We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Updated: 2026-09-21 · 7 min read · Independent comparison
If you want wired, high-fidelity listening with a proper DAC and a cable you can swap out, choose Audiovance Vibes 202MC; if you need tiny wireless buds you can wear lying on your side all night, choose goazzzl Sleep Earbuds.
• Audiovance Vibes 202MC — biggest strength: a wired USB-C design built around a 1-Tesla dynamic driver and a 384kHz/32-bit DAC chip, with a detachable silver-plated Litz cable and a 16-ohm impedance that makes it easy to drive.
• Audiovance Vibes 202MC — biggest trade-off: it is wired, so it is tethered to a USB-C device, and it will not work with older iPhones (the brand points iPhone 5–14 owners to a different model).
• goazzzl Sleep Earbuds — biggest strength: a genuinely tiny, wireless, side-sleeper-friendly shape with soft silicone tips, touch controls and IPX5 water resistance.
• goazzzl Sleep Earbuds — biggest trade-off: battery life is quoted at around 6 hours per charge, so it is not a marathon-listening product, and it relies on Bluetooth rather than a lossless wired signal.
• Who each is for: pick the Audiovance for sound quality and zero-latency wired listening on modern USB-C gear; pick the goazzzl for sleeping, side-sleeping and discreet everyday wear.
The Vibes 202MC is a wired in-ear monitor aimed squarely at people who care about the signal chain. Inside sits a 1-Tesla dynamic driver paired with a 384kHz/32-bit DAC chip, and the acoustic chambers are tuned to cover an unusually wide 8Hz–23kHz range. That is a genuine high-resolution claim, and it is backed up by the cable: a silver-plated, Litz-braided cord with 24K gold-plated plugs, designed for clean, stable, low-loss transmission. In my opinion, this is the pick if you want the kind of detail and separation that a small wireless bud simply cannot deliver over Bluetooth.
Comfort and isolation are handled with care too. The buds use preformed over-ear earhooks to keep the cable out of the way and lock the fit in place, and Audiovance includes six pairs of soft eartips across three sizes and two colors. That matters more than it sounds — a proper seal is what gives you the bass and the passive noise isolation, and the brand's own guidance is to try the tip sizes and seat the buds snugly. The MMCX connector is 360° rotative, so the cable can be angled to suit your ears, and it is detachable, which is a real long-term plus for a wired product.
Who should buy it? Anyone on a modern USB-C device — iPhone 15/16/17, Samsung Galaxy, iPad, MacBook, Pixel — who wants plug-and-play audio with no battery, no pairing and no charging case. The inline remote handles volume, playback and calls. It ships with a 63-inch detachable cable, a carrying case and a carabiner. Who should skip it? If you own an iPhone 5 through 14, this model is not for you — Audiovance explicitly points those users to the Vibes 202ML instead. And if you want to move around untethered or fall asleep on your side, the cable will get in the way.
The goazzzl Sleep Earbuds are designed around one job: being small enough to disappear in your ear and comfortable enough to leave in overnight. The body is deliberately compact and ergonomic, and the ultra-soft silicone eartips and caps are shaped to stay put even for side sleepers. That is the headline feature, and it is the reason this product exists. If you have ever woken up because a normal earbud jammed into your ear canal, this category of bud is the fix.
On the audio side, goazzzl uses an advanced speaker and acoustic cavity design to deliver clear, balanced sound while reducing sound leakage — a useful trait when you are sharing a bed and do not want to disturb anyone. Impedance is listed at 28 ohm. There is no DAC or wired option here; this is a Bluetooth product, so expect the usual wireless conveniences and the usual wireless compromises. Connection is handled by one-step auto pairing: take the buds out of the charging case and they reconnect to your last device. Touch controls let you play and pause, adjust volume, take calls and trigger a voice assistant, and the buds work with iOS, Android, Mac and most Bluetooth gear.
Battery life is quoted at around 6 hours of average use, which comfortably covers a night's sleep for most people but is not all-day stamina. IPX5 water resistance means sweat and light rain are fine, so workouts and travel are in scope. The package includes the two buds, a wireless charging case, a USB-C charging cable and a manual, and it is backed by a 3-year manufacturer warranty. Who should buy it? Side sleepers, light sleepers who want low-leakage audio, and anyone who wants a discreet bud for commuting or the gym. Who should skip it? If you want lossless, wired, high-resolution sound, this is not the tool — 6-hour Bluetooth playback simply is not that.
Side-by-Side: Which Should You Choose?
• Best for sound quality and detail → Audiovance Vibes 202MC, thanks to the 1-Tesla driver, 384kHz/32-bit DAC and silver-plated Litz cable.
• Best for modern USB-C phones and laptops → Audiovance Vibes 202MC, which is plug-and-play on iPhone 15/16/17, Galaxy, Pixel, iPad and MacBook.
• Best for older iPhones (5–14) → neither, strictly speaking — Audiovance directs those users to its Vibes 202ML model; the goazzzl works over Bluetooth instead.
• Best for workouts and sweaty use → goazzzl Sleep Earbuds, which carry an IPX5 water-resistance rating.
• Best for zero charging and zero pairing → Audiovance Vibes 202MC, a wired set with no battery at all.
• Best for battery life → goazzzl Sleep Earbuds, though note the quoted figure is only about 6 hours per charge.
• Best for cable durability and repair-ability → Audiovance Vibes 202MC, which uses a detachable 360° rotative MMCX cable.
If I were buying one of these for myself, I would choose the Audiovance Vibes 202MC. In my opinion, the combination of a 1-Tesla driver, a 384kHz/32-bit DAC, a detachable silver-plated Litz cable and six pairs of eartips is the more substantial piece of audio hardware, and the absence of a battery means nothing to charge and nothing to wear out. It is the better buy for anyone who listens critically at a desk, on a plane or in a quiet room with a USB-C device. The goazzzl is the smarter pick only if sleep and side-sleeping are your priority — and for that specific job, it is genuinely well designed. Check the current price on Amazon before you commit, since that is the one thing that can swing this either way.
By design, yes. The Audiovance is a wired IEM with a 1-Tesla driver, a 384kHz/32-bit DAC and a silver-plated Litz cable covering 8Hz–23kHz. The goazzzl is a Bluetooth bud tuned for comfort and low leakage, not resolution.
Can I sleep with the goazzzl Sleep Earbuds on my side?
That is exactly what they are built for. goazzzl uses ultra-soft silicone tips and caps with a compact, ergonomic body intended to stay secure for side sleepers through the night.
Yes, with USB-C iPhones — the 15, 16 and 17 series — plus Galaxy, Pixel, iPad and MacBook. They do not support iPhone 5 through 14, and Audiovance recommends its Vibes 202ML for those models instead.
The rated average battery life is about 6 hours, which covers a typical night's sleep. The wireless charging case lets you top them up, but this is not an all-day listening product.
It depends on your priority, not on the spec sheet. If you want wired high-fidelity audio that never needs charging, the Audiovance is the more capable listen. If you want invisible, wireless, sleep-friendly buds with IPX5 protection and a 3-year warranty, the goazzzl is the better fit. Compare the current prices on Amazon and decide from there.
As an Amazon Associate I earn from qualifying purchases.
We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon and affiliated sites.
When you buy through links on this page, we may earn a commission from qualifying purchases at no extra cost to you.
Amazon and the Amazon logo are trademarks of Amazon or its affiliates. This site is an independent third-party review and is not affiliated with, endorsed by, or sponsored by Amazon or the product brands mentioned.