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We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
If you want to keep using your wired headphones on a modern iPhone — with full volume, track and call controls intact — choose JSAUX Headphone Adapter; if you need two people to listen to the same song, movie or game from one 3.5mm jack, choose SAMZHE Headphone Splitter 3.5mm.
These two accessories look similar in a product photo — both are short black-and-metal dongles with 3.5mm sockets — but they solve completely different problems. One converts a Lightning port into a headphone jack. The other takes an existing headphone jack and doubles it. If you buy the wrong one, it simply won't do the job you had in mind, so it's worth spending two minutes on the difference before you order.
• JSAUX Headphone Adapter — biggest strength: Apple MFi certification plus support for inline volume, track skipping, calls and Siri, so your wired headset behaves exactly as it would in a native headphone jack.
• JSAUX Headphone Adapter — biggest trade-off: It only works with Lightning-equipped Apple devices, and it's a one-port adapter by design — it splits nothing and shares nothing.
• SAMZHE Headphone Splitter 3.5mm — biggest strength: Turns one 3.5mm output into two, with 24K gold-plated connectors, oxygen-free copper wiring and triple shielding to keep the signal clean for both listeners.
• SAMZHE Headphone Splitter 3.5mm — biggest trade-off: Audio output only. No microphone pass-through, no inline volume control on your headset, and it does nothing for a phone that has no 3.5mm jack to begin with.
• Who each pick is for: JSAUX for iPhone owners who refuse to give up their wired headphones; SAMZHE for anyone with a working headphone jack who wants to share audio with a second person.
The JSAUX adapter exists for one reason: Apple removed the headphone jack, and a lot of people still own good wired headphones. This dongle plugs into the Lightning port and gives you a single 3.5mm female socket. The important part isn't the plug itself — it's what survives the conversion. According to the spec sheet, you keep volume control, previous/next track skipping, pause, call answering and Siri, all through your existing headset's inline remote. That's the difference between an adapter that feels like a workaround and one that feels like the jack never left.
The MFi certification is the other headline. JSAUX states the adapter has completed Apple's MFi certification requirements, and that matters in daily use because uncertified Lightning audio accessories are the ones that tend to throw up "this accessory is not supported" messages. Compatibility covers the iPhone 7 and 7 Plus right through the 14 series, plus SE, X, XR, XS and XS Max, along with iPod touch 6th generation and Lightning-based iPad Mini, iPad Air and iPad Pro models. The one hard limit: it does not work with the 2018 iPad Pro 11-inch or 12.9-inch, or the 2021 iPad Mini, because those moved to USB-C. iPhone 7 and 7 Plus owners also need iOS 10.3.1 or later.
Build quality is pitched at long-term pocket abuse. JSAUX describes a special strain-relief design rated to survive 15,000+ bends in laboratory testing, an aluminum housing, and a nylon-braided cable that resists tangling. The audio spec is a sampling rate up to 48kHz with noise filtering — a reasonable, honest figure for a dongle like this, and enough for everyday streaming and calls.
Buy it if you have a Lightning iPhone or Lightning iPad and a wired headset you actually like. Skip it if your device is USB-C, or if you were hoping to plug two pairs of headphones in — this adapter has exactly one port.
The SAMZHE splitter solves the opposite problem. You already have a 3.5mm output — on a laptop, a Switch, a PS5 controller, a car stereo, an older iPhone — and you want two people to hear it. This is a 1-male-to-2-female Y cable: the male end goes into your device, and the two female sockets each take a pair of headphones or feed a pair of speakers. SAMZHE even frames the second use case as a DIY mini surround setup, which is a fair way to think about it if you have two powered speakers sitting around.
