We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Updated: 2026-09-30 · 7 min read · Independent comparison
If you want a modern phone or laptop with no headphone jack to feed a car stereo, home speaker or your favourite wired cans, choose Seulliya USB C; if you need a pair of in-ear wired earbuds with a mic, mute button and in-line controls that plug straight into a trusty 3.5mm port, choose APETOO 3.5mm.
• Seulliya USB C — biggest strength: a built-in DAC that converts a USB-C digital signal into analogue audio and supports up to 24-bit/96 kHz, with MFi-related certification and a smart chip so newer iPhone models connect without a warning pop-up.
• Seulliya USB C — biggest trade-off: it is a cable, not headphones. It only makes sense if you already own wired 3.5mm headphones, earbuds or a stereo with an aux-in port.
• APETOO 3.5mm — biggest strength: it is the complete package — in-ear earbuds with a dynamic driver, 32-ohm impedance, an in-line microphone, mute and volume controls, a 90-degree angled plug, extra ear tips and a mini zipper carry case.
• APETOO 3.5mm — biggest trade-off: it is strictly a 3.5mm product. No adapter, no digital conversion — if your phone dropped the headphone jack, these buds simply will not connect.
• Who each pick is for: Seulliya for the person with a USB-C phone or MacBook and a drawer full of 3.5mm gear; APETOO for the student, office worker or traveller who still has a 3.5mm port and wants earbuds ready out of the box.
The Seulliya USB C to 3.5mm aux cable is essentially a bridge. One end is USB Type-C; the other is a standard 3.5mm aux plug. In between sits an advanced DAC chip that handles the digital-to-analogue conversion, and Seulliya rates it for up to 24-bit/96 kHz playback. That is the whole point of this cable: your phone or laptop sends a digital signal, the chip inside the plug turns it into something your headphones or car stereo can actually play, and you hear music instead of silence.
It does best in three everyday scenarios. First, in the car — plug the USB-C end into your phone and the 3.5mm end into the aux-in port on your stereo, and your existing sound system becomes your music system again. Second, at a desk, where a MacBook, iPad Pro or Pixel with USB-C can drive wired headphones or powered speakers through the 3.5mm jack. Third, on newer iPhones, where Seulliya states the cable has completed MFi certification requirements and uses an original terminal plus a smart chip, so you do not get the "accessory not supported" warning that plagues cheap adapters.
Buy it if you own USB-C devices and want to keep using the wired headphones, earbuds or speakers you already like. Skip it if you have no 3.5mm gear at all, or if your phone still has a headphone jack — then you do not need a converter. Also skip it if you want a microphone and controls on the cable itself; this is an audio-output cable, not a headset cable. The build is black with a USB-C connector on one end, and the cable runs about 39.6 inches, which is generous enough to reach from a pocket to a car dash or from a laptop to a desktop speaker without stretching.
The APETOO 3.5mm wired earbuds are a self-contained listening kit. You get the in-ear buds themselves, a dynamic driver rated at 32 ohms, a gold-plated 3.5mm plug set at a 90-degree angle, an in-line remote with a microphone, volume control and a mute function, two extra pairs of ear tips, and a mini zipper carry case. The enclosure mixes ABS, TPE, copper and silicone, and the finish here is pink — a deliberate style choice rather than a neutral black.
Who should buy these? Students and school kids who need a cheap, replaceable pair for class, library or Chromebook work. Office and remote workers who want a wired headset for Zoom calls and want a mute button within thumb reach. Travellers who want buds that plug into airplane seat jacks, MP3 players and older phones without any adapter. The 32-ohm impedance and dynamic driver are ordinary, sensible specs for a wired in-ear — nothing exotic, but exactly what you want for plugging into a laptop, tablet or handheld console and just having it work. APETOO even lists an 8-month worry-free warranty and packs in extra ear tips, which matters because tips wear out long before the cable does.
Skip these if your phone is a recent iPhone or a jack-less Android — there is no USB-C or Lightning option in the box, and 3.5mm is the only way in. Also skip them if you want over-ear isolation or a premium audiophile tuning; this is a practical everyday pair, not a critical-listening set. And if you need to connect to a car stereo or home amp rather than your ears, you want a cable, not earbuds.
Side-by-Side: Which Should You Choose?
• Best for keeping your existing wired headphones → Seulliya USB C. It adapts what you already own instead of replacing it.
• Best for a complete out-of-the-box listening kit → APETOO 3.5mm. Buds, mic, controls, spare tips and a case in one purchase.
• Best for car stereo and home speakers → Seulliya USB C. The 3.5mm end feeds any aux-in port, and the DAC handles the conversion.
• Best for newer iPhones, iPads and USB-C laptops → Seulliya USB C, which covers iPhone 15 and 16 families, recent Galaxy S and Note models, iPad Pro and MacBook.
• Best for older phones, tablets, MP3 players and consoles with a 3.5mm port → APETOO 3.5mm. No adapter, no setup, just plug in.
• Best for high-resolution audio output → Seulliya USB C, rated up to 24-bit/96 kHz through its DAC chip.
• Best for travel and classroom use → APETOO 3.5mm, with the zipper case, angled plug and spare tips making it easy to live with.
In my opinion, most people asking this question should buy the Seulliya USB C. Here is my reasoning: the modern bottleneck is not sound quality, it is ports. If your phone or laptop has no headphone jack, the Seulliya cable unlocks every 3.5mm device you already own — headphones, car stereo, speakers — for the price of a cable, and its DAC and MFi-related certification address the two things that usually go wrong with cheap adapters. I would only point you to the APETOO 3.5mm if you specifically need new earbuds with a mic and mute, and you have a device with a real headphone jack. Check the current price on Amazon before deciding — that is the one variable I cannot judge for you.
how to use wired headphones without headphone jack
You need a converter that turns your phone's port into a 3.5mm socket. The Seulliya USB C cable does exactly that: USB-C into the phone, 3.5mm into your headphones, with a built-in DAC chip handling the conversion. Seulliya states no software or driver install is needed — it is plug and play.
do i connect my wired headphones to my phone
If your phone has a 3.5mm port, plug straight in — that is what the APETOO 3.5mm earbuds are built for. If your phone only has USB-C, use an adapter cable like the Seulliya, which supports most USB-C phones including recent iPhone and Galaxy models. If your phone has neither port, no wired option will work without the right adapter.
You do not build one — you buy the right cable for the job. If you want to send audio from a USB-C phone to a car or home stereo, the Seulliya cable is the aux cord you need; its 3.5mm end fits any aux-in port. If you just want earbuds for a 3.5mm device, the APETOO buds already have the plug built in.
which one is better for a laptop?
It depends on the laptop. A MacBook with only USB-C ports needs the Seulliya cable to reach wired headphones or speakers. A Chromebook, HP Pavilion or Dell Inspiron with a 3.5mm jack works directly with the APETOO earbuds, which also add a mic and mute for calls. Match the product to the port you actually have.
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