How We Research
We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Updated: 2026-09-26 · 8 min read · Independent comparison
• SYNCWIRE Headphone Splitter — biggest strength: a male 3.5mm plug that splits into two female 3.5mm ports, so two people can listen to the same phone, tablet, laptop or console at once, with gold-plated connectors and double shielding aimed at clean stereo on both outputs.
• SYNCWIRE Headphone Splitter — biggest trade-off: it is a passive audio splitter with no microphone support, so it shares sound only — it does not add a mic, controls or a built-in driver, and it needs a 3.5mm source to work at all.
• TOPAUX USB Type C — biggest strength: a self-contained pair of open-ear corded earbuds with a Type-C plug, a dynamic driver, an inline mic with remote controls, adjustable 15-degree over-ear hooks and a storage case.
• TOPAUX USB Type C — biggest trade-off: it is earbuds, not an adapter. It plugs into USB-C audio devices only, and it cannot split one jack into two outputs for two listeners.
• Who each pick is for: SYNCWIRE for anyone who already owns good corded headphones and wants to share the sound; TOPAUX for anyone who needs an actual pair of corded USB-C earphones for voice and listening.
The SYNCWIRE Headphone Splitter is a small, specific tool, and it does that one job well. One male 3.5mm plug goes into your source — a phone, tablet, laptop, MP3 player, PlayStation or Wii — and two female ports come out, letting two pairs of corded headphones or two speakers play the same audio. The housing is compact and light, and the whole point of the design is portability: toss it in a bag for a road trip or a plane ride and two people can watch the same movie without fighting over one earpiece. The listing even frames it around exactly those scenarios — sharing on a flight, in a car, or passing one screen between kids or friends.
The build is where SYNCWIRE puts its effort. The connector is polished and 24K gold-plated, which the spec sheet says is there to keep data transmission accurate and cut signal loss and noise, so both outputs get clear stereo sound. Double shielding adds protection against interference, and the slim connector is sized to fit almost any phone case — the one stated exception is a LifeProof-style case. The cable itself is wrapped in a soft nylon jacket that the manufacturer rates to withstand at least 15,000 cycles of a 90-degree bend test, with a metal housing for extra strength. In practice, that is the difference between a splitter that lives in your bag for years and one that frays in a month.
TOPAUX USB Type C: Who It's For
The TOPAUX USB Type C is not an accessory — it is the whole listening setup. These are open-ear corded earbuds with a fixed USB-C plug, built for phones, tablets and laptops that carry audio over Type-C. Inside is a dynamic driver with a 32-ohm impedance and a frequency range of 20–20,000 Hz, paired with what the spec sheet calls a newest-generation DAC chip, and the goal is lossless-feeling 3D stereo for studying, conferencing, calls, video and gaming. The open-ear, over-ear hook design means nothing is jammed into your ear canal — the hooks sit around the ear instead, and they adjust through a 15-degree range so the same pair can fit a kid or an adult. The listing describes them as lightweight and pressure-free for long sessions, which matters if you wear them through a full school day or a work shift.
The feature list is where these pull ahead of a plain splitter for everyday use. There is a clear microphone and inline remote controls that handle play, pause, answer, end and reject calls, skip tracks, volume up and down, and even wake Siri or the Android voice assistant. That turns them into a headset, not just earphones. The cord is built from oxygen-free copper with a tough wire jacket, and TOPAUX includes a cable fixer clip so you can pin the wire to your clothes and stop it swinging or tangling, plus a PU zipper storage case for carrying. The age range starts at over six years old, and with the back-to-school framing, these are clearly pitched at students and commuters.
Buy them if you want one corded pair that handles calls, music, gaming and live broadcasting without a dongle or a charging routine, and if your device is USB-C. Skip them if your phone or laptop still uses a 3.5mm jack, if you want to share audio between two listeners, or if you specifically want in-ear isolation — these are open-ear by design, and sound isolation is listed as the noise-control approach rather than active cancellation.
• Best for sharing audio with a second pair of corded headphones → SYNCWIRE Headphone Splitter. Two female ports, one male plug, both outputs fed the same stereo signal.
• Best for making calls and taking meetings → TOPAUX USB Type C. It has a clear mic, inline call controls and voice-assistant wake support; the SYNCWIRE splitter has no mic at all.
• Best for students and commuters → TOPAUX USB Type C. Adjustable over-ear hooks, a cable fixer clip and a zipper case are built for a backpack and a full day of wear.
• Best for older gear with a 3.5mm jack → SYNCWIRE Headphone Splitter. It works with anything that has a 3.5mm aux port — phones, tablets, laptops, MP3 players, consoles.
• Best for modern USB-C phones, tablets and laptops → TOPAUX USB Type C. The Type-C plug is the whole connection; no adapter needed.
• Best for travel where two people share one screen → SYNCWIRE Headphone Splitter. The compact, lightweight housing is designed for exactly that.
• Best if you want a complete pair of corded earphones out of the box → TOPAUX USB Type C. The SYNCWIRE unit assumes you already own the headphones.
My Verdict
If I had to pick one, I would buy the TOPAUX USB Type C — but only if my phone, tablet or laptop has a USB-C audio port. It is the more complete product: real drivers, a microphone, inline controls, adjustable hooks and a case, all in one purchase, which covers calls, study, gaming and commuting without extra parts. That said, my recommendation flips entirely if your goal is sharing. For two people on one screen, or for feeding two speakers from a single 3.5mm jack, nothing about the TOPAUX helps you — and the SYNCWIRE Headphone Splitter is the right, purpose-built tool. In my opinion, the deciding question is simply whether you need a listening device or a sharing device. Before you commit, check the current price on Amazon with the button on this page, since that is the one variable I cannot judge for you.
how to wired headphones work
A corded headphone sends an analog audio signal from your device's output jack down a cable to the drivers inside the earcups, which convert the electrical signal into sound. On the SYNCWIRE splitter the signal leaves one male 3.5mm plug and is carried to two female outputs, so two pairs of corded headphones play the same audio. On the TOPAUX USB Type C, the audio arrives digitally through the USB-C plug and is converted inside the earbuds by a built-in DAC chip before reaching the dynamic driver.
how to use wired headphones with iphone
It depends on the port. Older iPhones with a 3.5mm jack can take the SYNCWIRE splitter directly, and it will feed two pairs of headphones or speakers at once. Newer iPhones with only a USB-C port need the TOPAUX USB Type C instead, since its plug is Type-C and the earphones carry their own DAC. If your iPhone has neither a 3.5mm jack nor USB-C audio, a splitter alone will not help.
how to fix wired headphones no sound
Start with the connection, not the headphones. If nothing plays through the SYNCWIRE splitter, check that the male plug is fully seated in the source and that both headphones are pushed all the way into the female ports — this splitter is passive and has no power or controls to reset. If the TOPAUX earbuds are silent, confirm your device actually outputs audio over USB-C, then check the inline remote is not paused and the volume is turned up on the remote itself.
do i need a splitter or a new pair of earphones
Only you can answer that, but the specs make it simple. Buy the SYNCWIRE Headphone Splitter if you already own corded headphones you like and want two people to hear the same source. Buy the TOPAUX USB Type C if you have no earphones, need a microphone and call controls, or your device only has a USB-C port. If you need both sharing and a mic, you will need two separate purchases.
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See also: SYNCWIRE Headphone Splitter vs ASKUBSKU Headphones Earphones, SABRENT USB External vs HAOQUOOU Headphone Splitter 3.5mm, SYNCWIRE Headphone Splitter vs Guguearth iPhone Headphones Earphones