Audio-Technica ATH-IEX1
The ATH-IEX1 pairs fast, weighty bass with excellent transparency, delivering an airy, holographic listen when its balanced cable is in play. MajorHifi highlights its clean separation, sparkling yet controlled treble, and secure lightweight fit—an energetic hybrid IEM for listeners who prize precision, speed, and expansive imaging.
WATT RECOMMENDS
Save your favorites. Compare them anytime.
Create a free HiFi Hub account to save products to your Wishlist and compare your favorites side by side.
Nicely Roasted
Sound Quality
87/100
Fit Comfort Isolation
91/100
Build Accessories
88/100
Value for Money
76/100
Pros
Fast, tasteful bass combines punch, grip, texture, and solid sub-bass extension.
Balanced operation delivers excellent transparency, clean separation, and a holographic soundstage.
Light titanium shells provide a secure, comfortable fit with effective passive isolation.
Cons
Prominent upper mids can make vocals overly forward and guitars, brass, or percussion sound harsh.
The unbalanced cable sacrifices some cleanliness and definition versus the balanced connection.
Its $1,200 price was considered difficult to justify given the tonal compromises.
WATT RECOMMENDS
Save your favorites. Compare them anytime.
Create a free HiFi Hub account to save products to your Wishlist and compare your favorites side by side.
What Reviewers Are Saying
SOUND QUALITY PERFORMANCE 87/100
The ATH-IEX1 is described as clean, tight, highly transparent and spacious, with particularly strong bass control and separation. Its main tonal drawback is an assertive upper-midrange that can push vocals too far forward and become grating with certain instruments.
Bass
90/100
Major HiFi describes the bass as generous but tasteful, fast and satisfying, with good grip and texture on acoustic strings and pop music. Sub-bass response is also said to be solid, supporting a full low-end foundation without reports of looseness.
Midrange
78/100
Vocals are reported to sit very far forward while the lower midrange can recede into the background. The reviewer found the upper mids shouty, with electric guitars and trumpets sometimes becoming grating.
Treble
88/100
Treble is described as airy, buoyant and detailed, with crisp sparkle that brings out strings and brass. Despite the energetic presentation, Major HiFi felt it stopped short of outright fatigue.
Resolution Separation
90/100
The review praises clean separation and an excellent level of transparency, with classical strings sounding substantive and realistic. The balanced cable was said to improve separation further, though it also made the upper-mid emphasis less forgiving.
Soundstage Imaging
89/100
With the balanced cable, the IEX1 is said to create a holographic soundstage through its strong separation. Distant upper-midrange instruments retain color and definition, contributing useful width to the presentation.
Dynamics Coherence
86/100
Major HiFi specifically praises the IEX1's tight, controlled overall sound. The reviews offer little further detail on large-scale dynamic swings or driver integration across demanding material.
FIT COMFORT ISOLATION PERFORMANCE 91/100
The lightweight titanium design is reported to fit securely, remain comfortable over extended listening, and isolate very effectively. Available silicone and foam tips should also help listeners tailor the fit.
Seal Stability
91/100
Major HiFi found the light shells and design provided a very secure fit. No seal loss, bass variation, or stability problem was reported during use.
Comfort
91/100
The reviewer reported no comfort complaints and said their ears did not feel worn after a couple of hours. Crinacle's also notes that the titanium coaxial housing helps keep the IEM low in weight.
Isolation
91/100
Major HiFi had no complaints about isolation and found outside office conversation effectively blocked out. This indicates strong passive attenuation for everyday indoor use.
Assessments of Build Quality, Usability, and Overall Propositions.
Build Accessories
88/100
The IEX1 uses lightweight titanium housings and includes both 3.5 mm single-ended and 4.4 mm balanced detachable cables. The supplied silicone and Comply foam tips in multiple sizes, plus a hard carrying case, provide a genuinely useful fitting and ownership package.
Value for Money
76/100
At its $1,200 price, Major HiFi considers the IEX1 very expensive for a product it views as less than outstanding. Its strong technical qualities are therefore tempered by a difficult premium-price justification.
Reviews & Sources
Professional reviews and sources for this product's Watt'n Potatoes analysis.
