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If you want to keep a wired 3.5mm headphone setup alive while your phone charges, choose Criello USB C; if you need to run USB-C headphones and fast charging at the same time with the highest charging headroom, choose Marsno USB C Splitter. They look like the same idea on paper. They are not the same product, and the difference matters the second you plug in.
• Criello USB C — biggest strength: it turns one USB-C port into a 3.5mm aux jack and a charging port, with a DAC rated to 24bit/48kHz and PD charging up to 30W. It keeps older wired headphones and car aux cables in the game.
• Criello USB C — biggest trade-off: it is built around a 3.5mm analog jack, not a second USB-C port, so it will not feed USB-C headphones. Charging tops out at 30W PD.
• Marsno USB C Splitter — biggest strength: PD fast charging up to 60W while you listen, with a HiFi DAC, aluminium connectors and a reinforced braided cable. Best-in-class charging headroom of the two.
• Marsno USB C Splitter — biggest trade-off: it splits into one USB-C audio port and one USB-C charging port only. No data transfer, no video, no dual-headphone use, and it is missing from a long list of devices (OnePlus, Nintendo Switch, Motorola, Amazon Fire Max, Dell XPS 15 and more).
• Pick Criello USB C if you own 3.5mm headphones or use an aux cable in the car and want to charge at the same time.
• Pick Marsno USB C Splitter if you own USB-C headphones, want 60W PD charging alongside them, and your phone is on the compatibility list.
Criello solves a very specific annoyance: the phone with no headphone jack. The adapter splits your single USB-C port into two jobs — a 3.5mm audio jack and a charging input — so you can listen and top up at once. The DAC chip inside handles the digital-to-analog conversion and is rated for high-resolution output up to 24bit/48kHz with noise reduction. In plain terms, that spec is well beyond what streaming music and phone calls actually deliver, so the headroom is there rather than being the bottleneck.
Compatibility is broad: iPhone 15/16/17 Pro/Plus/Pro Max, the Samsung Galaxy S21 through S23 family plus Note 20/10, iPad mini 6, iPad Pro 2020–2022, iPad Air 4/5/6, iPad 2022, MacBook Pro/Air, XPS 13/15/17, and various Huawei models.
Buy it if you have wired 3.5mm headphones, earbuds, or a car aux cable and you want to charge while you listen. Skip it if your headphones are USB-C, or if you need more than 30W of charging headroom.
Marsno USB C Splitter: Who It's For
Marsno attacks the same problem from the other direction. Its splitter gives you one USB-C audio port and one USB-C charging port. If your headphones are USB-C — increasingly common — this is the adapter that makes sense, because Criello's 3.5mm jack simply cannot accept them. The DAC here is described as a HiFi chip delivering lossless audio with emphasised bass and detail, and the noise-reduction circuitry is aimed at keeping that clean while power flows.
The headline number is charging: PD up to 60W. That is double Criello's ceiling, and it matters if you are plugging into a laptop-class charger or a high-wattage brick. The build is aluminium alloy connectors with a reinforced braided cable — braiding is a real durability upgrade over plain TPE for something that lives in a pocket or a bag. Marsno backs it with a 24-month warranty and round-the-clock support, plus a metallic black finish.
The fine print is where you need to pay attention, and Marsno is unusually upfront about it. No data transfer. No video output — no HDMI, VGA, DisplayPort, printers or drives. Not for two headphones or two chargers. Not compatible with OnePlus phones, Amazon Fire Max, GoPro, Nintendo Switch, Motorola devices, cameras, projectors, dash cams or Dell XPS 15. On iPad Pro 2018, calling and inline controls do not work. External microphones are out. And if power is removed mid-use, the headset stops until you reset playback — a deliberate protection behaviour, but a surprise if you do not expect it.
Buy it if you use USB-C headphones, want 60W PD charging alongside them, and your device is on the compatibility list. Skip it if you are on OnePlus or Motorola, game on a Switch, or need data or video passthrough.
• Best for 3.5mm headphones and aux cables → Criello USB C. It is the only one of the two with an actual 3.5mm jack.
• Best for USB-C headphones → Marsno USB C Splitter. Criello physically cannot do this.
• Best charging headroom → Marsno USB C Splitter. PD 60W versus Criello's PD 30W.
• Best for carrying two setups → Criello USB C. It comes as a 2-pack; Marsno is a single unit.
• Best cable durability → Marsno USB C Splitter. Reinforced braided cable beats plain TPE for daily pocket abuse.
• Best for calling and inline controls on iPhone 17/16/15 and modern Galaxy → Criello USB C. Marsno restricts calling on some iPad models and notes calling limits with 3.5mm-jack phones.
• Best warranty length → Marsno USB C Splitter. 24 months versus Criello's 1 year.
• Best for the widest device list → read both lists carefully. Marsno excludes several popular brands outright; Criello's listed compatibility is broader with fewer carve-outs.
In my opinion, the deciding question is not charging speed — it is what is on the end of your cable. If you own 3.5mm headphones or plug into a car aux jack, I would buy the Criello USB C. It does the one thing Marsno cannot, it comes as a two-pack, and 30W PD is plenty for a phone. If your headphones are USB-C and you want the fastest charging alongside them, I would buy the Marsno USB C Splitter — but only after checking your phone against its compatibility list, because its exclusions are real. Check the current price on Amazon before you commit, then buy the one that matches your headphones.
how to fast charge bose headphones
Fast charging depends on the adapter and the charger behind it, not the headphones alone. The Marsno splitter supports PD up to 60W and the Criello supports PD up to 30W, so pair either with a PD charger and a PD-rated cable. Remember both are audio-and-charging adapters, not battery packs — the power still comes from your wall brick.
how to charge headphones faster
Use a PD charger and a PD-rated cable, and pick the adapter with more headroom. The Marsno USB C Splitter handles PD up to 60W, which is the higher ceiling of the two. The Criello USB C caps at 30W PD, which is still quick for a phone but leaves less room for high-wattage bricks.
how to charge headphones
Plug your charger into the adapter's charging port, plug your headphones into the audio port, then plug the adapter into your device. Criello uses a 3.5mm jack plus a charging input; Marsno uses one USB-C audio port plus one USB-C charging port. Neither supports data transfer, so this is for listening and power only.
is fast charging bad for headphones
The charging current goes to your phone, not your headphones, so the adapter's PD rating is about how fast your device refills. Criello states its chip stabilises charging voltage and current to protect your devices, and Marsno notes it cuts the headset if power is removed, as a protective measure. In my opinion, matching a reputable PD adapter to the splitter's stated rating is the sensible approach.
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