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If you want to plug three pairs of headphones into one USB-C port and share the same audio with family or friends, choose Poyiccot USB C; if you need a longer, shielded 3.5mm-to-USB-C replacement cable for Marshall Major or Monitor headphones, choose Gneinour Major IV Cable. These two cables sound similar on paper — both are black, both end in USB-C — but they solve completely different problems.
• Poyiccot USB C — biggest strength: one USB-C male plug fans out to three 3.5mm TRS female jacks, so three sets of headphones can listen to the same source at once.
• Poyiccot USB C — biggest trade-off: it is an audio splitter only. It does not charge, it does not carry a mic, and at 30cm/1ft the reach is short.
• Gneinour Major IV Cable — biggest strength: a 4.9ft (1.5m) aux cable with silver-plated and 24K gold-plated connectors, oxygen-free copper cores and multi-layer shielding, built as a like-for-like replacement for Marshall's own cables.
• Gneinour Major IV Cable — biggest trade-off: it is a single-output cable. One plug in, one plug out — no splitting, no sharing.
• Pick Poyiccot USB C if you want shared listening on a phone, tablet or laptop with a USB-C audio port.
• Pick Gneinour Major IV Cable if you own Marshall Major or Monitor headphones and want a longer, tougher cable that also plugs into modern USB-C devices.
The Poyiccot USB C cable is a 1-to-3 splitter. A single USB-C male plug goes into your source device, and three separate 3.5mm TRS female jacks come out the other end. Plug three pairs of wired earphones or headphones into those jacks and everyone hears the same thing. That is the entire job, and it does it without any software or setup — the listing describes it as plug and play, with a connector that stays tight rather than loosening over time.
Who should buy it? Anyone whose device has a USB-C audio port and who needs to share sound in a small group. The brand's own examples are telling: listening together with a partner, sitting with a kid during study time, or passing headphones around on a trip. Compatible devices named in the data include iPhone 16, MacBook and MacBook Pro, and Galaxy S21 FE / S21, plus other USB-C audio devices. The housing is aluminum alloy, which resists scratches better than plain plastic, and the whole thing is small and light at roughly 0.06 kg with a 30cm/1ft cable — easy to drop in a bag pocket.
Who should skip it? If you need charging, this is not your cable. The data sheet is explicit that it is an audio splitter and not for charging, and it is also not a mic cable. If you want to answer calls through a headset mic, or you need a long cable to move around a room, the 30cm length will frustrate you. It is a sharing tool, not a general-purpose cable.
The Gneinour Major IV Cable is a direct replacement for the cable that ships with Marshall headphones. The compatibility list is specific: Marshall Major V, IV, III, II and I, plus Monitor II and Monitor I. If your original cable got lost, chewed up or frayed, this is the part that goes back in the box. One end is 3.5mm, the other is USB-C, which means it works both with the headphones themselves and with modern USB-C sources — iPhone 17 and 16 and 15 series, iPad models, MacBook, Samsung Galaxy, OnePlus and Google Pixel.
The build is where this cable separates itself. Silver-plated connectors and high-purity oxygen-free copper cores are the conductor story; 24K gold-plated connectors and a multi-layer shielding structure are the interference story. In practice that combination is aimed at keeping the signal clean — balanced bass, clear treble, and less pickup of electromagnetic noise from everything else on your desk. Gneinour also claims over 30,000 bend tests with reinforced connectors and wear-resistant PVC jacketing, which speaks to the failure point that kills most headphone cables: the spot where the wire meets the plug.
Who should buy it? Marshall owners first, obviously. But also anyone who wants a 1.5m aux cable with a USB-C end and cares about shielding and connector plating rather than the cheapest possible option. The 4.9ft length is the practical number here — long enough to move your head, set the phone down and reach a laptop on the far side of a desk, while still folding up small for a bag. The item weight is listed at just 5 g, and the cable is described as tangle-free.
Who should skip it? Anyone who needs to connect more than one listener. There is one output here, full stop. And if you do not own compatible Marshall headphones, the 3.5mm-to-USB-C format still works for plenty of devices, but you are paying for a fit and finish designed around a specific headphone family — check that your gear matches the listed compatibility before assuming it will.
Side-by-Side: Which Should You Choose?
• Best for sharing audio with 2–3 people → Poyiccot USB C. Three 3.5mm female jacks, one USB-C source, simultaneous playback.
• Best for Marshall Major or Monitor owners → Gneinour Major IV Cable. It is built as a replacement for exactly those headphones.
• Best for a pocket-sized travel accessory → Poyiccot USB C. Smaller footprint, lighter build, aluminum shell that resists scratches.
• Best for signal shielding and connector quality → Gneinour Major IV Cable. Multi-layer shielding, oxygen-free copper, silver-plated and 24K gold-plated connectors.
• Best for long-term durability claims → Gneinour Major IV Cable. Reinforced connectors rated through 30,000+ bend tests, with abrasion- and corrosion-resistant jacketing.
• Best for no-fuss setup → Poyiccot USB C. Plug in three headphones and go; no compatibility list to check beyond a USB-C audio port.
• Best for commuting and outdoor use → Gneinour Major IV Cable. 1.5m of flexible PVC that folds and stores easily.
• Skip both if you need charging → neither cable carries power. Poyiccot states plainly it is not for charging, and Gneinour's cable is an audio-only aux design.
If I owned Marshall Major or Monitor headphones, I would buy the Gneinour Major IV Cable. In my opinion the shielding, the plated connectors, the oxygen-free copper cores and the 30,000-bend durability claim make it the more serious piece of hardware, and the 4.9ft length is simply more usable day to day than a 1ft stub. I would only reach for the Poyiccot USB C if my actual goal were group listening — three people, one phone, one song. That is a genuinely useful trick, and almost nothing else does it. But it is a single-purpose tool, and the Gneinour cable is the one I would keep in my bag.
No. Poyiccot is a 1-to-3 splitter with one USB-C plug and three 3.5mm female jacks for shared listening. Gneinour is a single 3.5mm-to-USB-C cable, 4.9ft long, designed as a replacement for Marshall Major and Monitor headphone cables.
Will the Poyiccot USB C cable charge my phone?
The 3.5mm-to-USB-C format itself is widely compatible, and the listed device support covers iPhone 15/16/17 series, iPad, MacBook, Galaxy, OnePlus and Pixel. The cable is designed around Marshall Major V/IV/III/II/I and Monitor II/I, so check your headphone's input before buying.
That depends on the job, not the spec sheet. If you need to share audio across three headphones, Poyiccot is the only one of the two that can do it. If you need a long, shielded replacement cable, Gneinour is the one built for that. Check the current price on Amazon for each and decide based on which problem you actually have.
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