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We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Updated: 2026-09-23 · 7 min read · Independent comparison
• Ganlaila USB C — biggest strength: a true 2-in-1 design with a dedicated PD 60W charging port plus a separate 3.5mm jack and built-in DAC, so you can charge and listen at the same time without swapping cables.
• Ganlaila USB C — biggest trade-off: it offers exactly two ports and no Lightning input, so it is strictly for USB-C phones, tablets and laptops with a 3.5mm or USB-C audio device.
• caojunzhen 2 — biggest strength: five ports and the widest connector mix here — USB-C and Lightning charging inputs, a 3.5mm jack and a USB-C headphone jack, with DAC figures of 16-bit/192kHz or 24-bit/96kHz plus a 16-bit/48kHz ADC.
• caojunzhen 2 — biggest trade-off: more ports mean more hardware to manage, and the brand itself notes that fast charging depends on pairing it with a PD wall charger.
• Who each pick is for: Ganlaila USB C for the minimal, single-cable listener who wants charging and audio in one tidy piece; caojunzhen 2 for the household or traveler juggling both Lightning and USB-C devices who wants extra headphone options.
Ganlaila USB C is a focused little problem-solver. The whole idea is the classic USB-C headache: on a phone or tablet with no headphone jack, you normally have to choose between charging and plugging in wired headphones. This adapter splits one USB-C connection into two jobs — a PD 60W fast charging port and a separate 3.5mm audio jack driven by a built-in DAC chip. The port layout is simple: two ports, USB-C in, audio and power out. The body is a gray metallic finish wrapped in reinforced braided nylon, with thickened pure copper cores inside, and it measures roughly 4.72 x 0.79 x 0.39 inches — small enough to leave dangling from a phone in a pocket. It's rated for 20 volts input and 3 A of current, with a nominal power figure of 18 watts and a one-year limited manufacturer warranty.
Buy it if you live on USB-C. The compatibility list runs from iPhone 16/15 series (the USB-C models), iPad Pro/Air/Mini, Samsung Galaxy S24/S23, Google Pixel 9/8 and up through laptops and tablets — anything with a Type-C port. Skip it if you still carry Lightning devices, since it has no Lightning connector at all, and skip it if you want to plug in two headphones or a memory card at once — two ports is the entire design. In my opinion, this is the pick for someone who wants one cable, one adapter, and no dongle drawer.
caojunzhen 2: Who It's For
caojunzhen 2 goes the opposite direction: it's a multi-tool. The "2 + 3" name describes its layout — USB-C and Lightning to USB-C charging inputs, a 3.5mm headphone jack, and a USB-C headphone jack, five ports in total on a single red adapter. That means you can charge and listen simultaneously on an iPhone or an Android phone, and you can plug in either traditional wired headphones or USB-C headphones without hunting for a second dongle. The manufacturer also notes it supports data transfer, which a lot of cheap audio splitters quietly don't.
Charging is handled by a built-in chip that reads the voltage and current each device asks for, then holds the output stable — a design meant to protect your phone rather than just shove power at it. caojunzhen rates the adapter at 60W fast charging and states plainly that you should pair it with a PD wall charger to actually get fast charging. That's an honest, useful caveat: the adapter negotiates, but the charger supplies.
Audio specs are spelled out more precisely than most budget adapters bother with: support for 16-bit/192kHz or 24-bit/96kHz DACs and a 16-bit/48kHz ADC, positioned as stable, high-quality transmission without electrical noise. Compatibility is the real selling point — the list covers iPhone 16/15 Pro Max down through the 7 and 7 Plus, plus a long run of Galaxy models (S25/S24/S23/S22 series, Z Flip, Note20 Ultra, S20 down to S8) and Google Pixel 8/7 XL.
Side-by-Side: Which Should You Choose?
• Best for charging while listening on USB-C alone → Ganlaila USB C, thanks to its dedicated PD 60W charging port plus separate 3.5mm jack.
• Best for mixed Lightning and USB-C households → caojunzhen 2, which accepts both charging connectors on one adapter.
• Best for headphone flexibility → caojunzhen 2, since it offers both a 3.5mm jack and a USB-C headphone jack; Ganlaila offers 3.5mm only.
• Best for the cleanest, most pocketable setup → Ganlaila USB C, with a two-port body measuring about 4.72 x 0.79 x 0.39 inches and a braided nylon, alloy-shell build.
• Best documented audio specs → caojunzhen 2, which lists DAC figures of 16-bit/192kHz or 24-bit/96kHz and a 16-bit/48kHz ADC.
• Best for gaming and live streaming while powered → Ganlaila USB C, which specifically calls out low-latency audio and keeping a device charged during streams.
• Best for older iPhones → caojunzhen 2, whose compatibility list reaches back to the iPhone 7 and 7 Plus.
• Best for data transfer alongside audio → caojunzhen 2, which notes data transfer support as part of its feature set.
If I had to pick one, I'd take Ganlaila USB C for a straightforward reason: it does the one job most people actually need — charge and listen on a USB-C device at the same time — with a dedicated 60W PD port, a braided build and a one-year limited manufacturer warranty. I'd recommend caojunzhen 2 instead if you're the person with an iPhone in one pocket and an Android in the other, or if you own both 3.5mm and USB-C headphones, because five ports and dual charging inputs simply cover more ground. Decide by your connector drawer, not by the spec sheet length.
FAQ
How to fast charge bose headphones
How to charge headphones faster
Use a PD wall charger and a cable rated for the current your device draws. Both adapters here are built around PD fast charging — Ganlaila at 60W and caojunzhen 2 at 60W with a chip that matches voltage and current to the device.
How to charge headphones
Plug the adapter into your phone's USB-C or Lightning port, connect a PD charger to the charging input, and connect your headphones to the 3.5mm or USB-C audio jack. Ganlaila USB C has two ports; caojunzhen 2 has five, including both audio jack types.
Is fast charging bad for headphones
The adapters are designed to negotiate the voltage and current a device requests rather than force a fixed output, and caojunzhen 2 explicitly describes this protection behavior. Ganlaila USB C is rated at 20 volts input and 3 A with an 18W nominal figure, so the adapter itself is not over-driving your gear.
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See also: JSAUX USB C vs Eusbote Type C: Fast Charge Headphones, Faqqz USB C Fast vs BUGANI Open Ear Earbuds: Fast Charge, MKJ USB Headset vs Callez RJ9: Call Center Headphones