IDEON Audio Absolute / ION / EOS / AYAZI

Some of you may have heard about this pretty amazing Greek company. They were quiet popular some time ago with their pretty neat USB-Reclocker.

Since 2y they also get some more attention in the higher-end DAC community, refer to Ideon Audio | What's Best Audio and Video Forum. The Best High End Audio Forum on the planet!

As I’m very happy owner of Grimm Audio MU2, 2 unique & outstanding Vintage-/Tube-DAC’s from Abbas Audio and recent purchased Antipodes K22 G4. I thought I go for a finale frontier HiRes-DAC based on ESS Sabre ES9028-PRO (was quiet happy with my Weiss 501 MKII some time ago).

I watched ION Audio since last year, but the targeted ION DAC for €16k was for my opinion too expensive for an ESS Sabre DAC. Once I saw several engineering talks and also how they have modified the firmware itself with ESS directly for their needs, that catches my attention. Also, their USB research and hardware is for sure one of the best industry (Taiko-level) :wink:

Long story short: unfortunately a Hifi friend got sick and had to resell also his 3-month-old ION DAC, I jumped in and got it for a good price. Also purchased their USB Siren cable and yesterday I received it and today first hearing sessions through my Antipodes K22.

  • Yes, for sure some high resolution DAC, but not so aggressive clinically as the latest WEISS 501. It is a bit more lay back, not like the usual R2R, but quite impressive! Interesting to see Ideon’s balance between “analogue-like-sounding” vs “high-resolution-detailed-sounding” DAC

  • I know why some review comment on his “bass” representation, yes ION produces a large soundstage and bass is nicely refined, but not over it.

  • I’d say it is a pretty damn good combination: IDEON Audio ION + USB Siren + Antipodes K22 (using it as roon bridge only)

Drawbacks: Settings in the menue are badly implemented/complete user-unfriendly, for some too dark display brightness, only having: 1x S/PDIF , 1x BNC, 1x USB - at least you can connect 2 amp/pre-amp (XLR or RCA)

For sure at one point I’ve to test it against my MU2, but I doubt it can beat it together with my Antipodes K22 - different sound. Also, in direct comparison with Abbas Audio HERMES Sig + K22, I don’t want to miss my Abbas!! His presentation of Jazz/Vocals in a full-range chain are so pure musical - if you love Tube-DACs, must hear!

Some impressions:






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Since we have a dedicated thread I’d like to jot down what the Ideon Absolute time brings to the table consistently in the various systems I have used it in to date.
Deeper soundstage, front to back. Thus far no matter the DAC and amp combo, HP or speaker use the depth of stage has been deep with added resolution to imaging, instruments, and vocals. Using excellent quality USB or even mediocre quality SPDIF the consistency in the depth perception and the added benefits that come w/ it have been repeatable. With HP use in particular and an R2R based DAC I have found a sweet spot that hits my own personal preferences in the spatial qualities presented that brings me extreme joy and listening pleasure despite the fiscal imbalance in every such combination I have put together.
The Ideon device reclocks and regenerates the streaming signal to the best of my understanding and well mastered recordings all seem to benefit w/ appreciable results via the transducers. Clean power, clean source, clean transmission of stream equates to a transparent source your DAC, amplifier and transducers can then color to their best abilities :man_shrugging:. That’s my uneducated but experienced opinion using my equipment, my ears and my perception of its performance.
Happy listening all, YMMV based on your own experiences :hugs:

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Some day, I will pry that Absolute Time from your clutches.

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I think you dont need to go up so high, ION is already pretty close :wink: of course everyone needs to decide to go for the last 2% :wink:

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Listening update, 1week intense listening:

  • I’m quite impressed, was not expecting those kind of signature from an AKM-based DAC
  • the combi with Antipodes K22 (Roon-bridge only) + the Ideon Siren USB are really an impressive good synergy
  • tonal balance is really good, bass is extraordinary refined (not overdone) and makes me smile on certain reference songs

Ideon have done a damn good job on their filter stages!

Is it better than my Grimm Audio MU2?

  • yes, if you are somone looking for bigger soundstage and forward-playing
  • MU2 still is a extrem enjoyable longplay-monster (but not so relaxed as some R2R) and Ideon for sure is adding a bit more to the sound and therefore more strenuous to listen in my case after some hours. Never happened with Abbas Audio or MU2!
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I’m planning something to do with an Absolute Time, it has usb in and out, spdif in and out. Can it take spdif in and output usb? Or it should be the same in and out?

If yes, are both spdif out and usb out on at the same time or there is some sort of selector?

And my voltage question :stuck_out_tongue: , is it universal or region specific?

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No, sadly it’s that fact that kept me picking one up. @NickMimi has one, maybe he can answer the voltage question.

