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Dan Clark Audio (MrSpeakers) AEON Flow

Open-back planar magnetic headphones (3.5mm connector with 1/4" adapter)

Item # 724AENFLWO

Open-air sound with surprisingly strong and detailed bass.

Open-air sound with surprisingly strong and detailed bass.

Discontinued item

Item # 724AENFLWO

About the Dan Clark Audio (MrSpeakers) AEON Flow

Open-air version of an underground hit

The closed-back AEON Flow headphones are one of the best sealed-back models I've ever tried. This open-back version is just as special. It features the same look, build-quality, and cutting-edge planar magnetic drivers. The big difference is the stainless steel grill that allows more air to move in and out.
MrSpeakers AEON Flow Open

The open-back MrSpeakers AEON Flow headphones deliver a smooth sound with solid, detailed bass.

Open-air version of an underground hit

The closed-back AEON Flow headphones are one of the best sealed-back models I've ever tried. This open-back version is just as special. It features the same look, build-quality, and cutting-edge planar magnetic drivers. The big difference is the stainless steel grill that allows more air to move in and out.

My first impression

I've just started listening to this open-back version, but like what I've heard so far. While they don't offer the isolation of the closed-back model, they do offer a slightly more spacious sound. The bass is also surprisingly strong and detailed for an open-back headphone.

Who is Mr. Speakers?

I met company founder Dan Clark — THE Mr. Speakers — at CanJam NYC 2018. Dan is an interesting guy. His passion for headphone-making is only rivaled by his love of music. He's as quick to drop a story about his favorite band as he is to break down his patented TrueFlow™ technology (more on that later).

He told me that while he uses the latest technology and measurement instruments available, he also takes a more "gut-feeling" approach to his craft. "I don't consider myself done with a set of headphones," he said, "until I hear a familiar song through them, and it moves me in a new way."

The origin story

Dan is a longtime audio engineer who made a name for himself by modifying other manufacturers' headphones. Hardcore headphone enthusiasts appreciated his semi-"outlaw" approach, and really loved Dan's sound improvements.

Capitalizing on the buzz, Dan started his own brand, MrSpeakers. He gathered some talented people, and they began building headphones from scratch in their San Diego shop. Those early MrSpeakers planar magnetic headphones earned rave reviews, and their reputation has only grown.

The company's latest top-of-the-line ETHER Flow and ETHER C Flow headphones are on many "Best of" lists. Those two models informed the design of these AEON Flow headphones. They use the same specially designed planar magnetic drivers. Modern manufacturing techniques like 3D printing helps them deliver premium high-end performance at surprisingly low prices.

A new take on planar magnetic headphones

Planar magnetic designs can get complex, but the basic physics behind them are pretty simple. You have a super-sized diaphragm moving lots of air, resulting in spacious sound with better dynamics. The diaphragm is covered with a flexible circuit and trapped in a magnetic field. It moves when the circuit receives an audio signal.

MrSpeakers added a new wrinkle to this traditional design. Or perhaps more accurately, a few creases. Rather than using a completely flat diaphragm that can bounce back and forth rigidly, their V-Planar™ drivers use a more fluid-moving pleated diaphragm. This accordion-like pattern helps it start and stop quickly, pushing more air. You can really hear the extra presence on tracks with complex bass.

Lightweight and efficient

To move a diaphragm this large, most drivers have a magnet array on both sides. That's why planar magnetic headphones sound great, but are usually heavy and bulky. The V-Planar drivers use a single-sided magnet design, so they are efficient enough to plug directly into a phone. (Of course, they'll really shine when you drive them with a more robust headphone amp.) Plus they feel lighter than any other over-ear planar headphones I've ever worn.

Smoother airflow around the magnets

MrSpeakers also includes their TrueFlow™ waveguides on either side of the magnet array. These special baffles help reduce turbulence in the airflow. This lowers distortion and makes for effortless, natural sound.  

without Flow
Airflow around planar magnet arrays can get messy...
Paradigm PW600
... so MrSpeakers added the TrueFlow waveguides to reduce turbulence.

Incredible build and comfort

The six-foot, soft-fabric-covered cable connects to each earcup using a heavy-duty locking system. A simple adjustment of the leather inner headband will correctly position the teardrop-shaped earcups. The nickel-titanium outer headband is strong, extra-flexible, and it helps everything slide into place.


