Dan Clark Audio
AEON CORE Closed Back Planar Magnetic Headphones
$899.99 USDFeatures
All-new driver engineered for maximum efficiency and low distortion
Tuned to a revised Harman over-ear target developed with Dr. Sean Olive
Bold aluminum and wood aesthetic — a fresh look in the ÆON lineage
Lightweight at just 328g for extended listening comfort
Ultra-low impedance (17Ω) — pairs easily with portable and desktop sources
High sensitivity (~97 dB/mW) for efficient, dynamic playback
Available with premium DUMMER or VIVO cable upgrade options
What's in the Box?
Warranty
ÆON CORE, a new closed-back planar magnetic headphone and the direct successor to the ÆON 2. Not only does ÆON CORE introduce an all-new driver engineered for maximum efficiency, but it’s also Dan Clark Audio’s first headphone tuned to a revised Harman over-ear target developed through research with Dr. Sean Olive. It doesn’t just sound different, it looks different. ÆON CORE sports a bold new aluminum-and-wood aesthetic that preserves the signature comfort of Dan Clark Audio headphones. ÆON headphones have anchored Dan Clark Audio’s lineup since 2017, offering exceptional, affordable planar-magnetic performance. ÆON CORE carries that mission forward with meaningful advances across driver technology, voicing, and the measurement science underlying the tuning itself, delivering a major upgrade to the whole listening experience!
Dan Clark Audio E3 Headphone Review & Comparison
TL;DR:
- A closed-back planar magnetic headphone that defies the genre — DCA's Acoustic Metamaterial Tuning System delivers a soundstage with the airiness and depth you'd expect from an open-back design
- Standout bass articulation and smooth, intimate mids make the E3 one of the most musical closed-backs in its price class, with non-fatiguing highs that never tip into harshness
- DCA's flagship AMTS technology trickles down to a lower price point for the first time, paired with a new 5th-generation driver and Gorilla Glass earcup design
- Harder to drive than most — at 27 ohms and ~90 dB/mW sensitivity, the E3 needs a capable amp to shine
- Foldable, portable, and supremely comfortable at 455g, the E3 is built for long listening sessions on the go without sacrificing premium build quality or sound
Articulate Low End and A Fun Listening Experience
The E3 from Dan Clark Audio set out to do something that most high-end headphone manufacturers can't pull off–deliver closed-back isolation with the speed, depth, and open-air presentation of an open-back headphone. It's a challenge that not many would take on, but for Dan Clark, this was an opportunity to stand out and create something the audiophile community hadn't seen before.
Closed-back headphones have become synonymous with isolation and immersion. Sealed enclosures typically compromise soundstage and airiness. But with a reimagined driver design and DCA's Acoustic Metamaterial Tuning System, Dan Clark has made the "impossible" possible. The Dan Clark Audio E3 Closed-Back Planar Magnetic Headphones shares DNA with the Stealth and Expanse, and frankly, that's a good thing. Why fix what isn't broken? But look closer, and you'll find some genuinely new territory here—both sonically and in materials, with the introduction of Gorilla Glass making its first appearance on a Dan Clark headphone.
Dan Clark E3 Closed-Back Headphones Review & Comparison [Video]
PROS
- Superb low-end articulation and a natural and lively signature
- Non-fatiguing highs
- Super-comfortable, foldable, portable design
CONS
The Dan Clark Audio Experience
Dan and his team follow the principles of "California innovation," with the goal of creating dynamic, streamlined solutions that improve performance without adding complication. Along with a spirit of innovation comes a commitment to the headphone experience. For Dan, it's about more than just the way they sound. It's also how a headphone looks - to how it feels in the hand - to how comfortably it sits on the head.
"Good sound isn’t enough: if your headphones are too heavy, fit weirdly, don’t seal, or clamp too hard, it’s like having a bad seat at a concert," Dan says. "You might enjoy the music, but the discomfort keeps pulling you out of the experience. So for us, it’s balancing sound and comfort to produce headphones you can wear stress-free for hours on end for the most immersive experience we can produce."
