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We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
If you want active noise cancellation in a semi-in-ear shape with a metal case and the newest Bluetooth on the market, choose iKmai Earbuds; if you need earbuds built for side-sleeping with a featherlight 3-gram fit and longer total battery life, choose Rulbovs NE92.
• iKmai Earbuds biggest strength: Hybrid ANC with 6 MEMS microphones rated to cut noise by up to 25dB, plus Bluetooth 6.0 and a 60ms gaming mode — a proper do-everything earbud.
• iKmai Earbuds biggest trade-off: Semi-in-ear tips don't seal the ear canal the way a sleep-focused bud does, and 6 hours per charge is shorter than the NE92's single-charge figure.
• Rulbovs NE92 biggest strength: A 3-gram-per-bud, ultra-soft silicone design made specifically to stay pressure-free when you lie on your side, backed by 10 hours per charge and 40 hours total.
• Rulbovs NE92 biggest trade-off: The 6mm drivers and adaptive cancellation are tuned around sleep and calm listening, not around gaming latency or maximum isolation.
• Who iKmai Earbuds is for: Commuters, call-heavy workers and gamers who want one pair that handles noise, voice and low-latency audio.
• Who Rulbovs NE92 is for: Side sleepers, light sleepers and small-eared listeners who want something they can forget they're wearing.
The iKmai Earbuds are the more technically loaded pair here. The headline feature is hybrid active noise cancellation driven by six MEMS microphones, which the spec sheet rates at up to 25dB of noise reduction. In practice that's the kind of figure that matters on a bus, in an open-plan office or next to a droning air conditioner — it won't erase the world, but it takes the edge off steady low-frequency noise. The same six-microphone array, paired with noise and echo cancellation algorithms, is also what handles your voice on calls.
The audio side is built around a 13mm dynamic driver with a customized diaphragm, covering a 20Hz–20,000Hz range. That's a full-range tuning, and a 13mm driver is a large one for an in-ear bud, which usually points toward fuller low end than a tiny driver can produce. For gaming there's a dedicated low-latency mode at 60ms, and the connection runs on Bluetooth 6.0 — the newest version listed on either product. Touch controls cover everything you'd want: track skipping, volume, play/pause, ANC on/off/transparency, voice assistant, gaming mode and call handling.
Battery is 6 hours per charge with 22 more in the case, for 28 hours total, and the case itself is metal — ABS, metal and zinc in a metallic grey finish. That's a meaningful durability and feel upgrade over a plastic shell, though it does mean a heavier case in your pocket.
Rulbovs NE92: Who It's For
The Rulbovs NE92 is a specialist, and it's honest about it. The entire design brief is comfort while lying down: a precision-contoured shape, ultra-soft silicone, and just 3 grams per bud. If you've ever woken up because a hard plastic earbud was grinding into your ear on a pillow, that 3-gram figure is the number that should get your attention. The listing describes them as "invisible earplugs" for side sleepers, and the black plastic build keeps the profile low.
Sound comes from 6mm dynamic drivers with a Hi-Fi stereo tuning — smaller than the iKmai's 13mm units, which is the natural trade-off for a bud this tiny. The feature copy claims improved audio quality and rich bass, and honestly, for white noise, meditation tracks, podcasts and audiobooks at bedtime, a 6mm driver is entirely adequate. The dual-microphone setup is rated to cut background noise by 95% for calls, which is a voice-isolation claim rather than a full ANC claim, so read it as "people can hear you" rather than "you hear nothing."
Battery is where the NE92 pulls ahead on paper: 10 hours of playback per charge and 40 hours total with the case, plus USB-C fast charging that reportedly refills in about an hour. Bluetooth 6.0 handles pairing, with a listed range of 33 feet, and touch controls cover play/pause, track skipping, calls, volume and voice assistant. The box includes a lanyard, the sleep earbuds, a USB-C cable, a manual and a wireless charging case.
Buy the Rulbovs NE92 if you sleep on your side, wear buds for hours at a stretch at a desk, or have small ears that normal earbuds punish. Skip them if you want the strongest noise cancellation, the biggest driver, or a low-latency gaming mode.
• Best for active noise cancellation → iKmai Earbuds. Six MEMS mics and up to 25dB of hybrid ANC is a real cancellation system, not just call-noise reduction.
• Best for sleep and side-sleeping → Rulbovs NE92. 3 grams per bud and soft silicone is the whole point of this design.
• Best for total battery life → Rulbovs NE92. 40 hours total versus 28 hours, and 10 hours per charge versus 6.
• Best for call clarity in noise → iKmai Earbuds. Six microphones with echo and noise cancellation algorithms is simply more hardware dedicated to your voice.
• Best for gaming → iKmai Earbuds. A 60ms low-latency mode is a feature the NE92 doesn't offer at all.
• Best for small ears and long wear → Rulbovs NE92. Lightweight and contoured beats big-driver sound if comfort is the thing that makes you take the buds out.
• Best for build quality and case feel → iKmai Earbuds. A metal-and-zinc case with a metallic grey finish will outlast a plastic one in a bag.
• Best for sound scale → iKmai Earbuds. A 13mm dynamic driver against a 6mm one is a big physical difference in how much air gets moved.
In my opinion, the iKmai Earbuds are the pair I'd buy for general use. The 25dB hybrid ANC, six microphones, 13mm driver, 60ms gaming mode and Bluetooth 6.0 make it the more complete product, and the metal case backs that up. I'd only steer you to the Rulbovs NE92 if sleep is the actual job — the 3-gram weight, soft silicone and 40-hour total battery are built for a pillow, not a commute. If you genuinely do both, buy the Rulbovs for bed and the iKmai for everywhere else. Check the current price on Amazon before deciding, since both sit in different budget tiers depending on the day.
FAQ
what are the best in ear noise cancelling earbuds
what are the best over the ear noise cancelling earbuds
Neither product here is an over-ear model — both are in-ear designs, so neither one wraps around your head. If you specifically want an over-ear fit, you'll need to look outside this pair; between these two, the iKmai is the one with the more substantial noise-cancelling hardware.
The Rulbovs NE92 lasts longer on paper: 10 hours per charge and 40 hours total with the case, versus 6 hours per charge and 28 hours total for the iKmai Earbuds. The NE92 also lists USB-C fast charging that reaches full in about an hour.
The Rulbovs NE92, clearly. It's designed around side-sleeping with a contoured shape, ultra-soft silicone and just 3 grams per bud, so it stays pressure-free through the night. The iKmai's semi-in-ear shape and metal-heavy build are aimed at commuting and calls, not bedtime.
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