Product highlights:

  • over-the-ear, open-air design for natural, transparent sound
  • planar magnetic drivers offer enhanced dynamics and rich, detailed sound
  • designed, built, and tested in San Diego, CA
Driver Details:
  • V-Planar™ driver technology offers exceptional musical detail with low distortion
    • powerful single-sided magnet for greater efficiency
    • large, folded planar diaphragm acts as an accordion that "squeezes" more air as it moves
  • TrueFlow baffles reduces turbulence of air moving through the driver
    • enhances dynamics and extends frequency response
  • a separate headphone amplifier is required to properly power these headphones for optimum sound quality
Build Quality:
  • durable aluminum frame and earcups
  • stainless steel grille with hexagonal openings for optimal airflow
  • thick, memory-foam earpads lined with protein leather
  • super-light, flexible NiTinol "memory metal" headband for easy fit
  • single-sided headband slider for easy adjustment
  • The lightest over-ear planar magnetic headphones we carry
General Info and Specs:
  • 6-foot detachable, fabric-covered cable with a 3.5mm miniplug
  • screw-on 1/4" adapter
  • micro-fiber cleaning cloth
  • hard-shell carrying case
  • sensitivity: 93 dB
  • impedence: 13 ohms
  • weight: 11.8 ounces
  • warranty: 2 years
  • Our 60-day money-back guarantee

What's in the box:

  • Over-ear headphones
  • 78" DUMMER cable (3.5mm plug)
  • Screw-on 3.5mm-to-1/4" adapter (installed on cable)
  • Hard-shell zippered storage case
  • 4 White felt inserts (2 installed in ear cups)
  • 2 Black foam inserts
  • Cleaning cloth
  • Quick User Guide
  • Certificate of Authenticity

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Dan Clark Audio (MrSpeakers) AEON Flow reviews

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More details on the Dan Clark Audio (MrSpeakers) AEON Flow

Mark G.

Features & specs

Fit Style Over-the-ear
Earcup Type Open
Earcup Width x Height 3.314" x 4.749"
Noise-canceling No
Bluetooth No
Bluetooth Version ---
Mic For Taking Calls No
Voice Assistant Access
Amazon Alexa No
Google Assistant No
Siri No
3.5mm No
1/4" Yes
Lightning No
4.4mm balanced No
XLR4 balanced No
2.5mm No
Other None
Frequency Response Not Given
Sensitivity 95 dB
Impedance 13 Ohms
Weight 14.4 ounces
Cord Length 78"
Parts Warranty 2 Years
Labor Warranty 2 Years

Product Research


Overview: The MrSpeakers ÆON Flow (Open Version) is an over-ear planar magnetic headphone. Its open design lets in ambient sounds, so it's more like listening to a pair of speakers in a room. These audiophile-grade headphones feature V-Planar and Trueflow technologies, and are precision crafted to deliver superb performance. Their low impedance (13Ω) and higher efficiency (95dB/mW) makes them significantly easier to drive with a smartphone or tablet. For best performance, you should use a high-quality headphone amplifier with the headphones.

Note: The ÆON Flow Closed Version is also available for those who wish to shut out external noise while they listen to music.

Planar Magnetic Drivers: The ÆON Flow uses planar magnetic drivers which deliver much better performance over standard dynamic drivers. The result is more balanced sound with a wide open soundstage.

Tuning: The ÆON Flow headphones come with tuning materials to let you customize the sound of your headphones. Three pairs of pads are provided for inserting in the ear wells of the headphones. It is recommended that, instead of going back and forth, you should listen to each option over an extended time to fully understand the differences. The tuning pads are as follows:

  • Black: This black foam ear pad is the most porous and provides the least amount of damping. The foam pads increase the upper bass output and tone down the highs a bit.
  • White 1-notch: The white felt ear pads with a single identifying notch are pre-installed in the headphones. They provide a medium amount of damping.
  • White 2-notch: The white felt ear pads with dual notches have the most amount of damping of the three sets of pads.

Construction: The ÆON Flow headphones features genuine carbon fiber ear cups to house the 62mm x 34mm (2.44" x 1.34") planar magnetic drivers. Two thin NiTinol memory metal bands hold the ear cups together, and provides the right amount of pressure on the head. NiTinol is a Nickel Titanium metal alloy that returns to its original shape, even after being severely bent. The soft dyed leather headband lies softly on the top of the head while the leather-covered foam ear pads provide a good seal to isolate a lot of the outside noise. The outer portion of the earcups features a window showing the carbon fiber weave pattern, framed in midnight blue/black metallic paint.

Ear Pads: The soft memory foam ear pads provide comfort for extended listening sessions. The inside D-shaped cutouts for your ears are spacious (1-5/8" wide x 3-1/8" high), and angled for a more secure and comfortable fit.

DUMMER Cable: The MrSpeakers ÆON Flow comes with the 6.5' detachable DUMMER (Distinctly Un-Magical) cable, which features a 3.5mm plug with a screw-on 1/4" adapter. The fabric-covered Y-type cable features 4-pin connectors on the headphone end.

Storage Case: The headphones come with a black molded, hard-side, clam-shell case for storing your headphones (with the cables removed). The case has a 3-sided zippered closure.


  • Impedance: 13Ω
  • Efficiency: 95dB/mW
  • Ear Cup Dimensions: Width 3.314" x Height 4.749" x Depth 2.221"
  • Weight: 14.4 ounces

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