Dan likes to ensure that each aspect of his headphones is "purpose-built," with everything being done in-house. Using off-the-shelf drivers, or headbands, or using contract manufacturing would mean making "me too" products, he says -- and that's just not interesting. "We try to bring a unique approach to all aspects of our designs," he says, "to fully control the balance of sound, comfort, and style. Off-the-shelf parts make that much harder.
Design
The teardrop-shaped earcups make a happy return with the new E3. What is seemingly the new staple design of Dan Clark Audio headphones means great things in the world of comfort and long listening sessions. They're larger than the AEON, but roughly on par with both the Stealth and Expanse, with a boxier shape due to the design nature of the flat Gorilla Glass on the exterior of the ear cups.
It should come as no surprise that the E3 is an easy-to-wear headphone, as Dan Clark has always prioritized ergonomic design and long-session comfort. He's often said that if a headphone is not comfortable enough to wear for extended listening sessions, then the design is flawed. The clamp force on the E3 is firm enough to create a proper seal without the jaw fatigue that plagues some closed-back designs over long sessions. Dan Clark also likes to make lightweight headphones, with the Dan Clark Audio ETHER 2 being one of the industry's lightest at 280g. The Stealth comes in at 455g, just a little heavier than the ETHER C Flow and Stealth. It's a negligible difference and still makes for an extremely comfortable fit for long listening sessions.
The E3 retains the convenient folding gimbal design of the Stealth and Expanse, enabling the user to easily stow and transport the headphones in the compact custom-molded case provided. Note: Always be sure to fold both ear cups inward at once. The cups themselves are a carbon/aluminum bonded design, while the body also uses titanium. The ear pads are a composite (vegan) suede and protein leather material.
The E3 also features the same NiTiNol (nickel and titanium) headband wires as other DCA headbands, but the two wires are in a more open, "flying" design rather than strictly parallel. You'll also notice subtle knurling on the metal hardware–a small detail that adds grip and visual texture to the overall build quality. And the headband strap itself is designed differently from pre-Stealth and Expanse models. Instead of adjusting with ratchets or mechanical sliders, the headband features a "self-adjusting suspension system." It's on an elastic that allows it to easily fit any head without needing manual adjustment. It's a cool feature and one of my favorite adjustment mechanisms on a headphone.
The headband itself is black leather with blue stitching, and its quilted surface improves comfort while reducing heat. I love the fact that there is blue stitching on the underside of the headband. It's a semi-secret bit of detail that adds to the appeal of this good-looking headphone. The stitching design itself is quite similar to that of the Expanse, but the top of the headband features the original logos for both the Expanse and E3 respectively.
Sound
Let's go ahead and talk about some sound characteristics. First off, the E3 is a closed-back headphone despite what you might see. What you're looking at here is the grill pattern that actually covered by Gorilla Glass 3. It's a nice design, and Dan Clark himself said that he liked using the glass as a new material aesthetically, especially because it gives off the impression that it's an open-back headphone - and despite not being one, it does have some nice airiness and openness to the presentation that we'll talk more about in a bit. You'll see two holes here as well - these are the dual-mode bass ports. They do well in creating a more controlled articulation of the low frequencies and play a huge role in the overall signature of the headphones.
The big thing to talk about is the fact that Dan Clark brings some of their flagship tech to a lower price point, with the enhanced AMTS tuning system. This system was found previously only on Dan Clark Audio's high-end Stealth, Expanse, and Corina headphones. All the brands have their proprietary technology, right? Meze has the Isoplanar Hybrid Array, HiFiMan has their Stealth Magnets, Focal with their specialized beryllium dynamic drivers, and Dan Clark has the AMTS, or Acoustic Metamaterial Tuning system. DCA's tuning architecture is tailored to each headphone that implements it - since each transducer is original to the headphone model, the tuning is likewise.