Online Reviews & Mentions
YouTube Reviews
No reviews found yet
Forum Mentions
No forum mentions found yet
Specifications
- Headphones
- Hybrid
- Type
- 9.8 mm, 8.8 mm, two balanced armatures
- Driver Diameter
- 5 – 50,000 Hz
- Frequency Response
- 3 mW
- Maximum Input Power
- 102 dB/mW
- Sensitivity
- 5 ohms
- Impedance
- 19.0 g (0.7 oz) (without cable)
- Weight
- Detachable 1.2 m (3.9') cable (4.4 mm, 5-pole balanced connector to A2DC); detachable 1.2 m (3.9') cable (3.5 mm, 3-pole stereo mini-plug to A2DC)
- Cable
- Silicone eartips (XS/S/M/L), Comply™ foam eartips (S/M/L), cleaning cloth, and hard carrying case
Manufacturer's Description — Audio-Technica
ATH-IEX1
Featuring a hybrid multidriver system, the ATH-IEX1 in-ear headphones deliver smooth, natural sound reproduction across the entire frequency range, with the capacity for reproducing Hi-Res Audio. Contained within the headphones’ solid titanium housings are dual phase drivers of different diameters (9.8 mm and 8.8 mm) plus two balanced armature drivers, positioned on a coaxial line. The 9.8 mm works as a full-range driver, while the 8.8 mm functions as a passive radiator to strengthen the lower frequency. Those two units face each other, their diaphragm movements syncing to minimize distortion and provide audio that is true to the original sound. The balanced armature drivers act like super tweeters to contribute accurate, high-frequency reproduction.
Featuring a hybrid multidriver system, the ATH-IEX1 in-ear headphones deliver smooth, natural sound reproduction across the entire frequency range, with the capacity for reproducing Hi-Res Audio. Contained within the headphones’ solid titanium housings are dual phase drivers of different diameters (9.8 mm and 8.8 mm) plus two balanced armature drivers, positioned on a coaxial line. The 9.8 mm works as a full-range driver, while the 8.8 mm functions as a passive radiator to strengthen the lower frequency. Those two units face each other, their diaphragm movements syncing to minimize distortion and provide audio that is true to the original sound. The balanced armature drivers act like super tweeters to contribute accurate, high-frequency reproduction.
The elegant, ergonomic housings are crafted through a five-step process: They are cut from solid titanium, forged, machined using a precise CNC machining process, carefully hand-polished, and given an anodized finish. The result is lightweight, rigid housings that greatly reduce unwanted resonance for the highest sonic purity, and that fit comfortably and securely in the ear. The two-position eartip post on each housing allows for customized positioning of the eartip for an even better fit.
The headphones are equipped with A2DC (Audio Designed Detachable Coaxial) jacks to accommodate the two included 1.2 m (3.9') detachable cables. One is a star-quad cable with a standard 3.5 mm, 3-pole stereo mini-plug. The signal and ground wires are stranded separately for the left and right channels to suppress cross talk and isolate the signal from external noise. The second cable is equipped with a 4.4 mm, 5-pole balanced plug for use with high-resolution digital audio players and balanced-compatible headphone amplifiers. Both cables include a titanium plug sleeve to reduce unwanted vibration, and are designed to loop comfortably and securely over the ears.
The ATH-IEX1 headphones come with four sizes of interchangeable silicone eartips (XS/S/M/L), three sizes of Comply™ foam eartips (S/M/L), a cleaning cloth, and a hard carrying case. Each pair is individually identified by a laser-etched serial number.
About High-Resolution Audio
While many listeners may believe that high-resolution audio came along with the introduction of the Compact Disc in 1982, constraints on the disc’s storage space always prevented CD audio (standardized at 44.1 kHz/16-bit) from fully and completely reproducing the original recorded sound. The advent and subsequent popularity of MP3s only made this problem more pronounced – the necessary compression of these files causes audio information to be lost, thus greatly reducing the audio quality. But with lossless audio file formats, faster Internet speeds, and storage space increasingly easy to come by (and in ever-smaller packages), the push is on to create audio equipment capable of capturing and reproducing true Hi-Res Audio, generally considered to be 96 kHz/24-bit or better. The Hi-Res Audio logo certifies that a product meets the Hi-Res Audio standards. Per these standards, headphones must have transducer frequency performance to at least 40 kHz. As a producer of these types of audiophile headphones since 1972, Audio-Technica is well-positioned to provide audio solutions that meet the demands of Hi-Res Audio media formats, allowing for the full reproduction of their extended sonic characteristics.
