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We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
If you want an airy, semi-open sound with a wide frequency range for critical listening around the house or in a quiet library, choose SAMSON SR850; if you need closed-back isolation so you can focus in a noisy library or dorm, choose Audio-Technica ATH-M20x. That's the short version. The long version is about how each pair is built, what each one is actually good at, and which one fits the way you'll really use it.
• SAMSON SR850 — biggest strength: Semi-open, over-ear design with large 50 mm dynamic drivers, a 10 Hz–30 kHz frequency range, and a self-adjusting headband with plush velour pads for long, fatigue-free sessions.
• SAMSON SR850 — biggest trade-off: Semi-open means it leaks sound both ways — you'll hear the room, and the room will hear you. Not the pick for a loud or shared space.
• Audio-Technica ATH-M20x — biggest strength: Closed-back circumaural design with 40 mm drivers tuned for stronger low end, giving you real sound isolation and minimal bleed.
• Audio-Technica ATH-M20x — biggest trade-off: Narrower 15 Hz–20,000 Hz range and a single fixed 3.0 m cable with a left-side exit, which is a lot of cord to manage on the move.
• Who each is for: Reach for the SR850 if accuracy and a wide-open soundstage matter most. Reach for the M20x if you need to block out the world around you.
The SR850 is built around a 50 mm dynamic driver and a semi-open, circumaural enclosure. In plain terms: the cups sit around your ears, but the back of each cup is vented, so air moves and sound escapes. That's the whole personality of this headphone. The benefit is an airy, spacious presentation with a frequency range that stretches from 10 Hz all the way to 30 kHz — the widest of the two by a clear margin. If you spend your time picking apart a mix, following a bassline, or just wanting your music to feel like it's happening in a room rather than inside your skull, this is the design that gets you there.
The comfort story is genuinely thoughtful. You get velour ear pads, which breathe better than the leatherette-style materials you often find at this tier, plus a self-adjusting headband that finds your fit without you fiddling with sliders. At 32 ohms and 98 dB sensitivity, it's easy to drive from a laptop, a phone, or a basic interface without needing a dedicated amp. The listed weight is 1.1 pounds, and there's a 3.5 mm jack plus a gold-plated 1/8-inch to 1/4-inch adapter in the box, so it plugs into both consumer gear and studio equipment. Samson backs it with a limited two-year manufacturer warranty.
Who should buy it? Someone who works or studies in a quiet, controlled space — a home desk, a mixing corner, a silent study room — and wants detail and openness over isolation. Musicians tracking and mixing, podcasters, and anyone who values a "true and natural" reference sound will get the most out of it.
Audio-Technica ATH-M20x: Who It's For
The M20x takes the opposite approach. Its 40 mm drivers use rare-earth magnets and copper-clad aluminum voice coils, and Audio-Technica tuned them specifically for enhanced low-frequency performance. The enclosure is closed-back and circumaural — the pads contour around your ears and seal against your head. That single design choice changes everything about how you'll use it: sound stays in, noise stays out.
The frequency response runs 15 Hz to 20,000 Hz, with 47 ohms impedance and 96 dB sensitivity. That's a narrower top end than the Samson — you lose the upper treble extension — but you gain a fuller, more present low end and real isolation. The "Sound Isolation" noise control is the headline feature here. In a loud environment, being able to hear every footstep in a game or every detail in a track without cranking the volume is worth a lot, and the closed design delivers it with minimal bleed.
Build-wise, it's a lightweight wired headphone with a professional-grade ear pad and headphone material meant for extended wear. The cable exits from a single side — the left — as a straight 3.0 m run, and there's a 6.3 mm snap-on adapter included. Audio-Technica covers it with a two-year warranty on parts and labor.
Who should buy it? Anyone who needs to concentrate in a noisy room. Students, gamers, people tracking vocals in a room with other gear running, commuters, and anyone who shares living space. If blocking the world out is the point, this is the pair.
Who should skip it? If you want maximum openness and the widest possible frequency spread, the closed design works against you. And that long straight cable with a single-side exit is great at a desk but awkward if you're walking around — it's not a design built around portability.
• Best for a quiet study space → SAMSON SR850. Semi-open ventilation and velour pads keep long sessions comfortable without trapping heat.
• Best for a noisy library or shared room → Audio-Technica ATH-M20x. The closed-back circumaural seal is the deciding feature when the room won't be quiet.
• Best for critical listening and mixing → SAMSON SR850. The 50 mm drivers and 10 Hz–30 kHz range give you the wider, more open picture.
• Best for stronger bass and isolation → Audio-Technica ATH-M20x. Low-frequency tuning plus a sealed enclosure is a bass-and-focus combination.
• Best for easy driveability → SAMSON SR850. At 32 ohms versus 47 ohms, it's the slightly easier load for a phone or laptop jack.
• Best for cable management → Audio-Technica ATH-M20x. The single-side left exit beats a two-sided run, though 3.0 m is still a long cord.
• Best for plugging into studio gear → either. Both ship with a 1/4-inch adapter, so both work with an interface or mixer.
• Best for moving around → neither, honestly. Both are wired over-ear designs. If your priority is a sweatproof, wireless setup with long battery life for the library, a Bluetooth headset is a different category entirely — this comparison is about sound quality and isolation, not wireless freedom.
For a library, I'd buy the Audio-Technica ATH-M20x. The reason is simple and it's the reason you're there in the first place: you need to concentrate. Closed-back isolation means the chatter, the keyboard clatter and the HVAC hum stay outside, and your audio stays in. The M20x isn't the wider or more revealing headphone — the SR850 wins that argument — but in a shared quiet space, isolation beats openness almost every time. If your library is genuinely silent and you want the most detailed, airy sound, flip my pick to the SR850. Otherwise, the M20x is the one I'd grab on the way out the door.
It depends on what you need, though I know that's the answer nobody wants. The SR850 has a wider frequency range and a more open, spacious sound. The M20x isolates better and hits harder in the low end. Better is the wrong word — different is the right one.
Yes, that's its main strength. The closed-back circumaural design seals around your ears for sound isolation with minimal bleed, so you hear your audio rather than the room. It's passive isolation, not active noise cancellation, so it won't erase everything — but it takes a big bite out of ambient noise.
They can. Semi-open means the back of each cup is vented, so sound escapes outward and ambient noise comes in. That's the trade-off for the airy, open soundstage. In a quiet shared space, people near you may hear your music.
The SR850, on paper. Its 32-ohm impedance and 98 dB sensitivity make it a slightly lighter load than the M20x at 47 ohms and 96 dB. Both will run from a laptop or phone jack, but neither needs a dedicated amplifier to reach a usable volume.
Yes — worth a look, since both sit in the budget studio tier and value shifts over time. Use the price button on this page to see the latest on Amazon before you commit.
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