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@M.J There is NO voltage selection ability that i can find externally on my Ideon Absolute Time unit.
You can only use USB or SPIDIF regeneration specifically it is NOT a converter from one form to the other. Yes there is a button on the front of the unit for power And possibly to separate between USB or S/PDIF use but I have no way of testing this theory currently so i cannot do the experiment for you at this time.

I’ve actually considered getting a SACD player someday simply to maximize the use of the SPDIF connection available.

Let me know if you need more pictures or have any questions but personally i would reach out to Ideon directly, especially concerning the voltage. It is made in Greece and sold in Europe thus i’m sure the voltage question is common and i’m thinking most likely a non-issue since it does NOT specify voltage on the unit itself. See attached pictures


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Thank you.

I reached out to them and they said the transformer’s voltage is region specific.

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The Ideon ION Dac is an interesting animal.

I can’t really write anything meaningful right now because I’m still in transition mode and have to move things around as my previous pair of XLR were 3 inches too short. It’s a natural pause ATM so I’ll take some internal pictures etc.

The USB hardware and software are where Ideon is clearly making the most gains on. I’ve never seen a USB board like this one.

Funnily enough I’ve realized that my last experience with Delta Sigma DAC was probably a Gheshelli LABS. lol. I kid but close, I think the last real DS DAC I guess would have been an Amber 3.

Anyway, initial impressions are that this DAC is on a different level than anything else I’ve heard in my home before.

The USB implementation is impeccable. Like I mean Absolute Time level of impeccability as it sounds as good with USB in directly from the Lumin U2 as the Mojo EVO Pro sounded being fed BNC from the Lumin through the Absolute Time and BNC into the Mojo. If someone wanted to plug a streamer in and call it a day, that would be more than acceptable for 95% of the audiophiles out there in the world.

Of course my OCD would NOT allow that, I’ve got an Ideon Absolute Time in the house, I’m going to use it. I’ve got one GOOD USB cable and one $150 one. Even with the mismatch in the USB level of cables the sound filling my small room with this level of digital upstream is bewildering.

I won’t go into detail now but did one to add one thing since people talk about the bass on this DAC as being a standout. The most succinct way of putting it, this DAC does to bass what the Final Audio D8000 Pro does. It leaves you with that kind of impression.

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This DAC is a good opportunity to write up an actual article and also show off your photogrophy skills :pinched_fingers:

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Here you go Nick, some nice morning light here. Will write up a bit on the impressions thus far this weekend.

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I’m also happy with the Ideon, even I jump now between: Grimm MU2 & Abbas HERMES Sig.
As with your Devore’s it will be a good combi.

As I’m using YG Acoustics Carmel 3, with damn clean Soulution 725 and clean-fast Linneberg Mono’s. it is sometimes to revealing for vocals and Grimm MU2 or Abbas can be more enjoyable for listening longer than 3+ hours.

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I was thinking just that when you wrote about it in WB.

The hobby is about synergy and yes I’d agree the DeVores are a perfect match for it. My Voxitiv would have been painful with it. Now that I’ve had it a bit I was going to write more about it, but like I originally said, your assessment is pretty much what I’d say. lol

Although taking the next step with it, via the Absolute Time, takes it to another level.

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Fully agree! When used with my Cube Audio Lotus FR it was also too much…

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It’s about time I wrote down my thoughts on the ION +. First lets get the ugly out of the way, I have no desire of using its preamplifier function but I bought what I bought and its there, so maybe for another chain. My Backert Labs Rhythm is everything I needed and pairs very well with the Firstwatt F8.

The software on this thing needs some getting used to. Partly because it’s a bit… whatever the opposite of intuitive is. But partly because it doesn’t work precisely as the documentation says it does and just extends the learning curve unnecessarily. An example of this is if you hang the scrolling a hair too long on the factory reset… well the unit does a factory reset, after you spent fifteen minutes setting it up, and you spent fifteen minutes setting it up because of the kludge un-intuative menu. Lather, rinse, repeat. I was also a bit confused because the DAC displays a volume and I was trying to have the volume fixed at 0 dB and it always defaulted back to -62 dB. It let you got back into the menu and set the default back to 0 dB. Lather, rinse, repeat, but I come to find out the volume is for the pre out which I’m not using, hence again, it doesn’t matter but more unnecessary shoulder shrugging and head scratching time spent here.

The reality is that since I’m using it as a DAC only, I simply have to set it and forget it and none of this matters much, thus I left it all back at the river.

That out of the way, this DAC is the best DAC I’ve ever heard and it should be given the $25k retail price. That said, dealers need to make a living and that retail price is always pumped to the gills, where the reality is that this was normally sold for around $16 to 18K. That’s still a major chunk of change. I was fortunate enough to strike a great deal from a dealer who was transitioning out of the Ideon line and so the real story begins here.

