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We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
If you want a neutral, flat-response tool built for studio tracking, mixing and DJ monitoring, choose Audio-Technica ATH-M40x; if you need big bass, a long DJ-style cable and an inline mic for everyday listening, choose OneOdio Over Ear Headphone.
• Audio-Technica ATH-M40x — biggest strength: 40mm neodymium drivers with copper-clad aluminum voice coils tuned for a flat response, in a sound-isolating circumaural design that folds down for transport.
• Audio-Technica ATH-M40x — biggest trade-off: It is a wired, monitor-first headphone with no microphone and no inline controls, so it is not built for phone calls or casual mobile listening.
• OneOdio Over Ear Headphone — biggest strength: 50mm dynamic drivers voiced for powerful bass, plus two detachable cables (a coiled 9.8ft 6.35mm-to-3.5mm cable and a 3.9ft 3.5mm cable with mic and on/off button).
• OneOdio Over Ear Headphone — biggest trade-off: There is no active noise control, and its bass-forward tuning pushes it away from neutral reference work.
• Who each pick is for: the ATH-M40x is for the home studio, tracking desk and DJ booth; the OneOdio is for listeners who want fat low end, a long cable run and a mic on a budget-minded wired setup.
The ATH-M40x is a monitor headphone, and everything about it points that direction. The 40mm neodymium drivers use copper-clad aluminum voice coils, and the tuning is deliberately flat rather than flattering. In practice that means you hear the recording, not a boosted version of it. If you are mixing a track, editing a podcast or checking whether a vocal sits properly against a guitar, that flatness is the entire point. Colored headphones make everything sound nice; this one makes problems audible.
The physical design backs up the studio intent. The circumaural, around-the-ear cups seal around your ears to isolate you from a loud room, which matters when you are tracking a live instrument or standing in a booth with a drummer. The earcups swivel up to 90 degrees, so you can swing one side off for single-ear monitoring while keeping the other cup on — a small feature that anyone who has recorded a vocal take will immediately appreciate. The cable system is detachable and single-sided, and both a coiled and a straight cable are included, so you can swap to whatever suits the session. When you are done, the headphones fold down into the included carry pouch.
OneOdio Over Ear Headphone: Who It's For
The OneOdio is the opposite personality. Its 50mm dynamic drivers are paired with neodymium magnets and voiced for what the spec sheet openly calls bass sound — powerful low end, clear vocals and crisp highs, spanning a 20 Hz to 20,000 Hz frequency range. That tuning is the reason to buy it. If you listen to hip-hop, EDM, pop or anything where the kick and bassline carry the track, the OneOdio leans into that. It is not pretending to be flat, and it should not be judged as if it were.
The cable setup is unusually generous for a wired headphone. You get a coiled DJ-style cable that stretches to 9.8 feet, terminated with a standard 6.35mm plug on one end and 3.5mm on the other, plus a shorter 3.9ft 3.5mm cable with a built-in mic and an on/off button. Both cables are fully detachable, so you can plug straight into a mixer with the big plug or into a phone or laptop with the small one — no adapter hunting. The long coiled cable is genuinely useful if your amp or TV sits across the room from your chair. The short one turns the headphone into something you can take calls on.
Comfort gets real attention too: soft padded ear cushions, an adjustable and stretchable headband, and an over-ear, round-earpiece fit. One honest caveat from the specs — noise control is listed as none. The padding provides some passive isolation, but there is no active noise cancellation here, so a noisy train or a loud office will bleed through. Also note the control method is listed as touch, which is worth understanding before you buy if you expect physical buttons. Who should buy it: casual listeners, DJs who want a long coiled cable and big bass, and anyone who wants one wired headphone to cover music, video and calls. Who should skip it: anyone doing critical mixing who needs a neutral reference.
Side-by-Side: Which Should You Choose?
• Best for flat, honest monitoring → Audio-Technica ATH-M40x. Tuned for flat response with copper-clad aluminum voice coils; the OneOdio is deliberately bass-forward.
• Best for single-ear monitoring while recording → Audio-Technica ATH-M40x. The earcups swivel up to 90 degrees, which the OneOdio's design does not offer.
• Best for cable reach and plug flexibility → OneOdio Over Ear Headphone. A 9.8ft coiled 6.35mm-to-3.5mm cable plus a 3.9ft 3.5mm cable with mic, both detachable.
• Best for taking calls or joining meetings → OneOdio Over Ear Headphone. The short cable includes a microphone and an on/off button; the ATH-M40x has neither.
• Best for travel and storage → Audio-Technica ATH-M40x. It folds down and ships with a carry pouch, and weighs about 8.5 ounces in aluminum.
• Best for loud-room isolation → Audio-Technica ATH-M40x. Circumaural, sound-isolating cups are designed to block out a noisy environment.
• Best for a simple one-headphone setup → OneOdio Over Ear Headphone. It covers music, TV, mixing desk and mobile use without buying anything extra.
If I were buying for myself, I would pick the Audio-Technica ATH-M40x. In my opinion, the flat tuning, the sound-isolating circumaural fit and the 90-degree swiveling cups make it the more capable tool — it does the jobs that actually require a serious headphone, and it folds into a pouch when you are done. I would only steer you to the OneOdio if bass, cable length and a built-in mic are what you actually care about, because it wins those categories clearly. Check the current price on Amazon before deciding, since that is the one variable that can flip the call.
For mixing, yes — in my opinion. The ATH-M40x is tuned for flat response with 40mm neodymium drivers, so it reveals problems rather than smoothing them over. The OneOdio's 50mm drivers are voiced for bass, which is fun but not neutral.
Does the OneOdio Over Ear Headphone have a microphone?
Both are workable, but they lean different ways. The OneOdio gives you a 9.8ft coiled cable and a 6.35mm plug ready for a mixer, plus strong bass. The ATH-M40x gives you single-ear monitoring via 90-degree swiveling cups, which many DJs rely on.
Neither has active noise cancellation. The ATH-M40x uses a circumaural, sound-isolating design to block outside noise passively. The OneOdio lists noise control as none, though its padded cushions still provide some passive isolation.
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