We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Updated: 2026-09-20 · 7 min read · Independent comparison
If you want a lightweight, isolating in-ear pair for commuting, workouts and detailed listening on the move, choose SoundMAGIC E11; if you need a big, comfortable over-ear set for long sessions at a desk with deep low-end, choose Monoprice Semi-Open Over Ear.
• SoundMAGIC E11 — biggest strength: a compact aluminium in-ear design with 10 mm dynamic drivers, silver-plated copper cable and passive sound isolation that seals out the world.
• SoundMAGIC E11 — biggest trade-off: it's wired, has no microphone or inline controls, so calls and track skipping happen on your device, not on the cable.
• Monoprice Semi-Open Over Ear — biggest strength: huge 53 mm drivers, a semi-open acoustic design and a leather headband with velvet honeycomb ear caps built for marathon listening.
• Monoprice Semi-Open Over Ear — biggest trade-off: it's a bulky over-ear set that weighs 1.3 pounds and only partially blocks outside noise, so it's a stay-put headphone, not a pocket one.
• Who each pick is for: the E11 suits commuters, gym-goers and detail-focused listeners who want portability and isolation; the Monoprice suits desk workers, gamers and bass lovers who want comfort and scale over hours.
The E11 is a wired in-ear monitor built around a redesigned 10 mm dynamic driver. SoundMAGIC's own description points to a balanced signature — extended, airy highs with warm, textured bass — and the spec sheet backs up the "serious listener" framing: a 20 Hz–20 kHz range, 42 ohm impedance and 112 dB sensitivity. That impedance/sensitivity combination tells you something practical: it's easy enough to drive from a phone or laptop jack without a dedicated amp, but the higher-than-average impedance means it plays nicely with better sources too.
The physical design is where this one earns its place. The housing is aluminium, cut with a high-precision process and hand-finished, which keeps the weight at just 12 grams. The sound tubes are ergonomically angled, and the silicone tips are meant to seat deeply and seal. That seal is the whole point — passive noise isolation means the rumble of a train, a gym's background music or an open-plan office fades back so you can hear the music rather than the room. The angled shape also matters for fit stability; an in-ear that sits at an angle tends to stay put when you move.
Who should buy it? Anyone who listens on the go and wants the outside world turned down: commuters, treadmill and gym users, students in libraries, and people who care about detail and separation rather than sheer thump. The silver-plated copper cable is aimed at preserving signal integrity for high-res files, and the 60° angled gold-plated 3.5 mm jack is a small but genuinely useful touch on phones and tablets where straight plugs get stressed in a pocket.
Who should skip it? If you want to take calls, this is the wrong pick — the E11 has no microphone and no inline control module. If you dislike things inside your ears, or you want a big, roomy, speaker-like presentation, an over-ear set will suit you better. And if you want wireless freedom, this is a strictly wired design.
Monoprice takes the opposite approach: scale and comfort. The headline number is the driver — 53 mm, which is enormous next to the E11's 10 mm. In practice, a driver that size moves a lot more air, which is exactly why Monoprice markets "ultra low, deep bass." The stated frequency range runs 15 Hz to 28 kHz, so the low end extends meaningfully below what the E11 covers. If your playlist leans on hip-hop, electronic, film scores or gaming soundtracks, that extra bottom-end reach is the reason to look here.
The semi-open design is the interesting part, and it's worth understanding rather than skimming. Fully closed headphones trap everything inside the cup and can sound boxed-in. Fully open headphones breathe but leak sound in both directions and isolate almost nothing. Semi-open sits between: Monoprice says it balances and reduces ambient noise while keeping a natural, spacious presentation with clear separation, transparent highs and accurate mids. Translated into real life, that means you get some reduction of surrounding noise but not a cone of silence — you'll still hear a loud TV or a conversation nearby.
Comfort is clearly the design priority. The headband is leather, the ear caps are soft velvet honeycomb, and the sliding supports are brushed aluminium for rigidity without bulk. Monoprice explicitly frames it as comfortable for extended listening sessions, and that's the use case: long work blocks, study marathons, multi-hour gaming. The 1.3-pound weight is the honest counterpoint — that's a substantial object on your head, and it's the kind of headphone you take off and put on a stand rather than coil into a pocket. It includes a 3.5 mm cable, a 3.5 mm-to-1/4-inch adapter and a travel bag, so it can move between a laptop, a desktop and a home stereo.
Who should buy it? Desk-bound listeners who want big, deep sound and don't mind a full-size fit. Kids, teens and adults are all named in the product framing, so it's pitched as a family-friendly general-purpose headphone. Who should skip it? Anyone who needs isolation on a plane or train, anyone who wants a mic for calls, and anyone who wants something they can carry in a jacket pocket.
• Best for noise isolation → SoundMAGIC E11. The angled in-ear fit with silicone tips actively seals the ear canal; the Monoprice only partially reduces ambient noise by design.
• Best for deep, physical bass → Monoprice Semi-Open Over Ear. A 53 mm driver with a 15 Hz low-end reach versus the E11's 10 mm driver and 20 Hz floor.
• Best for commuting and travel → SoundMAGIC E11. Twelve grams, a hard carrying case included, and a cable that coils away.
• Best for long desk sessions → Monoprice Semi-Open Over Ear. Leather headband, velvet honeycomb ear caps and brushed aluminium sliders built for hours of wear.
• Best for open, spacious soundstage → Monoprice Semi-Open Over Ear. The semi-open acoustic design is specifically tuned for separation and a natural presentation.
• Best for detail and clarity on high-res files → SoundMAGIC E11. The silver-plated copper cable is chosen for low-loss signal transmission, and the 42 ohm impedance pairs well with decent sources.
• Best for calls and inline control → neither, and that's worth knowing. The E11 has no mic; the Monoprice uses a remote media control but is not described as having a microphone.
• Best for plug-and-play across devices → a tie. Both use a standard 3.5 mm jack, and the Monoprice adds a 1/4-inch adapter for home audio gear.
In my opinion, most people reading a comparison like this are trying to solve one problem: how to hear their music properly without being annoyed by their environment or their own ears. For that, I'd buy the SoundMAGIC E11. The aluminium build, 12-gram weight, angled isolating fit and balanced 10 mm driver make it the one I'd actually carry every day, and the hard case means it survives the bottom of a bag. I'd only switch to the Monoprice Semi-Open Over Ear if my listening happens at a desk, I want that 53 mm low-end weight, and comfort over several hours matters more to me than portability or isolation. Both are honest wired designs; the choice is really "in my ears, out in the world" versus "on my head, at my desk."
Yes, but in a balanced way. It uses a 10 mm dynamic driver with a 20 Hz–20 kHz range and is described as having warm, textured bass rather than a boosted, one-note low end. If you want maximum sub-bass impact, the 53 mm Monoprice driver is the more obvious choice.
Only partially. The semi-open design deliberately balances the isolation of a closed back with the natural sound of an open back, so it reduces ambient noise but won't silence a loud room. For real isolation, the E11's sealed in-ear fit is the better tool.
Neither is described as having a microphone. The E11 has no control module at all, and the Monoprice uses a remote media control. If you need to take calls, plan to use your device's own mic or look at a headset built for that purpose.
Both, yes — each uses a standard 3.5 mm jack, and the E11 adds a 60° angled gold-plated plug that's easier on pocketed devices. The Monoprice also ships with a 3.5 mm-to-1/4-inch adapter, which is handy if you want to plug into a home stereo or audio interface. If you're comparing cost, check the current price on Amazon for both before deciding.
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