The first thing people seem to comment on is the bass, and I’m not going to deviate from that because it is striking. I use that word because it’s unlike bass I’ve heard from other DACs previously. It’s different and that difference is immediate. I’ve already mentioned here in the forum that it reminded me of listening to the Final Audio 8000 Pro, and the bass that headphone puts out, it had a similar effect on my chain. It has texture, a very low level texture that you’d swear is impossible to be hearing, but you are. The grip on that bass, it’s nothing left to chance, all with immediacy and control and again a texture that’s most often associated with a “beautiful” midrange is now clear and present it the sub bass. It’s not sweet, not dry, not excessive, everything feels balanced impactful and correct.

I’m a firm believer (at least in the way I hear) that subwoofers add dimentionality to the music, they provide you with information about the room and clearly the harmonics of that low level sub bass have a appreciable effect further up the spectrum to be able to do that. So a DAC like the ION wins in what it does to the amount of information you’re hearing on anything below 500 Hz for sure. It’s very tangible and at least in my chain, intoxicating. The space where the music is being presented is sharper and boundaries are farther and more clearly defined than anything I’ve ever heard in my small room before.

Moving on the the rest of the sound, the best way to describe what the ION does in my chain is balance. The DAC combines the best aspect of the Weiss 501 I had and the Mojo EVO pro I’m moving on from and that’s a tough trick to pull off. Walking that line of perfect balance between too much coloration and too clinical a signature that can be present in the chase of detail. Both the Mojo Pro and the Weiss did this to a fair degree in their own way, but it was never like what the ION is showing me.

I’m hearing sound at a level of presentation that is simply beyond anything I’ve heard previously and I was surprised by it. Back up vocal chorus singers are all individuals now singing in harmony rather than a block of voices. There are subtle clues and low level micro details presented that I have never heard before, going back they are clearly there but I’d never “heard” them. They didn’t stand as individual contributors in the recording. But it’s never too much, it’s always just the right amount. There is never “too much” of anything during its presentation as well as never feeling like there is “not enough” of something. The image is focused but not sharp, the layering is spcious but not artificial, the depth and width are always the right size for the recording. No big ten foot talking head, or exaggerated placement of singer or instrument that feels wrong compared to the rest of the presentation. It’s organic without feeling colored and immediate without sounding harsh. It excels with anything percussion for certain, cymbals, bells, glass al sound exactly as they should.

This has been somewhat of an impulsive buy on my end, one that I really think I didn’t need, but at the same time has shown me how much more there is or can be presented in a well balanced chain by continuing to move up the digital source ladder.

Now for the technical, the guys at Ideon are doing something with timing that is very proprietary. I’m not going to pretend I know what, but at a high level, they’re using two separate ESS DAC, the first one is simply part of their USB input implementation and they’re writing proprietary code and using it to buffer and time align the input before sending it out to the DAC, which is the second ESS DAC. They’re also using some proprietary software to control the flow and once again align the timing between the two in total there are four femto clocks. Two on the USB input, one on the daughter board with their controller SW and one right next to the DAC itself. Apparently all of the SW on the DAC is writen by Ideon with a propriety implementation of separation of the load on the ESS DAC clearly being used to lower the amount of work/processing. Every clock is surrounded by a very heavily regulated power section.

The reason I say all of this is to illustrate the net effect. When I first got the DAC I didn’t have two quality USB cables so I used the BNC reclocking of the Ideon Absolute Time and it was very impressive, but nothing as earth shattering as I would have expected. Given the reading I’d done on the ION’s USB implementation I knew that was the way to go. So after receiving a quality USB cable from @NickMimi I tried the USB directly from the USB output from my Lumin U2 directly into the ION.

That surprised me, and I wasn’t ready for it. The sound was better via that input than it was via the Absolute Time feeding the ION via the SPDIF input via SPDIF. It was as if a $14K DDC wasn’t even a factor. It just was a better input source coming from the USB out of the Lumin. (no slouch of course) but still… I just wasn’t ready for the difference.

After that, I immediately sold the pair BNC cables, got a hold of a second USB and put the Absolute Time back in line, this time via USB. … … …nirvana, just simply audio joy. I can’t even begin to explain the leap in performance so I’ll end it here.

Did I need this in my life? No. Now that I’ve heard the impact, how much it has elevated my listening experience, not only in technicalities but in a pure immersive and convincing presentation. A presentation that transforms me to where the music is playing, a joyous experience. F’it it’s only money and I would have died without having experienced this. Worthwhile IMO.

In summary, this is a very balanced DAC, that excels in macro and micro detail and dynamics. Has texture in spades and has a very convincing presentation of music in the correct space with the correct dimensions and boundaries. It’s a bit laid back and a hair relaxed in presentation in my chain. I could very easily see this as @gerihifi mentioned being a bit too much detail with a different driver pairing. A club sounds like a club, a hall sounds like a hall and it takes on all genres with aptitude.

Keep on listening boys and girls.

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Should be carved into a mountain.

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