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If you want a classroom-ready multipack that equips a whole room of students at once, choose YFSFQS Bulk Kids Earbuds; if you need one pair of wired earphones built around immersive bass, a built-in microphone and dual USB-C/3.5mm connectivity, choose Umiyoo Earphones Immersive Bass. These two products could hardly be more different in intent — one is a sharing-and-supply purchase, the other is a personal listening upgrade — so the right answer depends almost entirely on whether you're buying in bulk for other people or buying once for yourself.
• YFSFQS biggest strength: a 100-pack of wired in-ear earbuds in six mixed colors, each individually wrapped, so you can hand them out to a class, a lab or a library group without splitting up a single retail box.
• YFSFQS biggest trade-off: it's a no-frills design — no microphone noise reduction, no extra ear-tip sizes listed, no USB-C adapter — and the spec sheet lists "noise control: None."
• Umiyoo biggest strength: a four-driver in-ear design with balanced armature drivers, a wide 20 Hz–102 KHz frequency range, environmental noise cancellation and a mic that works for calls on USB-C devices.
• Umiyoo biggest trade-off: it's a single pair for one listener, and the age range is listed as Adult — it isn't a shared or classroom solution.
• Buy YFSFQS if you're outfitting students, a computer lab, a library, a training room or an event where dozens of people each need their own pair.
• Buy Umiyoo if you're one person who wants bass-forward wired listening, inline volume control and a cable that works with both modern USB-C phones/laptops and older 3.5mm jacks.
The YFSFQS Bulk Kids Earbuds is, first and last, a logistics product. The headline fact is the 100-pack: one hundred wired in-ear earbuds, mixed across six colors, each one individually packaged in its own OPP bag. That single detail tells you who this is for. If you've ever tried to source headphones for a classroom, a school computer lab, a library checkout desk, a museum program or a staff training session, you know the real problem is never "which earbuds sound best" — it's getting enough of them, in a form you can hand out one at a time, without a pile of tangled loose cables.
Each earbud cord runs 1 meter (about 4 feet), which is a sensible length for a student seated at a Chromebook, laptop or desktop PC. The connection is a standard 3.5mm jack, the format almost every school-issued laptop and desktop still uses, so there's no adapter to lose. The design is described as having rounded tips with a modern, slightly youthful styling, and the impedance is 16 ohm with a 20 Hz–20,000 Hz frequency range — the ordinary, easy-to-drive range you'd expect from a basic pair meant to be plugged into whatever device is in front of the user. The manufacturer describes the sound as clear without being jarring, which is exactly the right target for kids listening to lessons, audiobooks or test audio rather than chasing bass.
Who should skip it? Anyone who cares about audio quality as a personal priority. There's no microphone noise reduction, no inline volume control beyond the described remote/media control, no USB-C option and no alternate ear-tip sizes listed. If you're buying for yourself and you want rich bass, this isn't the product — it's the product you buy so that thirty other people each have something that works. The listed age range spans kid, teen and adult, and the intended uses are explicitly institutional and promotional: classrooms, labs, libraries, hotels, hospitals, museums and training. That's the honest picture.
Umiyoo Earphones Immersive Bass: Who It's For
The Umiyoo Earphones Immersive Bass is the opposite kind of purchase: one pair, for one person, with the audio hardware as the whole point. The spec sheet lists four drivers using balanced armature driver technology, an impedance of 32 ohm, a sensitivity of 96 dB, and a frequency range of 20 Hz all the way up to 102 KHz. That last figure is the one that stands out — it's a dramatically wider claimed range than the YFSFQS pair's 20 Hz–20,000 Hz, and it signals a design aimed at detailed, bass-forward listening rather than "good enough for a lecture." The product name says "immersive bass," and the described subwoofer element and DAC-decoded sound are consistent with that intent.
Connectivity is the other reason to pick this one. Umiyoo includes a USB-C to 3.5mm plug, so the same earphones work with USB-C devices and with standard 3.5mm jacks. If you're juggling a newer phone or laptop that dropped the headphone jack alongside an older device that still has one, that dual-plug setup removes the adapter hunt. The inline control handles volume, track switching and answering calls, and the listed control method is a push button with a volume control — a simple, tactile arrangement rather than touch controls you have to learn.
