By aspect — in detail
Tonality
Strong consensus · 8 srcThe core point of agreement: a neutral / reference-style tuning that leans gently warm and reads as unfatiguing. Multiple rigs put the whole midrange close to flat, and even the critical and skeptical voices describe it as 'neutral, leans warm.' It's a studio-neutral sound in the HD 600 / HD 650 family, not a coloured or fun one.
“the ATH-R70x has quite a neutral-reference style tuning”
Fc-Construct, Headphones.com
“the sound of the ATH-R70x is relatively neutral and absolutely unfatiguing, even for hours at a time”
Tape Op
Measured
Sonarworks measured 50–6000 Hz within roughly ±1 dB; Headphones.com (GRAS 43AG) reads the upper mids on-target with a minor upper-bass/lower-mid bump for a slight warm tilt; ASR confirmed good target compliance between 100 Hz and 4 kHz.
Soundstage
Strong consensus · 5 srcA near-universal highlight and the headline reason people reach for it: open, spacious and immersive for a dynamic driver — several rank its staging above the HD 600 and Sundara. The one nuance is that it's immersive rather than enormously wide, so it doesn't throw sound far outside the head the way some big open-backs do.
“The staging of the R70x is where this headphone separates itself from its contemporaries.”
Fc-Construct, Headphones.com
“It's also a bit easier to drive, has better dynamics, and a bigger soundstage.”
DistortingJack (Gearspace)
Imaging
Strong consensus · 4 srcRated even higher than the soundstage — widely called the R70x's strongest technical suit. Sources praise precise, pinpoint placement and a coherent, centred image with no dead zones, which also makes it a favourite for gaming and positional audio.
“For instruments not strictly centered in the mix, the stereo accuracy is outstanding.”
Fc-Construct, Headphones.com
“Imaging is precise, with a strong phantom center surrounded by a wide soundstage.”
Tape Op
Consistently praised: a natural, present midrange that makes vocals easy and pleasant, with the whole midrange measuring close to flat. The lone caveat, from the measurement-leaning camp, is that the recessed mid-treble can leave vocals a touch 'stuffy' or undefined for those who want more bite.
“The midrange structure of the R70x makes vocals a highly pleasant and easy-to-listen experience for both male and female vocals.”
Fc-Construct, Headphones.com
“upper bass and whole midrange will sound spectacular, very close to perfectly flat even before calibration”
Sonarworks
Sources split on the low end. Everyone agrees it's not a basshead headphone — sub-bass rolls off and quantity is polite — but not on whether that's a strength or a shortcoming. One camp hears deep, textured, well-extended bass that beats the HD 600/650; the other hears it as lean, rolled-off and 'wooly' or undefined, short on midbass punch. The split tracks what a listener wants and their source.
Measured
Headphones.com (GRAS 43AG) shows a sub-bass roll-off below ~60 Hz with no midbass elevation; Tape Op hears usable output to ~22 Hz for an open-back; ASR measures high low-frequency distortion that rises with a bass boost, so there's little headroom to EQ the low end up.
⚠ vs. listeners — The camps aren't disputing the graph — the sub-bass roll-off is real. They disagree on valence: 'deep and textured for an open-back' vs 'lean and wooly,' which genuinely shifts with the music, the seal and how much power is on tap.
Where it splits
Deep and textured — excellent extension for an open-back, with a better low end than the HD 600/650.57%
“Low-frequency extension is exemplary for an open-back design, and I can clearly discern fundamental notes down to 22 Hz.”
Tape Op
Lean and undefined — rolled-off sub-bass and soft, 'wooly' midbass with little punch.43%
“Bass is obviously lacking and we have a trough around 4.3 kHz.”
amirm, Audio Science Review
Broadly gentle, but a real split on how it reads. Measurements show a recessed mid-treble (a dip around 4–7 kHz) with an upper-treble bump near 8–9 kHz. Most hear the result as smooth, relaxed and non-fatiguing — even a touch dark; a minority notes an Audio-Technica-style brightness or grain up top that keeps it from being fully silky.
Measured
ASR and Tape Op both note the ~4–7 kHz trough; Tape Op flags a 3 dB peak at 3.5 kHz with ringing at 3.5 and 8 kHz and extreme highs tamed above 12 kHz; a Gearspace poster attributes the perceived brightness to 'a rather sharp bump around 8-9khz' typical of Audio-Technica.
