Audio-Technica ATH-R70xa Review: Lightweight Open-Back Headphones for Professional Listening
The Audio-Technica ATH-R70xa is an updated version of the popular ATH-R70x and aims to deliver a natural, balanced sound signature with improved detail resolution and refined acoustic performance.
Thanks to its fully open-back design, the ATH-R70xa provides an authentic open soundstage while minimizing distortion. With a weight of only 199 grams and a redesigned headband construction, the headphone is built for long and comfortable listening sessions, particularly in professional environments.
Despite these strengths, several technical aspects of the new model deserve a closer look.
High Impedance Limits Mobile Use
One of the most striking specifications is the 470-ohm impedance.
This extremely high impedance means the ATH-R70xa is not suitable for direct use with mobile devices and generally requires a dedicated headphone amplifier to reach its full performance.
For studio setups this may not be a problem, but it makes the headphone impractical for portable listening scenarios.
Dual-Sided Cable Connection: A Professional Drawback
Another unusual design decision is the dual-sided cable connection.
Unlike the common industry standard where the cable enters from the left earcup, Audio-Technica routes the cable into both sides of the headphone.
While this may have technical reasons, it introduces a practical disadvantage:
The user can no longer immediately recognize the correct orientation of the headphones.
For professional users who frequently put on and remove their headphones during a workday, this lack of quick orientation can be inconvenient.
Lack of Balanced Connection
Despite its professional positioning, the lightweight ATH-R70xa is equipped only with an unbalanced connection.
This may benefit the aftermarket cable industry, but from a user perspective it appears somewhat limiting.
A balanced connection often provides clear sonic advantages, especially in high-resolution listening environments.
By comparison, the ULTRASONE Signature FUSION Open Back — another open-back headphone — includes a balanced cable with a 4.4 mm Pentaconn connector in the box. This allows users to immediately benefit from improved signal transmission and enhanced sound performance.
Balanced Connectivity Is Becoming a Trend
Balanced headphone connections are increasingly common in professional audio equipment.
Even Sony, whose open-back professional model is considered a trendsetter in the Japanese market alongside ULTRASONE, offers the option of balanced connectivity for improved performance.
Given this trend, the absence of a balanced option on the ATH-R70xa feels like a missed opportunity.
My Personal Assessment
Open-back headphones are currently gaining strong momentum in the professional audio market. Following developments from Sony and ULTRASONE, Audio-Technica now enters this space with a technically ambitious product.
However, the ATH-R70xa seems not fully optimized for professional workflows.
Several factors limit its practical appeal:
the dual-sided cable routing
the very high 470-ohm impedance
the lack of a balanced connection
the absence of S-Logic spatial technology, which reduces listening fatigue and improves immersion
S-Logic technology, for example, enhances spatial perception and efficiency while protecting hearing, delivering a more immersive listening experience.
Final Recommendation
While the ATH-R70xa is an interesting addition to the open-back market, the overall design leaves some important professional requirements only partially addressed.
In my opinion, the ULTRASONE Signature FUSION Open Back remains the more complete solution.
It offers:
balanced connectivity via 4.4 mm Pentaconn
immersive S-Logic spatial sound
professional usability
a well-thought-out overall design
For these reasons, the Signature FUSION Open Back from ULTRASONE would be my clear recommendation.
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