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We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
If you want the higher-resolution DAC and in-line control for calls and volume, choose Ugreen 2; if you need a simpler plug-and-play dongle with a bending-tested cable for everyday carry, choose Untvie USB-C.
• Ugreen 2 — biggest strength: a 24bit/96kHz DAC, which is a higher sampling and bit-depth spec than the 16bit/48kHz adapters it's positioned against, plus support for in-line volume control and calls.
• Ugreen 2 — biggest trade-off: it's the more feature-loaded of the two, with a metallic grey aluminum-and-nylon build that's slightly heavier-duty than a bare-bones dongle, so it's less of a "throwaway" accessory.
• Untvie USB-C — biggest strength: durability testing baked into the design — the TPE cable and aluminum shell are rated to survive 25,000+ bending cycles, and it's built for true plug-and-play with no apps or drivers.
• Untvie USB-C — biggest trade-off: its DAC tops out at 48,000 samples per second, so it doesn't reach the 24bit/96kHz ceiling the Ugreen advertises.
• Who each pick is for: Ugreen 2 suits listeners who want the best audio spec and want to take calls through wired headphones; Untvie USB-C suits anyone who wants a cheap, tough, no-fuss adapter to keep in a bag.
The Ugreen 2 is the more ambitious of the two adapters. Its headline claim is a 24bit/96kHz DAC — the data sheet explicitly contrasts this with 16bit/48kHz adapters, which is the more common spec at this end of the market. In plain terms, that's a higher-resolution conversion path, and Ugreen pairs it with noise reduction and a multi-shielding design. If you're plugging decent wired headphones or a car stereo into a phone that dropped its headphone jack, that extra headroom is the reason to pick this one over a basic dongle.
The second thing that sets it apart is in-line control. Ugreen says the adapter supports all 3.5mm earphones and works with in-line volume control and calling. That matters more than it sounds — plenty of cheap USB-C adapters pass audio one way and nothing else, so your inline mic and volume buttons go dead. Here they don't. If you take calls on wired earbuds or want to nudge the volume without unlocking your phone, this is the practical advantage.
Build-wise, it's a nylon-braided cable with an aluminum alloy case in a metallic grey finish, and Ugreen pitches the aluminum as scratch- and rust-resistant. It's slim and pocketable, and it ships as a two-pack, so you can leave one in a car and one in a bag. The compatibility list is genuinely broad: iPhone 17 through 15 series, Galaxy S26 down to S20, Pixel 10 down to 6, iPad, MacBook, Mac mini, PS5 and Switch 2.
Who should buy it: anyone who cares about the audio spec, wants inline volume and call support, and doesn't mind a slightly more premium-feeling accessory. Who should skip it: if you just need the cheapest possible way to get a 3.5mm jack back and never touch the inline buttons, the extra spec is money you may not feel.
Untvie takes the opposite approach: keep it simple, make it tough, make it work the moment you plug it in. The DAC runs at 48,000 samples per second, and Untvie describes the tuning as rich bass, clear highs and balanced mids. That's a standard-resolution adapter rather than a high-resolution one — it won't match the Ugreen's 24bit/96kHz ceiling, but for podcasts, calls, streaming music and gaming audio it's the kind of spec that gets the job done without drama.
Where Untvie leans hardest is durability and ease of use. The cable is ultra-flexible TPE with an aluminum alloy shell, and it's certified to pass 25,000+ bending tests with an anti-tangle, anti-bend, anti-abrasion design. That's a meaningful claim for something that lives in a pocket or at the bottom of a bag. It's also explicitly plug-and-play — no apps, no drivers, zero-latency audio the second you connect.
The compatibility list covers the essentials: iPhone 17 down to 15 series, Pixel 7 down to 6a, Galaxy S23 down to S20 plus the A53/A54 and the Fold/Flip lines, MacBook Pro and MacBook Air (2020/M1/M2), iPad Pro, iPad Air and iPad mini. It's glossy-finished and compact, and it comes as a two-pack like the Ugreen.
Who should buy it: travelers, commuters and anyone who wants a spare adapter that survives being crammed into a bag, plus people who'd rather not think about drivers or settings. Who should skip it: if you specifically want the higher 24bit/96kHz conversion or you rely on inline volume and mic controls on your wired headset, the Ugreen is the better fit.
Side-by-Side: Which Should You Choose?
• Best for taking calls on wired headphones → Ugreen 2. It explicitly supports in-line control, including volume and calling.
• Best for no-fuss setup → Untvie USB-C. Plug-and-play with no apps or drivers, described as zero-latency.
• Best for long-term abuse in a bag → Untvie USB-C. The 25,000+ bending-test rating and anti-tangle TPE cable are the durability headline.
• Best for car and speaker use → Ugreen 2. Ugreen calls out car radios, speakers and Hi-Fi systems, and the higher DAC spec suits a decent car stereo.
• Best for gaming and TV-adjacent gear → Ugreen 2. Its compatibility list includes PS5 and Switch 2.
• Best for a spare-in-every-bag strategy → either. Both ship as two-packs, so you can split them between home, car and work.
• Best for the widest current phone coverage → Ugreen 2. Its list reaches Pixel 10 and Galaxy S26 families; Untvie's stops around Pixel 7 and Galaxy S23 series.
I'd buy the Ugreen 2. The 24bit/96kHz DAC and the in-line control support are the two features that actually change how the adapter feels day to day — you get better conversion and your headset buttons still work. In my opinion, that combination is worth more than the Untvie's bending-test bragging rights, because a dongle that sounds better and takes calls is the one you'll reach for. If your priority is a tough, forget-about-it spare you can lose in a bag without regret, the Untvie USB-C is a perfectly sensible pick. Before you decide, check the current price on Amazon — the gap between these two may settle it for you.
FAQ
On paper, yes. Ugreen specifies a 24bit/96kHz DAC while Untvie specifies 48,000 samples per second. Higher resolution doesn't guarantee you'll hear a difference on cheap earbuds, but it's the stronger spec and the better starting point for decent headphones.
Untvie's data sheet doesn't mention in-line control — it emphasizes plug-and-play and DAC performance instead. Ugreen explicitly lists volume control and calling support, so if inline buttons matter to you, that's the safer choice.
Untvie makes the more concrete durability claim: a TPE cable and aluminum shell certified to pass 25,000+ bending tests. Ugreen counters with a nylon-braided cord and scratch- and rust-resistant aluminum. Both are built to survive daily carry; Untvie just quantifies it.
Both cover iPhone 15 through 17 series and older Galaxy and Pixel models. The Ugreen list is broader and newer, reaching Pixel 10 and Galaxy S26 families, so if you're on the latest hardware, verify your model against its compatibility list first.
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