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We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Updated: 2026-09-21 · 6 min read · Independent comparison
• ELECDER i45 — biggest strength: A single, travel-friendly on-ear headphone with a foldable design, a 1.5 m cord, and a 40 mm dynamic driver covering 20 Hz–20,000 Hz. Its folded size is about 6 × 4.53 × 2.87 inches, so it packs down small.
• ELECDER i45 — biggest trade-off: There's no volume control on the headphone itself, and newer iPhones/iPads with Lightning or USB-C need an adapter (not included). It's also one pair, not a set.
• YFSFQS 20 — biggest strength: It's a bulk set of 20 classroom headphones in 8 mixed colors with a 1.2 m / 47.25-inch cord, built for plugging into Chromebooks, laptops, and PCs.
• YFSFQS 20 — biggest trade-off: It's a class set rather than a personal pair, and it has no noise control feature at all — the design is about durability and headcount, not isolation.
• Who each is for: ELECDER i45 → one kid, teen, or adult who wants a portable everyday pair. YFSFQS 20 → a teacher, school, or program that needs a full classroom set at once.
The ELECDER i45 is a wired on-ear headphone with a rounded earcup shape, a red nylon-and-plastic build, and a 3.5 mm jack. The specs that matter most here are the 40 mm dynamic driver and the 20 Hz–20,000 Hz frequency range — that's a full-range driver for a wired headphone, which tells you it's designed for general listening rather than a specialty use. The 32 ohm impedance and 95 dB sensitivity suggest it should be easy to drive from a phone, tablet, Chromebook, or laptop without a separate amp.
The design details point to a "take it anywhere" pair. It's foldable, and the folded footprint is roughly 6 × 4.53 × 2.87 inches, which is why the manufacturer markets it for travel and airplanes. The 1.5 m cord is on the longer side, so you're not tethered awkwardly close to a seat-back screen or a desk. The adjustable headband is the reason the sheet says it fits kids, teens, and adults — but the recommendation notes kids over 8 years old, which is a sensible guide for headband fit and cord handling.
Where it falls short: there are no volume buttons on the headphone, so you control level from your device. If you're on a newer iPhone or an iPad Pro 11 and up, you'll need a Lightning-to-3.5 mm adapter, which isn't included. And the "sound isolation" listed is passive isolation from the cushions, not active noise cancellation — fine for a classroom or a plane, not a replacement for ANC. I'd point this at a student who wants one reliable pair for school, bus rides, and homework, and away from anyone who wants wireless or in-headphone controls.
The YFSFQS 20 is a different animal entirely: a 20-pack of on-ear student headphones in 8 mixed colors, intended as a wholesale classroom set. The headline spec is simply the count — 20 pairs — plus the 1.2 m / 47.25-inch cord and the 3.5 mm jack that plugs straight into a Chromebook, laptop, or PC. That combination is the whole point: a teacher can hand out a set and not worry about pairing, charging, or batteries.
The build description emphasizes lightweight construction, padded ear cushions, and an adjustable headband that fits all sizes, with a plastic, fabric, and foam enclosure. The 32 ohm impedance matches the ELECDER on paper, so it should be similarly easy to drive from standard school devices. The mixed colors are a practical touch for classrooms — easy to tell sets apart or assign by group.
The trade-offs are equally clear. There's no noise control of any kind, so these are purely for listening at moderate levels in a shared room. There's no volume control on the headphone, which means students adjust from the device. And this is a class set, not a personal pair — if you need one nice pair for one kid, buying 20 is simply the wrong shape of product. There's a 1-year warranty and a stated satisfaction guarantee with a 12-hour response window, which matters more for institutional buyers who need a path if a unit fails mid-semester.
• Best for a single student or traveler → ELECDER i45. Foldable, 1.5 m cord, one pair, built for portability.
• Best for a classroom or school program → YFSFQS 20. 20 pairs in 8 mixed colors, ready to hand out.
• Best for packing in a bag → ELECDER i45. The folded size of about 6 × 4.53 × 2.87 inches is the deciding factor.
• Best for plugging into shared Chromebooks/laptops → YFSFQS 20. The 3.5 mm jack and 1.2 m cord are sized for desk use across many devices.
• Best for a wider frequency range on paper → ELECDER i45. It's the one sheet that lists 20 Hz–20,000 Hz; the YFSFQS sheet doesn't list a frequency range.
• Best for adults who also want to use the same pair → ELECDER i45. The adjustable headband is explicitly rated for kid, teen, and adult.
• Best if you need to replace a single broken unit cheaply later → YFSFQS 20. A 20-pack gives you spares from day one.
• Best if you want in-line controls or noise cancellation → neither. Both are plain wired headphones; adjust volume on your device.
In my opinion, most people searching this comparison are buying for one person, and for that the ELECDER i45 is the better pick — the foldable frame, longer 1.5 m cord, and listed full-range 40 mm driver make it the more versatile everyday pair, whether it's a kid over 8, a teen, or an adult. I'd only switch to the YFSFQS 20 if the entire reason you're shopping is headcount: a classroom, a lab, or a program that needs 20 pairs in one order. That's not a quality judgment — it's a fit judgment. Check the current price on Amazon for whichever one matches your situation, since both are wired and neither carries a premium feature you'd pay extra for.
FAQ
Yes. They use a standard 3.5 mm jack and a 1.2 m cord, and the product is specifically described for Chromebook, laptop, and PC use. No adapter is mentioned as required.
No. The ELECDER i45 lists sound isolation only, which is passive cushion isolation, and no volume buttons — you adjust from your device. The YFSFQS 20 lists no noise control at all.
It depends on how many people you're outfitting. For one listener, the ELECDER i45 gives you a foldable, travel-ready pair. For a whole class, the YFSFQS 20 spreads the cost across 20 pairs. Compare the current prices on Amazon for the quantity you actually need.
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