical advantages of this. The Sonos product doesn’t nevertheless help MQA as iFi’s product does.

All the supply enter no matter the place it comes from will be simply resampled as DSD1024 on its approach to your stereo. Will you hear the distinction? I truthfully can’t think about anybody listening and never listening to these variations. I’ve offered these comparisons in actual time to different non-audiophile ears and the outcomes have been on the spot and affirmatively higher with the correct filter and DSD1024 resample. My ears discover additionally discover it immediately preferable.

MQA avoids DSD resampling on the Professional iDSD and will get correctly unfolded and decoded as much as the best bit charges (24/352.8k and 24/384ok) for analog supply to your headphones or audio system.

Your TV performs by means of it too…a fairly rattling large deal

I can’t cease writing concerning the Professional iDSD with out telling you you could additionally simply hook up the optical Toslink cable out of your Sensible TV as one other audio enter (Coax/Toslink S/PDIF). It will route your television’s audio by means of the identical lovely cleanup course of (GTO or Bitperfect+ filter -> DSD1024 -> Analog Tube preamp -> balanced or unbalanced Analog output) as I’ve described for different sources like streaming MP3. Will probably be upsampled to DSD1024 if you happen to want. By the way in which, DSD1024 is a 45 to 49 mHz single bit charge. How far we’ve come.

In case you’re questioning, sure there’s a BNC connector (S/PDIF in or sync enter) in addition to a Micro SDHC and USB A to attach for instance your 2TB USB drive along with your whole music library or smaller thumb drive to. Right here is the Professional iDSD person information, see web page Four for all inputs and outputs…

Since my take a look at setup CD/DVD participant was linked to the LG Sensible TV by way of HDMI, all CD and DVD audio additionally went by means of the identical Toslink cable into iDSD. Easy. Sounds nice. On this setup Amazon Prime (each music solely in addition to 4k and different movies) additionally comes by means of as resampled DSD1024 transformed to analog sign by means of the Tube preamp to a Yamaha amp and out to a pair of classic Polk Audio audio system within the room.

Briefly, iFi Audio’s Professional iDSD is a unbelievable and revolutionary addition to at this time’s revolving doorways of media enjoying gear and software program. IFi’s merchandise have at all times made massively spectacular impressions on me, however the Professional iDSD is a brand new journey to a brand new universe with all of the sound high quality I’ve been looking for discover for fairly a couple of many years within the digital area.

What’s Subsequent?

Take pleasure in Take pleasure in Take pleasure in…

“So much work still needs to be done before we can have confidence in asserting what can be heard and what cannot be heard.” – Thorsten Loesch

…it doesn’t must be…


Professional iDSD performs downloaded DSD512 and DSD1024 recordsdata solely by way of a USB wire linked, not by means of WiFi.

On various events I misplaced the Professional iDSD WiFi connection, or, barely extra complicated, my supply system seemed to be streaming music to the iDSD however no sound got here from the audio system. Often this was attributable to a mysterious zero quantity all of the sudden imposed on the iPhone, because it’s not a Bluetooth connection to iDSD it’s both off or on by way of quantity management, however zero quantity yields precisely that, no sound, from the amplifier & audio system. Different instances, I needed to flip off the iDSD unit and energy it again as much as restore an entire audio path to the home stereo. It appears to often lose the WiFi supply connection it helps, at the least so far as streaming audio. This didn’t occur usually, however usually sufficient to notice right here.


  • Pattern charges: PCM as much as 768kHz. DSD as much as 49.152MHz (DSD 1024). DXD and double-speed DXD (2xDXD)
  • Inputs: USB (required for DSD, DXD and pattern charges above 192KHz). AES3 (XLR – single hyperlink). S/PDIF (coaxial/optical combo). BNC multifunction (S/PDIF in or sync enter)
  • Outputs: Balanced XLR at 4.6V (+15.5dBu – HiFi) or 10V (+22dBu – Professional). Single-Ended RCA at 2.3V (HiFi) or 5V (Professional). Headphones 6.3mm & SE 3.5mm Jack at 0.55V/2.1V/5V. Headphones BAL 2.5mm/4.4mm Jack at 1.13V/4.6V/10V. Headphones out 1,500mW RMS X 2 @ 64 ohm, 4,000mW max. 2 X @ 16 Ohm
  • Headphone Output Impedance: Single-Ended (S-BAL): < 1 Ω
  • Balanced: < 2 ΩVolume management: Balanced (6-gang) Alps potentiometer, motorised with IR distant management
  • XLR/RCA outputs will be chosen as mounted stage or adjusted, 6.3mm headphone jack is at all times adjusted
  • Different Features:Numerous digital and analogue filters will be chosen for DSD and PCM as much as 384KHz
  • PCM Filters: Bitperfect 44.1 – 192kHz, at all times used for 352.8 – 768kHz. Bitperfect + 44.1 – 96kHz. Gibbs Transient Optimised 44.1 – 384kHz. Apodising 44.1 – 384kHz
  • Transient Aligned 44.1 – 384kHzDSD filters: mounted third order analogue filter @ 80kHz with correction for DSD’s -6dB acquire
  • Achieve (headphone part): user-selectable: 0dB, 9dB and 18dB
  • Dynamic vary: 119dBA (solid-state, PCM, -60dBFS)
  • Output energy Professional iDSD 4.4mm socket. (16 Ω, balanced/single-ended): >4200mW /1>1,575mW. Professional iDSD 2.5mm socket. (16 Ω, balanced/single-ended): >4000mW /1>1,500mW
  • Output voltage(600Ω, balanced/single-ended): >11.2V / >5.6V
  • Enter voltage (Professional iDSD): DC 9V/6.7A – 18V/3.35A
  • Enter voltage (iPower+): AC 85 – 265V, 50/60Hz
  • Energy consumption: < 22W idle, 50W max.
  • Dimensions: 213 (l) x 220 (w) x 63 (h) mm
  • Weight: 1980g (4.37 Ibs)

Images by David Elias, or courtesy of iFi.

Related Posts