All headphones are subject to high-frequency standing waves which can exacerbate things like fatigue and make the treble sound harsh or synthetic. AMTS is a device that is placed between the transducer and ear that integrates waveguides, diffusion control, and resonators - all of which help to eliminate standing waves. This device helps create a sound that's more natural and alive - free from artificial or synthetic artifacts in your audio - it's not so much noise, but more the notion that something is there that shouldn't be originally, or something doesn't sound the way it should. Dan Clark has also revamped the driver design - the new diaphragm is now the 5th generation, featuring an all-new tensioning system for more uniform and consistent performance, and low noise at all listening levels.
Sound Impressions
So all this is to say that the E3 sounds good, right? Color me impressed. I took a long time to find the nuances of the E3 and how it stacks up with other Dan Clark Audio headphones and some other closed-backs at around the same price. I'll try not to get too complicated here, but here's what I heard:
For reference and - my testing setup - I used the E3 with the Matrix Audio TS-1 Streaming Music Server DAC and Headphone Amplifier and a Blue Dragon Premium Cable for Dan Clark Audio Headphones. I also paired it with the Astell&Kern SP3000M DAP for portable listening.
The E3 might be my favorite DCA headphones of the bunch here. It has wonderfully low-end detail - it's precise and articulate - the low-end response is just the first exceptional thing that stands out to me. Come Together by the Beatles - you can hear the trail off of the sustained bass, and the exact moment the signal gets muted. Despite everything else going on rhythmically in that song, it's there. There's a wonderful smooth mids presentation - the vocal range mids are what set this E3 apart from the rest of the headphones here. Reasons Why by Nickel Creek - the vocals are incredibly intimate and close in the mix. The timbre on acoustic instruments is remarkably natural. The E3 has a much cleaner presentation of this than the Liric from Meze Audio for example. It's a touch more in the forefront on the Liric, but on the E3 it's almost like you're hearing a simulated gate on the vocal - you still hear all the detail, the saliva noises - what are those called? Spittle? Sialoquacious? But it doesn't sound as hot or in the forefront. It's cleaner because you're still not missing anything but I imagine the wider soundstage plays a role in providing more room for the vocal performance to stand apart.
So, more articulate and refined low end, smooth mid-presentation, and plenty of detail in the upper mids and highs that analytical listeners will be pleased with, there's a lot to like about the E3. The tuning doesn't chase the Harman target cuve the way some competitor models do. Instead DCA has gone for a more natural, speaker-like presentation that prioritizes musicality and tonal accuracy over measurement-driven tuning. It'll pair well with a ton of genres - Synthwave, Rap, Folk, Alternative, and Rock will certainly shine and sound great on these. Being a Dan Clark headphone, they are on the harder-to-drive side of the spectrum at 27 ohms impedance, but I had no issue driving them with the DX320 music player. Isolation is great as well, so don't worry about cranking these when you're out and about.
Another thing to note is that they are on the more difficult side of efficiency, so make sure you’re using a capable headphone amp. Like all planar magnetic drivers, the more power you throw at them the better they will perform. All Dan Clark headphones are harder to drive: the AEON 2 Noire, the Noire, AEON Flow, AEON 2 Open, and more. Just know that you’re not going to plug these directly into your phone and get phenomenal sound quality.
Come Together
By The Beatles
(Abbey Road)
Reasons Why
By Nickel Creek
(Nickel Creek)
Give Me Back My Girl
By Fiction Family
(Fiction Family Reunion)
Appalachian Spring
By Aaron Copland
(Coplan: The Music of America)
Features
The driver design in the new E3 headphone is the latest update to the driver that was featured in the popular Stealth, which was the 4th generation Dan Clark driver that was built from the ground up specifically for that headphone. They thought they could repurpose the driver from the open-back ETHER 2 into an ETHER C Flow-type chassis, but they discovered this simply wasn't going to work. The ETHER 2 driver just didn't react properly to the dynamics of having a cup behind it.
