We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Updated: 2026-09-19 · 7 min read · Independent comparison
If you want a plug-and-play wired earbud that works with almost any Samsung Galaxy phone that still has a headphone jack, choose RS Traders Samsung Earbuds; if you need a USB-C wired IEM tuned for bass-heavy listening and modern jack-less phones, choose YINYOO KBEAR KS1.
• RS Traders Samsung Earbuds — biggest strength: A 3.5mm wired design with an in-line mic and volume buttons, aimed squarely at Galaxy phones that still carry a headphone jack.
• RS Traders Samsung Earbuds — biggest trade-off: No active noise cancellation, and its audio hardware is basic — a single dynamic driver at 32 ohm with no Hi-Fi tuning claims.
• YINYOO KBEAR KS1 — biggest strength: A 10mm polymer PET diaphragm dynamic driver with a dual magnetic circuit and dual cavity, tuned V-shape with emphasis on bass and clear vocals.
• YINYOO KBEAR KS1 — biggest trade-off: USB-C only, so it will not work on older phones or laptops that only have a 3.5mm port, and it lists active noise cancellation as a control type without deeper isolation detail.
• Who each pick is for: RS Traders for Galaxy S8/S9/S10/A31/A71 owners who want zero setup and call controls; YINYOO KBEAR KS1 for jack-less modern phone users who want a bass-forward IEM and don't mind a USB-C connection.
The RS Traders Samsung Earbuds are, at heart, a compatibility play. The 3.5mm jack and the listed Galaxy support — S10, S10e, S10+, S9/S9+, S8/S8+, A31, A71, Note 5, Note 8, Note 9 — tell you exactly who this is aimed at: people holding onto phones that still have an analog headphone port. There's no pairing, no charging, no app. You plug in and it works. For anyone who has ever fumbled with a Bluetooth connection before a call, that's the entire appeal.
The hardware is honest and simple. A 32 ohm impedance and a 20 Hz–20,000 Hz frequency range on a dynamic driver is standard wired-earbud territory. What stands out more is the physical design: a hybrid canal-style shape with a metal finish, a tangle-free fabric cable, and three silicone tip sizes in ultra-light weights. The listing specifically calls out side sleepers and small ears, which is a real, practical use case — most earbuds are miserable to lie on, and a soft, low-profile tip actually matters here. The in-line remote handles calls, track skipping, volume, and even Siri on iPhone, so it doubles as a headset, not just a music bud.
YINYOO KBEAR KS1: Who It's For
The KBEAR KS1 is a different animal. This is a proper in-ear monitor built by a HiFi-focused team, and the spec sheet reads like it. A 10mm polymer PET diaphragm, a dual magnetic circuit, and a dual cavity single dynamic driver — with a translucent rear cavity designed to make the sound more powerful. It's tuned V-shape, which in plain terms means boosted bass and treble with a dip in the middle. The listing describes it as having excellent bass, punchy low end, clear imaging, and good female vocals. If you listen to pop, hip-hop, EDM, or anything that lives or dies by its low end, that tuning is pointed directly at you.
The build is thoughtful too. The cavity is made from imported high-density PC material, chosen to suppress diffuse reflections of sound waves inside the housing — a real acoustic detail, not marketing fluff. It's skin-friendly, smooth, and shaped for a locked-in ergonomic fit that the listing says won't fall out while running. The kit is complete: a cable, two earpieces, three pairs of silicone tips, and a manual. It also comes with a one-year warranty and a stated 60-day refund window, which is a meaningful safety net for a first IEM.
The catch is the connector. This is USB-C only. That makes it a great match for an iPhone 15 Pro Max/Plus or a Galaxy S23/S22/S21/S20 Ultra, and a useless one for an older phone or a laptop with only a 3.5mm port. The listing also flags it as suitable for singers and musicians, and mentions a gentle reminder to rest your ears every two hours and to lower volume before plugging in to protect the diaphragm — small signs of a product aimed at more serious listeners. It's also the heavier of the two by a wide margin, at 40 g versus 0.02 kg, though that's mostly the cable and kit.
• Best for older Galaxy phones (S8/S9/S10/A31/A71) → RS Traders Samsung Earbuds. The 3.5mm jack is the whole point.
• Best for modern jack-less phones (Galaxy S20–S23 Ultra, iPhone 15) → YINYOO KBEAR KS1. USB-C is the only connector it has.
• Best for bass and "fun" sound → YINYOO KBEAR KS1. The V-shape tuning and 10mm PET diaphragm are built for low-end punch.
• Best for calls and hands-free control → RS Traders Samsung Earbuds. In-line mic plus volume, track, and call buttons, with Siri support on iPhone.
• Best for side sleeping and small ears → RS Traders Samsung Earbuds. Three ultra-light silicone tip sizes and a soft, low-profile canal fit.
• Best for running and gym use → YINYOO KBEAR KS1. The listing emphasizes a locked-in fit that stays put during exercise.
• Best for active noise cancellation → YINYOO KBEAR KS1. It lists Active Noise Cancellation, while the RS Traders lists noise control as "None."
• Best for a warranty safety net → YINYOO KBEAR KS1. One-year warranty and a 60-day refund window are stated.
• Best for zero setup → RS Traders Samsung Earbuds. No pairing, no charging, no app — plug and play.
If I had to pick one, I'd buy the YINYOO KBEAR KS1 — but only if my phone has a USB-C port. In my opinion, it's the more interesting product: a real dynamic-driver IEM with deliberate acoustic design, a bass-forward tuning, a proper accessory kit, and a stated warranty. For anyone who cares about how music actually sounds, that's a more rewarding buy than a basic utility earbud.
That said, the RS Traders Samsung Earbuds win on one thing that can't be argued with: it works with the phone you already own if that phone has a 3.5mm jack. If you're on an older Galaxy and just want reliable wired calls and audio with zero fuss, buy the RS Traders instead. Match the connector to your device first — everything else follows.
For sound quality, yes — the KS1 uses a 10mm PET diaphragm dynamic driver with a V-shape tuning built for bass and clear vocals, while the RS Traders is a basic 32 ohm driver aimed at compatibility. But "better" only applies if your phone has USB-C. On an older Galaxy with a headphone jack, the RS Traders is the one that will actually work.
They work with any device that has a standard 3.5mm headphone jack, and the listing names Galaxy S10, S10e, S10+, S9/S9+, S8/S8+, A31, A71, Note 5, Note 8, and Note 9 specifically. Newer jack-less Galaxy models like the S20 and up won't connect without an adapter, since these are wired 3.5mm earbuds.
The listing states Active Noise Cancellation as a control type, so yes, that's how it's specified. The RS Traders Samsung Earbuds, by contrast, list noise control as "None" and rely only on physical canal-fit isolation to block outside sound.
The KBEAR KS1 is the more natural fit for exercise — the listing highlights a locked-in ergonomic fit that won't fall off while running, and the USB-C connection suits modern phones you'd carry to the gym. The RS Traders is better described as a comfort and sleep earbud, thanks to its ultra-light tips and soft fit.
I don't quote prices here because they change often. Check the current price on Amazon using the button on this page before you decide — that's the only reliable way to compare value on the day you buy.
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