The construction is where SAMZHE puts its emphasis. Polished 24K gold-plated connectors, oxygen-free copper inner conductors and triple shielding are the stated recipe for blocking static and signal loss, so both listeners get the same full stereo signal rather than one clean channel and one noisy one. The housing is scratch-resistant aluminum alloy, the cable is flexible TPE, and there are strain-relief rings at the joints to survive repeated twisting and pulling. One genuinely useful detail: the connector is slim enough to fit most phone cases without taking the case off — a small thing that ordinary chunky splitters get wrong constantly.
Two limitations are stated plainly and you should take them seriously. The two female ports are audio output only — no microphone input, and no inline volume control from your headset. So if you were planning to plug in a gaming headset with a boom mic and talk to your squad, this is not that cable. It's also purely plug-and-play, with no drivers, and it works across anything with a standard 3.5mm TRS port: iPhone, Samsung, iPad, MacBook, laptop, Switch, PS4, PS5, Xbox 360, car stereo, TV, MP3 players, soundbars and more. The cable is 25cm / 9.8 inches and weighs about 10g, so it lives happily in a pocket or a bag pocket. SAMZHE backs it with a 2-year manufacturer warranty.
Buy it if you want to share audio with a friend, partner or kid from a single jack. Skip it if you need mic support, inline volume control, or if your source device has no 3.5mm output at all.
• Best for reviving wired headphones on an iPhone → JSAUX Headphone Adapter. It's the only one of the two that converts Lightning to 3.5mm.
• Best for sharing audio between two people → SAMZHE Headphone Splitter 3.5mm. Two female outputs, one source, no setup.
• Best for keeping inline controls (volume, skip, calls, Siri) → JSAUX Headphone Adapter. The SAMZHE splitter explicitly does not pass those through.
• Best for gaming headsets with a mic → JSAUX Headphone Adapter. SAMZHE's splitter is output-only, so a boom mic won't work through it.
• Best for laptops, desktops, consoles and car stereos → SAMZHE Headphone Splitter 3.5mm. Anything with a standard 3.5mm TRS jack is fair game.
• Best for case-on convenience → SAMZHE Headphone Splitter 3.5mm. Its slim plug is designed to fit through most phone cases without removal.
• Best for durability claims you can point to → both, in different ways. JSAUX cites a 15,000+ bend rating with aluminum housing and nylon braiding; SAMZHE cites aluminum alloy housing, TPE cable and strain-relief rings, plus a 2-year warranty.
• Best if your device is USB-C → neither. JSAUX is Lightning-only (it won't work with USB-C iPads), and SAMZHE needs an existing 3.5mm port.
In my opinion these two aren't really competitors — they're answers to two different questions, and the right buy depends entirely on which question you're asking. If you own a Lightning iPhone and wired headphones you're not ready to abandon, I'd buy the JSAUX Headphone Adapter: MFi certification, preserved inline controls and a genuinely rugged build make it the lower-risk pick for that job. If your device already has a headphone jack and you want to double it for a second listener, I'd buy the SAMZHE Headphone Splitter 3.5mm — gold-plated connectors, triple shielding and a case-friendly slim plug are exactly what a splitter should offer. Buy the JSAUX to replace a missing jack. Buy the SAMZHE to multiply a jack you already have.
No. JSAUX converts a Lightning port into a single 3.5mm jack. SAMZHE takes an existing 3.5mm jack and turns it into two. One replaces a missing port; the other duplicates a port you already have.
No. SAMZHE states the two female ports transmit audio output only and that the splitter does not support microphone input or inline headphone volume control. For calls with a wired headset, the JSAUX adapter is the relevant product.
It works with Lightning iPads (iPad Mini, iPad Air, iPad Pro with Lightning) and iPhone 7 through the 14 series. It does not work with the 2018 iPad Pro 11-inch/12.9-inch or the 2021 iPad Mini, which use USB-C.
They're not interchangeable, so "value" depends on your port. If you're missing a headphone jack, the JSAUX adapter is the only one that solves your problem. If you have a jack and need two listeners, the SAMZHE splitter is the one that does the job — and it carries a 2-year manufacturer warranty. Check the current price on Amazon for each before deciding.
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