The new 5th-gen driver in the E3 improves upon the Stealth driver, offering a more natural and lively presentation. The driver uses DCA's patented v-Planar technology to reduce total harmonic distortion and improve low-frequency extension. Additionally, diaphragm tension is set on an all-new system for a more uniform and consistent tension, lower distortion, and better driver matching, while FEA and CFD-optimized motor structures increase driver force uniformly and smooth acoustic paths to reduce distortion.
This 5th-generation driver delivers low levels of distortion and high levels of detail typically associated with electrostatic headphones. But here's the thing: the detail is not achieved through an exaggerated boost in the treble. Instead, DCA's patent-pending AMTS delivers incredible resolution that doesn't suffer from a fatiguing emphasis on the highs.
What is Dan Clark's Acoustic Metamaterial Tuning System?
Metamaterial: A metamaterial (from the Greek word μετά , meaning "beyond," and the Latin word materia, meaning "matter" or "material") is any material engineered to have a property that is not found in naturally occurring materials. They are made from assemblies of multiple elements fashioned from composite materials such as metals and plastics. The materials are usually arranged in repeating patterns, at scales that are smaller than the wavelengths of the phenomena they influence. Metamaterials derive their properties not from the properties of the base materials, but from their newly designed structures. Their precise shape, geometry, size, orientation, and arrangement gives them their smart properties capable of manipulating electromagnetic waves: by blocking, absorbing, enhancing, or bending waves, to achieve benefits that go beyond what is possible with conventional materials. -Wikipedia
AMTS is Dan Clark's solution to the closed-back headphone challenge of standing waves in the higher frequencies, which can make treble sound harsh, fatiguing, or synthetic. AMTS is a device crafted from metamaterials (materials engineered to have properties not found in naturally occurring materials) that is placed between the headphone driver and the ear. This multifunctional structure integrates waveguides, diffusion control, quarter-wave, and Helmholtz resonators into a single small structure. It's so unique that Dan Clark Audio is actually seeking its first global patent for this system.
Think of AMTS as a programmable array of dual-function waveguides. Paraphrased from Dan Clark: When the sound comes out of the driver, it goes through a screen and then enters this waveguide, which orients the wave up toward the ear. This moves your perception of the soundstage down more in line with your ears. When configured correctly, these waveguides become waveguides and quarter wave or Helmholtz resonators. The latter can be used to remove standing waves and resonances that occur within the ear cup cavity.
OK, so what does this mean for the listener? It means treble that is smooth and accurate, and a headphone that delivers tons of detail without relying on boosted treble. Dan Clark says that they should be able to retrofit some of their headphones with this new AMTS technology.
Comparisons
Dan Clark Audio Headphone Comparisons
AEON 2 Closed-Back Headphone
Next, I want to switch to talk quickly about how the E3 compares to a couple of Dan Clark options here that many will be familiar with. First, let's take a look at the Dan Clark Audio AEON 2 closed-back. The AEON 2 leans to the warm side of neutral, with a more present midrange, relaxed treble, and a pleasant punchy bass response. It certainly has a more intimate soundstage than some of the other headphones here, but the E3 delivers a more lively and mature presentation in comparison. You'll find much more definition in the low end for the E3 headphones, but if you like feeling and getting lost in the beats and music, then the AEON 2 closed-back would be a great choice for genres like Blues, Folk, and Country. Classical and Jazz also sound great if you want a more musical interpretation or tuning.
