How We Research
We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
If you want to protect and carry your Apple AirPods Max in one tidy kit, choose Polislime Case; if you need to drive wired headphones from a USB-C phone or laptop with serious power, choose BZINK BA36. These two products share a shelf and very little else. One is a 5-in-1 storage and skin system built around a single pair of headphones. The other is a tiny DAC/amp dongle that turns a USB-C port into a proper 3.5mm headphone jack. If you landed here because both showed up while you shopped for "portable headphones," that's the confusion — one is an accessory for headphones you already own, the other is a device that makes headphones sound better. Let me untangle it.
• Polislime Case — biggest strength: A complete 5-in-1 protection set (hard smart case plus silicone covers for headband, ear cups, earpads and top), made specifically for AirPods Max 2020 and 2024, including the USB-C charging port model.
• Polislime Case — biggest trade-off: It does nothing for your audio. It only fits AirPods Max, and it doesn't include the headphones themselves.
• BZINK BA36 — biggest strength: A dual-chip USB-C DAC/amp (CS43131 + SGM8262) with up to 227mW output and a 16Ω–600Ω impedance range, decoding up to 32bit/384kHz for wired listening.
• BZINK BA36 — biggest trade-off: It's a dongle, not a storage solution. It adds nothing in the way of carrying protection and only matters if you have wired headphones to plug in.
• Who each is for: Polislime Case for AirPods Max owners who want their headphones armored and portable. BZINK BA36 for people who want more from wired headphones on a USB-C device.
Think of the Polislime Case as a travel wardrobe for one specific pair of headphones. It's a hard smart case plus a set of silicone add-ons: a headband cover, a pair of ear cup covers, a pair of earpad covers and a top cover. That's the 5-in-1 idea — the case carries the headphones, and the silicone pieces dress them up and shield them at the same time. The case has a double-zipper closure and a carrying strap, so it reads as a grab-and-go bag rather than something you leave on a desk.
There's a practical detail I like: the hard case has a built-in magnet that puts the AirPods Max into sleep mode when you set them inside, and picking them up reconnects them. The silicone covers are designed to work with that — you can leave them on and the sleep behavior still functions. For anyone who has ever stuffed a pair of AirPods Max into a backpack and winced, that combination of a rigid shell and soft skins is the whole point.
The materials are silicone, and the set is described as waterproof and sweatproof, which matters more than it sounds. Ear cushions are the first thing to look grimy after gym sessions or a sweaty commute, and wipeable covers are an easy fix. It's also anti-fingerprint and scratch-resistant by design, so the finish stays clean-looking with minimal fuss.
Who should buy it: AirPods Max owners who travel, commute, or haul their headphones between rooms and want one kit that handles storage and surface protection together — and who specifically have the 2020 or 2024 model, since the silicone is cut to fit the newer USB-C charging port too.
Who should skip it: anyone who doesn't own AirPods Max, and anyone expecting this to improve how their headphones sound. It won't. It's protection and portability, full stop. Also note the headphones are not included — this is the case and covers only.
The BZINK BA36 solves a completely different problem. Modern phones and laptops dropped the headphone jack, and plenty of USB-C-to-3.5mm adapters are passive pass-throughs that do nothing for a demanding pair of headphones. The BA36 is not that. It's an active DAC and amplifier built around a dual CS43131 plus SGM8262 chipset, decoding up to 32bit/384kHz. In plain terms, that's the kind of spec sheet you'd associate with serious Hi-Res listening rather than a throwaway dongle.
The number that jumps out is output power: up to 227mW at 32Ω, with support for headphones from 16Ω all the way to 600Ω. That range is the real story. It means the BA36 is meant to drive not just easy in-ear monitors but high-impedance over-ear headphones that ordinary phone outputs simply can't push. If you've ever plugged a serious pair of headphones into a phone and gotten thin, quiet, lifeless sound, that's exactly the gap this device targets.
The noise figures back up the intent: greater than 125dB SNR/DNR and -110dB THD+N. Those are clean-signal numbers, which is what you want for gaming, critical listening or studio-style work where hiss and distortion are the enemy. It's plug-and-play over USB-C with no driver install, compatible with iPhone 15 series, Android phones, iPad, tablets and USB-C laptops.
Who should buy it: anyone with wired headphones and a USB-C device who wants more volume headroom, cleaner background and better dynamics — gamers, commuters, and listeners who care about how their existing headphones perform.
Who should skip it: people who only use wireless headphones, and anyone who needs a carry case rather than a signal chain upgrade. It also won't help headphones that are already easy to drive if you're perfectly happy with your current sound.
Side-by-Side: Which Should You Choose?
• Best for protecting AirPods Max → Polislime Case. The hard shell plus silicone covers is purpose-built for that.
• Best for driving high-impedance wired headphones → BZINK BA36. Up to 227mW and a 16Ω–600Ω range is the deciding factor.
• Best for travel and commuting with AirPods Max → Polislime Case. Double zipper, strap, and sleep-mode magnet make it a bag-ready kit.
• Best for cleaner audio and low noise → BZINK BA36. The >125dB SNR/DNR and -110dB THD+N figures point to a quiet, low-distortion signal.
• Best for sweat and grime resistance on earpads → Polislime Case. The silicone covers are waterproof and sweatproof by design.
• Best for plug-and-play across devices → BZINK BA36. No driver needed, works with iPhone 15 series, Android, iPad, tablets and USB-C laptops.
• Best for a complete all-in-one kit → Polislime Case. Five pieces cover storage and surface protection in one purchase.
• Best if you own no AirPods Max → BZINK BA36. The Polislime set simply won't fit anything else.
My Verdict
In my opinion, the right pick comes down to one question: are you protecting headphones or improving them? If you own AirPods Max and want them carried safely with earpads that stay clean, I'd buy the Polislime Case — it's a tidy, single-purchase solution built for exactly that pair. If your goal is better sound from wired headphones on a USB-C phone or laptop, I'd buy the BZINK BA36 instead, because the dual-chip design and 227mW output do something a case can never do. They aren't really competitors, so buy the one that matches your actual problem.
how to use external headphones on mac
If your Mac has a headphone jack, wired headphones plug straight in. If it only has USB-C, a USB-C to 3.5mm adapter like the BZINK BA36 works plug-and-play with no driver install, so you can connect wired headphones through the USB-C port directly.
how to connect c port headphones
USB-C headphones or a USB-C to 3.5mm adapter connect to any USB-C port on phones, tablets or laptops. The BZINK BA36 is a plug-and-play USB-C to 3.5mm adapter compatible with iPhone 15 series, Android devices, iPad, tablets and USB-C laptops — no setup required.
how to connect mobile headphones
On a phone with a headphone jack, just plug in. On a USB-C phone without one, use an adapter — the BA36 accepts headphones from 16Ω to 600Ω, so both easy in-ear models and high-impedance over-ears work through the same dongle.
how to pack headphones
For AirPods Max, a rigid case is the safe route: the Polislime Case has a double zipper, a carrying strap and a magnet that triggers sleep mode when the headphones go in, plus silicone covers that stay on while packed. Skip loose backpacks if you care about scratches.
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.
See also: ATK N9 vs Gamrombo Gaming Headset, AUDIO 2000'S Audio2000'S vs beyerdynamic DT 770, Mozff 2 vs LVKAYCE Hard Headphone Headset, iHoto USB C Headphones vs AIFEIMEI Earbuds