Noise handling is where the two products diverge most sharply. YFSFQS lists noise control as "None." Umiyoo lists environmental noise cancellation, and separately describes a physical noise-reduction effect: the combination of the ear tips and the headphone cavity blocks most ambient noise passively, and the multiple ear-tip sizes are there to help you get a proper seal. On top of that, when the earphones are connected to a USB-C device, the microphone provides call-environment noise reduction. So if you take calls or listen in a noisy room, this is the design that actually addresses it.
The trade-offs are real. The age range is listed as Adult, so this isn't marketed as a kids' product. The enclosure is metal and the item weight is about 22.68 g, which is a solid, substantial feel rather than a featherweight one. It ships as a single pair with soft earplugs, a USB-C adapter and the 3.5mm wired earphones — so there's no sharing, no spares and no bulk value. There's a 1-year warranty, the same coverage window as the YFSFQS set.
Side-by-Side: Which Should You Choose?
• Best for outfitting a group → YFSFQS Bulk Kids Earbuds. 100 individually wrapped pairs across six colors is a distribution solution, not just a headphone.
• Best for audio quality and bass → Umiyoo Earphones Immersive Bass. Four balanced armature drivers and a claimed 20 Hz–102 KHz range point at a far more ambitious listening design.
• Best for phone calls → Umiyoo Earphones Immersive Bass. It has a microphone with call-environment noise reduction on USB-C, plus inline call answering; YFSFQS lists no noise control at all.
• Best for classroom, lab or library use → YFSFQS Bulk Kids Earbuds. The intended-use list is explicitly institutional, and the 3.5mm jack matches school laptops and desktops.
• Best for mixed modern/older devices → Umiyoo Earphones Immersive Bass. The included USB-C to 3.5mm plug covers both port types in one purchase.
• Best for low-hassle replacement when one breaks → YFSFQS Bulk Kids Earbuds. With a hundred pairs on hand, a failed cable is a one-second swap instead of a reorder.
• Best for a single adult listener → Umiyoo Earphones Immersive Bass. The listed age range is Adult and the fit options are built for extended personal wear.
• Best for noise reduction → Umiyoo Earphones Immersive Bass. Passive blocking from the tip-and-cavity seal plus environmental noise cancellation beats "None."
In my opinion, the deciding question here isn't which earphone is "better" — it's how many people you're buying for. If the answer is one, I'd buy the Umiyoo Earphones Immersive Bass: the four-driver design, the wide frequency range, the mic with call noise reduction and the dual USB-C/3.5mm plug make it the more capable personal pair on paper, and the metal housing suggests it's built to be carried around. If the answer is a room full of people, I'd buy the YFSFQS Bulk Kids Earbuds without hesitating, because no single pair of premium earphones solves the problem a 100-pack solves. Match the product to the job and neither choice is a compromise. Check the current price on Amazon for whichever one fits your situation before you commit.
Yes — it's described as a 100-pack across six mixed colors, each pair individually packaged in its own OPP bag. Note that the product information section also lists "number of items: 20," so if exact count matters for your order, confirm with the seller before buying.
Yes. Umiyoo includes a USB-C to 3.5mm plug, so the same earphones connect to USB-C audio devices and to standard 3.5mm jacks. The headphone jack itself is listed as Type-C, with the 3.5mm connection handled through the adapter.
The Umiyoo pair, based on the specs. It lists environmental noise cancellation plus a passive seal from the ear tips and cavity, and the mic adds call-environment noise reduction on USB-C. The YFSFQS pair lists noise control as "None."
For lessons, test audio and everyday listening on a Chromebook or laptop, yes — the 16 ohm impedance and 20 Hz–20,000 Hz range are standard, easy-to-drive specs, and the 1-meter cable suits a desk setup. They're not aimed at music lovers chasing deep bass.
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