We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Updated: 2026-09-30 · 7 min read · Independent comparison
If you want wired, bass-forward in-ear monitors with a detachable cable and a proper 3.5 mm jack, choose YINYOO KBEAR KS1; if you need wireless freedom with a 2.4 GHz dongle, a low-latency game mode you can toggle in an app, and four microphones for clear voice chat, choose Middle Rabbit SW4. These two solve completely different problems, and once you see what each was built for, the low latency gaming question basically answers itself.
• YINYOO KBEAR KS1 — biggest strength: a wired 3.5 mm connection with a dynamic driver tuned for punchy, tight bass and forward vocals, plus a detachable cable and aluminum/copper housings. Biggest trade-off: it's wired-only and has no microphone, so it's for listening, not talking.
• Middle Rabbit SW4 — biggest strength: true low-latency wireless gaming via a 2.4 GHz USB dongle, plus Bluetooth 5.1, an app-controlled Game Mode, and four microphones (two per earbud). Biggest trade-off: it runs on battery, so it needs charging, and it's plastic-bodied rather than metal.
• YINYOO KBEAR KS1 is for you if you game or listen on a device with a headphone jack and want zero charging, zero pairing, and a bass-forward IEM you can re-cable later.
• Middle Rabbit SW4 is for you if you game or work on a PC or laptop and want cable-free audio with a mic for voice chat and calls.
• The low latency angle: the SW4 addresses it directly with 2.4 GHz tech and a 40 ms latency figure; the KS1 sidesteps it entirely because a wired analog connection has no wireless delay to manage.
The KBEAR KS1 is a wired in-ear monitor built around a single dynamic driver. Its tuning is deliberately bass-leaning but not muddy: tight low end, smooth mids, and highs that don't fatigue the way aggressive V-shaped IEMs often do. Vocals sit forward in the mix, which is a nice trait if you play story-driven games, listen to a lot of vocal-heavy music, or want footsteps and dialogue to read clearly without cranking the volume.
Buy it if you want a wired, bass-forward IEM for single-player gaming, music, or handhelds, and you like the idea of a replaceable cable and metal housings. Skip it if you need a microphone, want wireless convenience, or game on a device with no headphone jack. Also note the manufacturer's own gentle reminder to rest your ears every couple of hours and to lower your volume before plugging in — sensible advice for any IEM.
Middle Rabbit SW4: Who It's For
The SW4 is a wireless earbud system aimed squarely at PC and laptop use, and the low-latency gaming story is its headline. It ships with a 2.4 GHz USB dongle for plug-and-play use, plus Bluetooth 5.1 for everything else, and the listed audio latency is 40 milliseconds — a figure that only matters in wireless mode, since that's where delay lives. There's also a Game Mode you switch to through the Middle Rabbit app, alongside Music Mode, and the same app lets you remap touch controls and check earbud battery levels.
Audio comes from 10 mm dynamic drivers with a 32 ohm impedance and a 20 Hz–20,000 Hz range. The bigger differentiator for gaming and calls is the microphone array: four mics total, two in each earbud, which is the kind of setup that helps your voice cut through in Discord, Zoom, Webex, or Skype. Passive noise cancellation handles some ambient bleed, and touch controls cover playback and volume.
Battery is where you need to set expectations. The listed average life is 5 hours per charge with a 1.5-hour charge time, and the case adds three extra charges for up to 30 hours total — the manufacturer's own description and the spec sheet don't perfectly agree on per-charge numbers, so treat 5 hours as the conservative figure. The package includes the charging case, a USB-C cable, a USB-C to USB-A adapter, the dongle, earbuds, and silicone tips, with a 1-year warranty. Housings and case are plastic.
Buy it if you game or work on a PC or laptop, want a mic for team chat and meetings, and value cable-free movement plus an app that lets you tune the experience. Skip it if you hate charging earbuds, want metal build quality, or game on a device with no USB port and no Bluetooth.
Side-by-Side: Which Should You Choose?
• Best for zero-latency, zero-charging simplicity → YINYOO KBEAR KS1. A wired 3.5 mm connection has no wireless delay and never runs out of battery.
• Best for voice chat and calls → Middle Rabbit SW4. Four microphones, two per earbud, versus no mic at all on the KS1.
• Best for bass-forward music and single-player immersion → YINYOO KBEAR KS1. Tight, punchy low end with forward vocals.
• Best for PC and laptop work setups → Middle Rabbit SW4. Built around USB dongle and Bluetooth connectivity for computers.
• Best for durability and repairability → YINYOO KBEAR KS1. Aluminum and copper housings with a detachable cable.
• Best for long sessions away from a charger → Middle Rabbit SW4. Up to 30 hours total with the case, though per-charge life is modest.
• Best for handhelds and consoles with a headphone jack → YINYOO KBEAR KS1. Easy to drive at 18 ohm and 109 dB.
• Best for touch-control tinkerers → Middle Rabbit SW4. The app lets you remap controls and switch sound modes.
If your priority is low-latency gaming on a PC or laptop — especially if you're in voice chat — I'd buy the Middle Rabbit SW4. The 2.4 GHz dongle, 40 ms latency figure, Game Mode, and four-mic array are exactly the toolkit that scenario needs, and the app control is a genuine convenience. If you game on a handheld or console with a headphone jack, don't need a mic, and want a bass-forward IEM that never asks to be charged, I'd buy the YINYOO KBEAR KS1 instead. In my opinion these aren't really competitors so much as two answers to two different questions — pick based on whether your bottleneck is wires or wireless delay.
FAQ
what is low latency gaming in earbuds
which low latency is best for gaming earbuds
For gaming, a dedicated 2.4 GHz connection generally beats standard Bluetooth because it's built for lag-free audio. The SW4 pairs a 2.4 GHz dongle with a Game Mode you enable in the Middle Rabbit app. The KS1 takes the other route: a wired 3.5 mm jack, which sidesteps latency by not being wireless in the first place.
what is low latency gaming mode in earbuds
It's a setting that prioritizes minimal audio delay over other processing. On the Middle Rabbit SW4 you switch between Music Mode and low-latency Game Mode through the app, and you can also adjust touch controls and check battery there. It's a toggle, not a permanent state, so you can go back to music tuning when you're done playing.
do I need a mic for gaming earbuds
It depends on how you communicate. The Middle Rabbit SW4 includes four microphones — two per earbud — for clear voice in calls and team chat. The YINYOO KBEAR KS1 is a "without Mic" model, so if you need to talk, you'd pair it with a separate microphone. For solo gaming, the KS1's lack of a mic is a non-issue.
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