Dan Clark Audio Stealth Headphone
The Stealth and Expanse are on the top of the Dan Clark Audio totem pole with flagship-level sound - the Stealth being the closed-back headphone and the Dan Clark Expanse the open-back. The Stealth is a superb headphone for just about any occasion. Balanced sound, smooth yet highly detailed, relaxed, clean, nicely placed mids, deceptively wide soundstage, and a sound that is beautifully natural and organic. Design-wise the E3 takes a lot of cues from the Stealth, with the same updated folding mechanism, amazing comfort, and quality materials. They're both sleek-looking headphones to be sure, but they'll serve very different purposes I think - primarily with their sound and of course not to mention the price difference. The Stealth leans much more to the analytical side of things than the E3, with a plethora of detail and clarity. I was surprised that even the HD820 had a touch better bass response than the Stealth, but the thing that excels here is that the high frequencies are not fatiguing at all - thanks in large part to the AMTS. I personally preferred the E3's bass articulation, but if you like to pick out every single detail in your music, then the Stealth is one of the best headphones out there for it.
Other Headphone Comparisons
Meze Audio Liric Headphone
Let's compare some non-Dan Clark Audio headphones here. First up I want to take a look at what I think is the natural competitor here: the Liric from Meze Audio. It's no surprise that I'm a huge fan of Meze - I love their designs, their sound, and tuning. All of it. It's one of our favorite closed-back planars here at Moon Audio. The price-to-performance ratio is superb in our opinion and it's a stellar-looking set of cans.
There are some nuanced differences between the two when it comes to the signature, however. The Liric is certainly a warmer presentation overall, providing more low-end response and resonance, yet not nearly as articulate as the E3. That's one of the biggest differences here. The mids are much smoother on the E3 whereas they're a little more forward and edgier on the Meze Liric. Vocals will be more in the forefront and exposed. The soundstages are similar, but I would say the imaging is actually a touch more precise on the E3 due to the smoother mids and more defined low end. Precision is the E3's trump card on the Liric. If you're looking for a warmer presentation with more clarity on the top end, then the Liric will be for you. The detail is still superb on the E3, but the Liric has the advantage with analytical listeners only if you're looking for hotter high-mid frequencies.
Sennheiser HD 820 Headphone
The other non-DCA headphones I want to take a look at is the Sennheiser HD820 - a closed-back dynamic in the close-to $2000 USD range. Right off the bat, the HD820 is going to be one of the best headphones on the market for analytical listeners. For those who like an exorbitant amount of clarity and detail, the Sennheiser house sound is a detail freak's dream come true. And, like the E3, sports a Gorilla Glass covering on the outside of the earcup and chamber.
The HD820 has the superior soundstage and imaging of all the headphones in this review. It's phenomenal - wide and expressive, the only other headphone with a soundstage to match is the Meze Empyrean. The HD820 has a lot in common with the Dan Cark Audio Stealth in my opinion, with a more analytical leaning, with a touch more bass than the Stealth. There's a nice bite in the details that makes it great for electric guitar tones, and the larger earcups help deliver a sense of a larger space in and around the head in which the soundstage lives. In comparison, the E3 is much closer but still presents a wide soundstage at least horizontally. The HD820 has accuracy for days on the high-end frequencies, and the E3 in comparison has it for the low end. The HD820 will be the choice for those who like to pick out every single detail with a tight and snappy bass response that's not too light, but certainly won't be the choice for bass heads. The HD820 was a touch easier to drive than the E3, and I found the E3 to be the superior headphone in terms of comfort.
Dragon Cables
For my testing session, I paired the E3 with our Blue Dragon Premium Cable for Dan Clark Audio Headphones. The Blue Dragon Cable is a wonderful way to add clarity without coloration to your favorite audiophile headphones. With the neutrality of the Black Dragon and the clarity of the Silver Dragon, the copper-based Blue Dragon will "clean" the sound of your headphones without warming or brightening it. You can think of the Blue Dragon like a wipe for your eyeglass lenses: You're removing obstructions to the best view but not altering your prescription.
