We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Updated: 2026-10-02 · 7 min read · Independent comparison
If you want a true wired monitoring headphone with big drivers and a semi-open build for studio-style listening, choose Superlux HD681; if you need a wireless open-ear earbud with real-time translation across 144 languages, choose Generic 5.4. These two products share almost nothing except the words "open" and "headphones" — so the right pick comes down to what you actually do all day.
• Superlux HD681 — biggest strength: 50mm neodymium drivers with a 10–30,000 Hz range and a 2.5 m single-sided cable — a wired, semi-open monitoring design built for detail and long sessions.
• Superlux HD681 — biggest trade-off: It is wired only, so there is no battery, no wireless freedom, and no translation features whatsoever.
• Generic 5.4 — biggest strength: 144-language real-time translation, Wireless 5.4 connectivity, a 25-hour battery with an LED readout, and a rotating open-ear fit.
• Generic 5.4 — biggest trade-off: A 14.2 mm driver in an open-ear shell cannot match the driver size and frequency range of a full-size monitoring headphone, and it is not a studio tool.
• Who each is for: Superlux HD681 for producers, musicians, and detail-focused listeners who want a cable and a proper headband; Generic 5.4 for travelers, multilingual teams, and anyone who wants translation and music without wires.
The Superlux HD681 is, first and foremost, a monitoring headphone. The headline spec is the Ø50mm neodymium driver paired with a 10–30,000 Hz frequency range. That is a genuinely wide range, and the driver size is the kind you normally associate with full-size studio cans rather than something pocketable. If your priority is hearing what is actually in a mix — the reverb tail, the pick noise, the low-end rumble — that spec sheet is aimed squarely at you.
The design is semi-open back. That matters more than people expect. A semi-open or open back lets air move behind the driver, which typically produces a wider, more natural sense of space and less of that closed-in, pressurized feeling you get from sealed cups. The trade-off is the flip side of the same coin: open designs leak sound in both directions. You will hear the room; the room will hear you. That makes the HD681 a poor fit for a noisy train or a shared office, and a great fit for a quiet desk, a home studio, or a practice room.
Comfort and durability are clearly part of the pitch here. The set is described as lightweight with soft ear pads, and Superlux specifically calls out a comfortable fit even with glasses — a small but very real detail for anyone who wears frames and has fought with clamping headphones for years. The bundle also includes replacement ear pads compatible with both HD681 and HD688, and you get two flavors: air-cushion pads that reduce bass leakage, and classic leatherette pads for a more traditional sound profile. That is essentially two voicings in one box.
Connections are covered properly: a 2.5-meter single-sided cable (about 8.2 feet — generous for a desk setup), a gold-plated stereo mini plug, and a 3.5 mm to 6.3 mm adapter so it works with both portable gear and full-size studio interfaces.
Buy it if you want a wired, detail-forward monitoring headphone with big drivers, a long cable, and swappable pads. Skip it if you need wireless freedom, active noise isolation, or any kind of translation feature — this product has none of those.
The Generic 5.4 is a completely different animal: a wireless open-ear translation earbud. The defining feature is 144-language support for real-time back-and-forth conversation. The intended scenarios are spelled out in the spec sheet — meetings, travel, family chats, daily use. If you regularly sit across from someone who does not share your first language, that single capability is the entire reason to consider this product.
The fit is the second pillar. It uses a rotating open-ear design, with each earphone measuring roughly 1.5 x 2.1 inches (37.51 x 52.43 mm). Open-ear means the driver sits outside your ear canal rather than plugging it, so you stay aware of your surroundings — useful on a bike, in an airport, or in a meeting where you still need to hear the room. The spec sheet describes it as light and stable for long listening sessions without extra pressure.
Audio comes from a 14.2 mm driver, which is small in absolute terms but normal for this category and described as delivering detailed audio for music, calls, and translation. Connectivity is Wireless 5.4, with the spec sheet emphasizing a steady, low-latency link — low latency matters a lot for translation, because a laggy link makes conversation feel like a walkie-talkie.
Battery life is rated at up to 25 hours, and the LED digital display on the case shows remaining power at a glance. That is a genuinely practical touch: you check the number before you leave instead of guessing. The set includes two earphones and a charging case measuring about 2.3 x 1.8 inches (58.98 x 44.98 mm), in a sleek black finish.
Buy it if you want wireless open-ear earbuds with translation and long battery life in a small case. Skip it if you need reference-grade monitoring, a wired connection, or isolation from background noise — open-ear designs deliberately let the world in.
• Best for studio monitoring and mix detail → Superlux HD681. 50mm drivers and a 10–30,000 Hz range are built for critical listening.
• Best for travel and multilingual conversation → Generic 5.4. 144-language real-time translation is its core function.
• Best for long wired desk sessions → Superlux HD681. The 2.5 m single-sided cable and lightweight, glasses-friendly fit are made for hours at a desk.
• Best for wireless freedom → Generic 5.4. Wireless 5.4 with up to 25 hours of playtime and no cable at all.
• Best for staying aware of your surroundings → Generic 5.4. The rotating open-ear fit leaves your ear canal open.
• Best for a wide, spacious soundstage → Superlux HD681. The semi-open back design trades isolation for a more natural sense of space.
• Best for charging convenience → Generic 5.4. The LED digital display shows remaining power at a glance.
• Best for pad customization and longevity → Superlux HD681. The bundle includes replacement pads plus two pad styles to change the tuning.
• Best for a compact carry setup → Generic 5.4. Everything packs into a small charging case.
In my opinion, the Superlux HD681 is the better buy for anyone whose goal is actually listening to and analyzing audio. It gives you a real monitoring headphone: large drivers, a wide frequency range, a semi-open design for a more open soundstage, two pad options to tune the sound, and a cable long enough for a proper desk. The Generic 5.4 is a smart product, but it is solving a different problem — translation and wireless convenience, not fidelity. If you want headphones to work in, I recommend the HD681. If you want earbuds to talk to the world with, the Generic 5.4 is the one. Check the current price on Amazon before you commit, since that is the one thing a spec sheet cannot tell you.
FAQ
how to open back headphones work
what is open back studio headphones
They are headphones designed for monitoring and mixing where the cups are open or partially open at the back. The goal is a more spacious, less boxed-in presentation than a sealed design. The trade-off is minimal isolation, which is why they suit quiet studios and desks rather than noisy commutes — exactly the Superlux HD681's use case.
what are the best open back headphones
"Best" depends entirely on your job for them. If you want a wired, semi-open monitoring headphone with 50mm drivers, a 10–30,000 Hz range, and swappable pads, the Superlux HD681 is my pick in this comparison. If you want open-ear earbuds with translation and wireless freedom, the Generic 5.4 fits that need instead.
are open back headphones better
Not universally — they are better for spaciousness and long, fatigue-free listening, and worse for isolation. The Superlux HD681's semi-open design gives you that openness, and the Generic 5.4's open-ear fit keeps you aware of your surroundings. Both let background noise in, so neither is ideal for loud places.
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