ATH-IEX1
Featuring a hybrid multidriver system, the ATH-IEX1 in-ear headphones deliver smooth, natural sound reproduction across the entire frequency range, with the capacity for reproducing Hi-Res Audio. Contained within the headphones’ solid titanium housings are dual phase drivers of different diameters (9.8 mm and 8.8 mm) plus two balanced armature drivers, positioned on a coaxial line. The 9.8 mm works as a full-range driver, while the 8.8 mm functions as a passive radiator to strengthen the lower frequency. Those two units face each other, their diaphragm movements syncing to minimize distortion and provide audio that is true to the original sound. The balanced armature drivers act like super tweeters to contribute accurate, high-frequency reproduction.
The elegant, ergonomic housings are crafted through a five-step process: They are cut from solid titanium, forged, machined using a precise CNC machining process, carefully hand-polished, and given an anodized finish. The result is lightweight, rigid housings that greatly reduce unwanted resonance for the highest sonic purity, and that fit comfortably and securely in the ear. The two-position eartip post on each housing allows for customized positioning of the eartip for an even better fit.
The headphones are equipped with A2DC (Audio Designed Detachable Coaxial) jacks to accommodate the two included 1.2 m (3.9') detachable cables. One is a star-quad cable with a standard 3.5 mm, 3-pole stereo mini-plug. The signal and ground wires are stranded separately for the left and right channels to suppress cross talk and isolate the signal from external noise. The second cable is equipped with a 4.4 mm, 5-pole balanced plug for use with high-resolution digital audio players and balanced-compatible headphone amplifiers. Both cables include a titanium plug sleeve to reduce unwanted vibration, and are designed to loop comfortably and securely over the ears.
The ATH-IEX1 headphones come with four sizes of interchangeable silicone eartips (XS/S/M/L), three sizes of Comply™ foam eartips (S/M/L), a cleaning cloth, and a hard carrying case. Each pair is individually identified by a laser-etched serial number.
About High-Resolution Audio
While many listeners may believe that high-resolution audio came along with the introduction of the Compact Disc in 1982, constraints on the disc’s storage space always prevented CD audio (standardized at 44.1 kHz/16-bit) from fully and completely reproducing the original recorded sound. The advent and subsequent popularity of MP3s only made this problem more pronounced – the necessary compression of these files causes audio information to be lost, thus greatly reducing the audio quality. But with lossless audio file formats, faster Internet speeds, and storage space increasingly easy to come by (and in ever-smaller packages), the push is on to create audio equipment capable of capturing and reproducing true Hi-Res Audio, generally considered to be 96 kHz/24-bit or better. The Hi-Res Audio logo certifies that a product meets the Hi-Res Audio standards. Per these standards, headphones must have transducer frequency performance to at least 40 kHz. As a producer of these types of audiophile headphones since 1972, Audio-Technica is well-positioned to provide audio solutions that meet the demands of Hi-Res Audio media formats, allowing for the full reproduction of their extended sonic characteristics.
A Sound Connection
Since 2015, Audio-Technica has used the specially designed A2DC (Audio Designed Detachable Coaxial) connector on all of our in-ear headphones and select over-ear headphones with detachable cables. But why did we develop this connector and what makes it perform better than existing connectors in audio applications?
Verified Dealers
Online Dealers
All Dealers
Zoom out the map to see more dealers
Authorized dealers for Audio-Technica ATH-IEX1
- The Audio Association — in-store — Anaheim, California, United States (website)
- A1 Futureshop — online and in-store — North Rocks, New South Wales, Australia (website)
- Absolute Audio - Canada — in-store — Calgary, Alberta, Canada (website)
- Abt Electronics — online and in-store — Glenview, Illinois, United States (website)
- Accesory Jack — online and in-store — New Territories, Hong Kong (website)
- Acclaim Sound and Light — online and in-store — North Bay, Ontario, Canada (website)
- Acoustic Sounds — online and in-store — Salina, Kansas, United States (website)
- Acoustic Technologies — online and in-store — Montréal, Québec, Canada (website)
- Acton Gate Audio — online and in-store — Cymru, United Kingdom (website)
- Adorama — in-store — New York, New York, United States (website)
and 235 more verified dealers