Where it splits
Smooth, recessed and non-fatiguing — relaxed, never harsh, even slightly dark.67%
“The mid treble is relatively recessed and smoothed out, making the R70x a non-fatiguing listen.”
Fc-Construct, Headphones.com
Not fully smooth — a bright/grainy upper-treble streak (AT's ~8–9 kHz bump) some listeners notice.33%
“The weakest point, that is most noticeably affected by calibration is the rather bright high frequency increase.”
Sonarworks
Respectable resolution for the class, but not a standout — several sources say its soft note definition blunts the sense of detail, and the HD 600 edges it with a 'sharper' presentation. Owners report it tightens up and reveals more with a capable amp/source.
“resolution is relatively respectable as a whole, it's diminished by the soft note definition of the R70x”
Fc-Construct, Headphones.com
“high-frequency detail is still there, thanks to good transient response and very quick settling time”
Tape Op
The most mixed of the technical aspects. Some hear good macrodynamics and rate it above the HD 650 for punch; others find slam and impact the weak point — a little flat and undynamic — a read reinforced by the sub-bass roll-off and the power it wants to come alive.
“Finally, dynamic range is not the best. It can come off as a little flat and lacking impact.”
Fc-Construct, Headphones.com
“The R70x has better lower bass than the 650, better upper treble, and a flatter mid-midrange.”
DistortingJack (Gearspace)
Genuinely polarizing, and it tracks head and ear anatomy. For most it's a highlight — feather-light (~205–210 g) with the '3D wing' headband spreading pressure so there are no top-of-head sore spots. For a real minority the small, shallow ear cups, the lack of vertical cup swivel, and the wing paddles make it a poor fit that presses on the ears or sags on smaller heads.
Measured
~205–210 g without cable (ASR / Sonarworks); circular ear cups run small and swivel only horizontally, and Sonarworks noted a tester whose pair sagged because the clamp couldn't hold it on a smaller head.
Where it splits
One of the lightest, comfiest headphones there is — the wing headband kills headband pressure for long sessions.69%
“The light weight is awesome, and so is the relatively light clamping force.”
Fc-Construct, Headphones.com
A fit dealbreaker for some — small cups, no vertical swivel and the paddle can dig in.31%
“I found them uncomfortable to wear.”
amirm, Audio Science Review
Divides mildly. It's praised as a clever, no-nonsense mix of plastic and metal that doesn't feel cheap and is reassuringly light; critics find it flimsy and in need of careful handling, with scratch-prone logo plates. The recurring practical knock is the cable: a proprietary twist-lock, dual-2.5 mm connector with only a single long (~3 m) cable in the box and no external L/R marking.
“Yet it doesn't feel cheaply made in the slightest thanks to a well-engineered mix of plastic and metal in its build.”
Fc-Construct, Headphones.com
“the build feels far from robust and seems to require some care when handling”
Sonarworks
Measured
Sonarworks found manufacturing consistency very good — measured pairs matched within about ±1.5 dB across the spectrum.
Isolation
Strong consensus · 3 srcOpen-back by design: it isolates essentially nothing and leaks both ways. Expected for the type and not a flaw — sources note it's one of the more open, breathable headphones going — but it makes the R70x a quiet-room headphone, not one for offices, commutes or shared spaces.
“It's also one of the more open-feeling and breathable headphones, taking longer to get overly warm on the ears than something like the HD600.”
Fc-Construct, Headphones.com
“I really enjoy listening to music on "open-air" headphones, and I own many models”
Tape Op
The other genuine argument. To many reviewers it's an underrated reference-grade bargain and a legitimate HD 600 alternative, easy to recommend; to the more measurement-minded (and some owners) it's merely fine — outclassed in a crowded ~$300 field by Sennheiser and HiFiMan, and beaten on pure value by the cheaper Drop HD 6XX/58X. Discontinuation and used pricing tilt the case toward it if you find a deal.
Where it splits
An underrated reference open-back and a genuine HD 600 alternative — easy to recommend.70%
“The Audio Technica ATH-R70x is a headphone I can easily recommend.”
Fc-Construct, Headphones.com
Outclassed at the price — the crowded field does more for the money.30%
“Overall, I am ambivalent about Audio-Technica ATH-R70x so won't be putting it on my recommended list.”
amirm, Audio Science Review
