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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 wired, single-ear headset built for clear speaking in classrooms, calls and labs, choose Cyber Acoustics AC-104; if you need a wireless, open-ear audio solution that clips onto your existing glasses so both ears stay open, choose Yoidesu Open Ear Audio.
• Cyber Acoustics AC-104 — biggest strength: A mono over-ear design with a flexible, unidirectional boom mic that rotates 180 degrees, so you can wear it on either side and keep your voice front and center.
• Cyber Acoustics AC-104 — biggest trade-off: It's wired with a 6-foot cable and a single 3.5mm plug, so you're tethered to your device and you only get audio in one ear.
• Yoidesu Open Ear Audio — biggest strength: Truly open-ear listening that vibrates to transmit sound through a silicone-covered clip that adapts to different glasses temples, with up to 8 hours of Bluetooth 5.3 playtime.
• Yoidesu Open Ear Audio — biggest trade-off: There's no boom mic and no headphone jack, and it depends entirely on Bluetooth, so it's not the tool for dictation or noisy call centers.
• Who each pick is for: The AC-104 is for anyone who talks more than they listen — students, teachers, VoIP users, lab techs and gamers on a PC or Mac. The Yoidesu is for glasses wearers who want background audio while cycling, driving or walking and refuse to block their ears.
The AC-104 is a mono headset, and that word "mono" tells you almost everything. One earcup, one ear, one purpose: clear voice communication. The 30mm dynamic drivers cover a 20 Hz to 20,000 Hz range at 32 ohms, which is a perfectly normal, easy-to-drive spec for a headset that's meant to sit on a desk and be plugged into whatever computer is in front of you. The leatherette earpads are the practical touch here — they wipe clean, which matters a lot in a computer lab where the same headset gets handed from student to student all day.
What I like about the design is the flexibility. The unidirectional microphone rotates a full 180 degrees, so left-handed and right-handed wearers both get the boom on the correct side without a second SKU. The over-the-head band adjusts to fit basically any head size, and the 6-foot cable gives you enough slack to stand up, gesture at a whiteboard, or lean back without yanking the plug out. That plug is a single 3.5mm CTIA-compliant four-barrel connector, and Cyber Acoustics includes a Y-adapter that splits it into separate mic and headphone jacks for older desktops. That one accessory is why this thing works on a modern laptop and a ten-year-old tower alike.
Buy it if you spend your day talking: online classes, VoIP calls, virtual meetings, gaming voice chat, or a front-desk station where you need both hands free and your voice clean. In my opinion, the noise-canceling boom mic is the whole point — it focuses on your mouth and pushes background noise down, which is exactly what you want in a room full of people.
Yoidesu Open Ear Audio: Who It's For
The Yoidesu is a completely different animal, and the phrase "universal for various glasses" in its own description is the key. This isn't a headphone you wear on your head. It's an external Bluetooth audio module that clips to the temples of the glasses you already own, held on by an elastic silicone cover that adapts to different temple thicknesses. If you've ever tried bone-conduction or open-ear audio and hated the fit, this approach sidesteps that problem entirely — your glasses frame does the work.
The sound delivery is open and vibration-based, which means both ear canals stay completely unobstructed. That's the safety argument, and it's a real one: you can hear traffic, a car horn, a coworker, or your own surroundings while audio plays. For outdoor sports, cycling and driving, that's a meaningful difference from earbuds that seal you off from the world.
On the wireless side, it runs Bluetooth 5.3 with a 10-meter range, charges in about 2 hours, and plays for up to 8 hours. The 16-ohm impedance and dynamic driver tell you it's designed to be easy to drive from a phone or tablet, and the ABS enclosure keeps it light on your face. Controls are voice-based, and the whole thing is built around an "intelligent wearable" idea — you keep the glasses you like and the audio rides along.
Buy it if you wear glasses every day and want audio that never blocks your ears: commuters on bikes, runners who refuse to go deaf to traffic, drivers who want navigation prompts without earbuds, or anyone who finds in-ear tips uncomfortable after an hour. The 90-day manufacturer warranty is shorter than the AC-104's one-year limited warranty, so factor that into how hard you plan to use it.
Skip it if you need a microphone for calls, if you want to plug into a desktop without Bluetooth, or if you need sealed, immersive sound. There's no jack and no boom mic. This is a listening-and-awareness device, not a talk-to-people device.
Side-by-Side: Which Should You Choose?
• Best for glasses wearers → Yoidesu Open Ear Audio. It clips to your own frames via the elastic silicone cover, no new headgear required.
• Best for all-day wired reliability → Cyber Acoustics AC-104. No battery, no charging, no pairing — just a 6-foot cable and a 3.5mm plug.
• Best for battery life and wireless freedom → Yoidesu Open Ear Audio. Up to 8 hours per charge with Bluetooth 5.3 and a 10-meter range.
• Best for classroom and lab use → Cyber Acoustics AC-104. Cleanable leatherette pads, durable cable, and an included Y-adapter for older PCs.
• Best for outdoor safety → Yoidesu Open Ear Audio. Open ears mean you hear your surroundings while audio plays.
• Best for cross-device compatibility → Cyber Acoustics AC-104. PC, Mac, tablet or phone, with the Y-adapter covering split mic/headphone ports.
• Best for commuting and sport → Yoidesu Open Ear Audio. Lightweight, wearable, and it won't fall off your glasses.
If I had to pick one, I'd buy the Cyber Acoustics AC-104 — but only because my use case is talking, not listening. In my opinion, a headset that can't pick up your voice cleanly is useless for classes, calls and gaming chat, and the AC-104's rotating noise-canceling boom mic plus the Y-adapter and 6-foot cable make it the more versatile tool for a desk. The one-year limited warranty versus the Yoidesu's 90 days reinforces that it's built to be used hard.
That said, if you wear glasses and want audio that keeps both ears open for safety and comfort, the Yoidesu is the smarter choice — it just isn't a communication device. Match the tool to the job.
what is universal headphones
"Universal" usually means the headphones work across many devices rather than being locked to one brand or system. The Cyber Acoustics AC-104 fits that idea with a single 3.5mm CTIA-compliant plug plus a Y-adapter for separate PC mic and headphone ports, so it connects to laptops, desktops, tablets and phones. The Yoidesu is universal in a different sense — its silicone cover adapts to glasses temples of different thicknesses.
what are universal headphones
They're headphones designed for broad compatibility instead of a single ecosystem. In the AC-104's case, that's a wired 3.5mm connection that works with PC and Mac, plus an included adapter for older split-port machines. On the Yoidesu side, universality means the clip-on design fits various glasses frames rather than one specific model, using Bluetooth 5.3 for the wireless link.
are headphones universal
Not automatically — it depends on the connector and the platform. A 3.5mm wired headset like the AC-104 is about as close to universal as wired gets, since the bundled Y-adapter covers both combo and split ports. A Bluetooth-only device like the Yoidesu needs a source that supports Bluetooth, so it won't work with a desktop that has no wireless adapter.
are gaming headphones universal
Many are, and the AC-104 is a good example: its 3.5mm plug and Y-adapter let it work with a PC's separate mic and headphone jacks, and the 180-degree rotating boom mic suits voice chat on either side. It's also fine for phones and tablets. The Yoidesu, by contrast, is a listening-first open-ear device with no mic and no jack, so it's not the pick for game voice comms.
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