Our HiFi Audio Dragon Cables bring out more of what you love in your music and audio gear. If you love your headphones but wish they had a bit more top-end sparkle - a Silver Dragon Headphone Cable would be a great option. If your USB cables keep dying - as many stock cables do - then check out our quality USB Audio Cables. We say time and time again that materials matter, and our audio cables and custom geometries actually help to bring out those desired properties in your gear and music. We make tons of custom options for our customers so that you can get the right HiFi Audio cable for your exact needs. If you have any questions feel free to Contact Us and we'll be more than happy to help.
Verdict
The E3 from Dan Clark Audio is one of the most exciting headphones I've heard in a while. Every now and then, you try something new out and you're like...."whoa." That was this experience in a nutshell for me. Dan Clark headphones are popular for a reason, and the E3 is going to please a lot of audiophiles out there. The definition and articulation at the bottom are a high point in the E3 listening experience, and the smooth mids and clarity in the top make for an incredibly enjoyable and comfortable listening experience every time I put these on. Rock, R&B, Blues, Synthwave, Folk, - it all sounds lively, fun, and resolute through the E3. The other big takeaway for the E3 is the fact that DCA brought their high-end AMTS technology to a lower-priced headphone. No longer is their best tech reserved for flagship-level headphones. This is a great thing for audiophiles everywhere.
I'm a big fan of these headphones and I think a lot of you will be too. Dan Clark headphones are typically a bit more difficult to drive than others, and while I was able to power these sufficiently with the DX320, just keep in mind that they'll perform better the more power you throw at them. I would not recommend pairing these with a DAP like the entry-level Astell&Kern SR35 - opt for something with more power. It'll go a long way to providing much better audio quality when you're on the go. The other lovely thing about Dan Clark Audio headphones is the design - apart from being extremely comfortable, they are also super-portable. The folding mechanism is sturdy, strong, and feels premium. Great job yet again, Mr. Clark.
Featured Products
Related Videos
Dan Clark E3 Closed-Back Headphones Review & Comparison
Open vs. Closed Headphones: What's the Difference?
Dan Clark Audio Stealth Headphones Review
What's in the Box
-Cable
-Travel Hard Case
-Cable Bag
Specifications
| Parameter | Specification |
|---|---|
| Physical Specifications | |
| Model | Dan Clark Audio ÆON CORE |
| Type | Closed-Back Over-Ear Headphone |
| Weight | 328 g |
| Headband | Titanium with self-adjusting suspension strap |
| Ear Cup Finish | Anodized aluminum with dark gray wood finish |
| Ear Pads | Signature AEON earpads |
| Origin | Designed and assembled in San Diego, California, USA |
| Technical Specifications | |
| Transducer Type | Planar Magnetic |
| Driver | All-new high-efficiency planar magnetic driver stack — engineered for efficiency, tonal consistency, and unit-to-unit reliability |
| Impedance | 17 ohms |
| Sensitivity | ~97 dB/mW |
| THD (Total Harmonic Distortion) | < 0.1% ref 80 dB White Noise |
| Recommended Amplifier Power | 125 mW or more into 16 ohms (minimum) |
| Tuning Target | Revised Harman Over-Ear Target (developed with Dr. Sean Olive; corrected for GRAS measurement systems) |
| Connectivity Specifications | |
| Cup-Side Connector | DCA standard locking dual-entry connector (compatible with AEON, STEALTH, EXPANSE, and CORINA series) |
| Included Cable | 2 m DUMMER cable (buyer-selected termination) |
| Available Terminations | 1/4" with 3.5mm adapter (single-ended) 4-pin XLR balanced 4.4mm balanced |
| Optional Upgrade Cable | VIVO cable (available in multiple lengths and terminations) |
| Additional Information | |
| Predecessor | Dan Clark Audio ÆON 2 |
| Source Compatibility | Portable DAC/amps, USB-C dongles, desktop amplifiers, digital audio players |
| MSRP | $899.99 USD |
| SKU | CORE |