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We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Updated: 2026-09-28 · 7 min read · Independent comparison
• MINISO MS217 — biggest strength: a genuine 4-in-1 design (sleep earbud, AI translation earbud with 165 languages and 8 modes, music earbud, call headset) with ultra-soft 3g silicone shells made for side sleepers.
• MINISO MS217 — biggest trade-off: its noise cancelling is passive (rated around 25dB of blocking), not active — so it dulls noise through fit and material rather than cancelling it electronically, and it has no transparency mode.
• Back Bay Audio True — biggest strength: true active noise cancelling with a Transparency Mode you can switch on to hear ambient sound, plus Bluetooth 5.4 and 20ms low latency for games and movies.
• Back Bay Audio True — biggest trade-off: it's a general-purpose listening earbud, not a sleep-specific one — no translation features, and the battery story is shorter per charge (5 hours per bud, 25 hours total from the case).
• Pick MINISO MS217 if you want one small device for sleeping, side-sleeping comfort, language learning and live translation.
• Pick Back Bay Audio True if you want the classic commute/travel/gaming ANC earbud that lets ambient sound back in when you need it.
MINISO MS217 is not really an "ANC earbud" at all — it's a multi-purpose tool, and that's the whole point. The headline feature is the 4-in-1 concept: a sleep headphone, an AI translation earbud covering 165 languages across 8 modes through the Saymi app (no subscription), a music earbud, and a hands-free calling headset. If you've ever thought "I want my sleep buds to also do something useful during the day," this is the pitch.
The sleep angle is where the design details matter. Each earbud weighs about 3g, and the shells are soft, skin-friendly silicone that conforms to the ear's natural contours. MINISO specifically frames these as side-sleeper earbuds — the idea being zero pressure when your ear is pressed into a pillow, so you can wear them all night and they stay put when you toss and turn. Battery supports that: 7 hours of continuous playback on a single charge, which comfortably covers a full night, and the case stretches the total to 48 hours. Bluetooth 6.0 handles the connection side, and there's ASMR sleep sound support built into the experience.
Who should buy it? Side sleepers, snorers-adjacent households, students and travelers who actually want the translation feature, and anyone who wants one lightweight device for sleep, work and study rather than three. Who should skip it? If you want strong electronic noise cancelling for a loud commute or a plane cabin, or you want to flick into a transparency mode to hear announcements, this isn't that product — MINISO's approach is passive blocking plus a snug fit. Translation is also app-dependent, so if you don't want to use the Saymi app, you're paying for a feature you won't use.
Back Bay Audio True is a straightforward, well-specified ANC earbud. The core promise is active noise cancelling without head pressure — Back Bay says the tuning was refined in Boston with A.I. helping cancel noise from planes, trains and traffic, specifically to avoid the headache some ANC earbuds cause. Whether that lands for you is a fit question, but the intent is clear: cut the rumble, keep the comfort.
The feature that matters most in this comparison is Transparency Mode. Switch it on and the noise cancelling turns off so you can clearly hear ambient sound through the in-ear headphones. That's the flip side of the coin versus MINISO: the MS217 gives you passive blocking with no electronic passthrough, while the True gives you both electronic cancellation and an ambient sound mode. For anyone who wears earbuds on a train platform, in an office, or while walking a city street, that single toggle is the difference between "I have to take one out" and "I just tap."
Elsewhere it's a solid everyday listening package: Bluetooth 5.4 with 20ms low latency for gaming and movies, dual microphones for calls, and two tunings — the "Signature Sound" and a switchable Bass Mode. Battery is 5 hours per earbud, 25 hours total from the case, and QuickCharge gives you 2 more hours from a 15-minute top-up. The buds are 4g each, in-ear with a bud shape, 10mm dynamic drivers, touch controls, no headphone jack, and a 30-foot Bluetooth range. It ships with a charging case and a 1-year warranty.
Who should buy it? Commuters, travelers, gamers, movie watchers, and anyone who wants real ANC plus the option to let the world back in. Who should skip it? Sleep-focused buyers — there's no side-sleeper design story here, no translation, and no ASMR/sleep framing. If you sleep on your side with buds in, MINISO's shape is the more considered choice.
• Best for side sleepers and all-night wear → MINISO MS217. 3g silicone buds designed around pillow pressure.
• Best for ambient sound mode / transparency → Back Bay Audio True. Transparency Mode actively pipes the outside world in; the MS217 has no equivalent.
• Best for active noise cancelling → Back Bay Audio True. Electronic ANC versus MINISO's passive ~25dB blocking.
• Best for total battery → MINISO MS217. 7 hours per charge and up to 48 hours with the case, versus 5 hours and 25 hours.
• Best for gaming and video → Back Bay Audio True. Bluetooth 5.4 with 20ms low latency.
• Best for travel, translation and language learning → MINISO MS217. 165 languages, 8 modes, no subscription via the Saymi app.
• Best for calls → a tie, with different tools. MINISO leans on a hands-free calling mode; Back Bay uses dual microphones.
• Best for a single-purpose, tune-it-your-way listener → Back Bay Audio True. Signature Sound and Bass Mode are there to be switched.
In my opinion, the deciding question is what you actually do with earbuds in your ears. If you sleep on your side, want buds that disappear against the pillow, and like the idea of live translation in 165 languages bundled in, I'd buy the MINISO MS217 — the 3g silicone fit and 7-hour nightly playback are built for exactly that job, and 48 hours total means you're not hunting for a charger every day.
But if "ambient sound mode" is what you're actually shopping for — the ability to cancel noise on a plane and then hear the platform announcement two seconds later — I'd buy the Back Bay Audio True. Transparency Mode, real ANC, Bluetooth 5.4 and 20ms latency make it the more capable everyday earbud. Two different tools. Buy the one that matches your day.
FAQ
what is ambient mode on earbuds
what is ambient sound mode in earbuds
It's the same idea under a different name: a mode where the earbuds stop blocking the world and instead let you hear traffic, conversations or announcements clearly while you keep them in. It's useful for commuting, offices and safety. Among these two, only the Back Bay Audio True has it.
what is ambient mode in earbuds
Functionally, ambient mode is the opposite of noise cancelling — noise cancelling pushes the outside world away, ambient mode pulls it back in. If that feature is a must-have for you, the Back Bay Audio True is the pick; if you'd rather have sleep comfort and translation, the MINISO MS217 is the pick. Check the current price on Amazon before you commit, since that's the one thing specs can't tell you.
For the translation features, yes — the 165 languages and 8 modes run through the Saymi app, with no subscription required. The earbuds still work as Bluetooth 6.0 music and call earbuds without it, so you're not locked out of basic listening.
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