We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Updated: 2026-09-28 · 7 min read · Independent comparison
If you want one small adapter that lets two people share the same audio while your phone keeps fast charging at up to 60W, choose INVERSE NET 3; if you need a compact 3-in-1 dongle with a copper-core DAC for clean, noise-free playback and the widest current-device compatibility, choose DICKMITH USB C.
• INVERSE NET 3 — biggest strength: two separate 3.5mm jacks plus PD 60W charging, so two listeners can share audio while the host phone tops up fast.
• INVERSE NET 3 — biggest trade-off: the ABS build is sturdy but not premium, and the compatibility list leans on slightly older and newer generations, so you must confirm your exact model.
• DICKMITH USB C — biggest strength: a 99% copper core and a built-in Realtek/DAC chip rated for 24-bit/96kHz playback, which points to clean, low-noise audio.
• DICKMITH USB C — biggest trade-off: it splits into two jacks but is pitched more as a personal listening-plus-charging solution than a dedicated two-person sharing tool.
• Who each pick is for: INVERSE NET 3 for families, road trips and shared listening on a fast charge; DICKMITH USB C for one listener who prioritizes audio quality on a modern USB-C phone.
The INVERSE NET 3 is, at heart, a sharing tool. It gives you a USB-C to 3.5mm adapter with two separate headphone jacks, so two people can plug in at once and hear the same thing at the same quality. That's the feature that stands out. If you've ever passed a single pair of earbuds back and forth on a plane, you already know why a splitter matters.
The charging side is just as deliberate. It carries a Type-C fast charging port rated for PD up to 60W with a maximum output of 20V/3A. In plain terms, the adapter is built to pass a serious amount of power through to your phone while audio is running, so a long session doesn't have to end when the battery dips. Plug and play, no drivers.
Audio is handled by a built-in DAC chip rated for 24-bit/96kHz output with noise reduction. The claim on the sheet is that this beats the more common 16-bit/48kHz spec, which is the kind of detail that matters if you notice hiss or a flat, lifeless signal. Volume control and calls work through the adapter too.
Who should buy it: anyone who shares audio regularly and wants charging to keep pace. Two kids in the back seat, a couple on a flight, a passenger navigating while the driver's phone charges. Who should skip it: if you only ever listen alone and want the most premium-feeling cable, the ABS construction and the two-jack design are more than you need.
DICKMITH USB C: Who It's For
The DICKMITH USB C takes a different angle. It's also a 3-in-1 adapter with dual 3.5mm jacks and a USB-C fast charging port rated at PD 60W / 20V/3A, so the headline numbers line up closely with the INVERSE NET 3. Where it separates itself is in how it describes the audio path.
The sheet calls out a 99% copper core and a built-in smart chip — a Realtek chip/DAC — supporting 24-bit/96kHz output. Copper conductors and a dedicated chip are the pieces that typically translate into a stable signal, low power-supply noise, and audio that doesn't fatigue your ears over a long session. That's the pitch, and it's the part I'd weigh most if clean playback is your priority.
It's also explicitly a plug-and-play dongle: no drivers, no apps. The description emphasizes a slim, portable design for connecting headphones and charging a Type-C phone quickly, and a signal isolation design meant to keep the connection stable rather than dropping out mid-song. There's a stated support for in-line volume control, which is a small thing that becomes a big annoyance when it's missing.
Compatibility is listed as iPhone 16/16 Pro/15/15 Pro Max, iPad Pro 12.9-inch 5th/4th/3rd and 11-inch 3rd/2nd/1st gen, iPad Air 5th/4th, iPad Mini 6th, Galaxy S22/S21 Ultra/S21+/S21/S20 Ultra, Note, Pixel and Huawei P20/P30/Mate 20/20 Pro. The sheet repeats the same warning you should take seriously: only compatible with models that have a USB-C connector — check before you buy.
Who should buy it: a single listener on a modern USB-C device who cares about audio cleanliness and wants charging handled at the same time. Who should skip it: if your main goal is a dedicated two-person sharing setup, or your device is older than the USB-C era, this isn't the fit.
Side-by-Side: Which Should You Choose?
• Best for sharing audio with two listeners → INVERSE NET 3. Two separate 3.5mm jacks and equal-quality output on both are the whole point of the design.
• Best for fast charging while you listen → effectively a tie. Both are rated for PD 60W at a maximum 20V/3A, so neither wins on raw charging power.
• Best for the newest iPhone and Galaxy generations → INVERSE NET 3. Its list runs up to iPhone 17 and Galaxy S26/S25/S24, which is the more forward-looking compatibility set.
• Best for iPad and MacBook coverage → INVERSE NET 3. Its sheet explicitly names iPad mini/Pro/Air, MacBook Pro/Air and Dell XPS models.
• Best for a slim, travel-friendly audio dongle → DICKMITH USB C. The sheet leans hard on compact, portable, plug-and-play design.
• Best if you're unsure your phone is USB-C → neither, until you check. DICKMITH's sheet is blunt about USB-C-only compatibility, and INVERSE NET 3 lives in the same ecosystem.
• Best value → decide by your use case, not the number. If you share audio, INVERSE NET 3 does more for you; if you don't, DICKMITH USB C's audio-first internals make more sense. Check the current price on Amazon before you commit.
In my opinion, INVERSE NET 3 is the better buy for most people, because the dual-jack sharing plus PD 60W charging solves two real problems at once, and its compatibility list reaches further into the newest iPhone and Galaxy lineups. I'd pick DICKMITH USB C instead if I listened alone, cared most about a clean copper-core signal, and wanted the slimmest possible dongle. If your priority is fast charge headphones that keep you listening and topped up, INVERSE NET 3 edges it. If your priority is the quietest possible audio path, go DICKMITH.
how to charge headphones faster
Charging speed depends on the headphone and the power source, not the adapter alone. Both adapters here support PD fast charging up to 60W at a maximum 20V/3A, so pairing them with a capable PD charger and cable gives the best chance of a quick top-up.
how to charge headphones
Plug the adapter into your phone's USB-C port, then run your charging cable into the adapter's Type-C fast charging port. Audio and charging then pass through the same dongle, so you can listen while the phone charges.
is fast charging bad for headphones
There's nothing in either data sheet suggesting the adapter harms headphones. The fast charging here is aimed at your phone's battery via the PD port; the 3.5mm side is an audio path, and both products describe stable, noise-controlled output.
how to fast charge bose headphones
Bose headphones charge through their own cable and power source, not through this adapter's charging port. What these adapters do is let you charge your phone over PD 60W while your headphones play through the 3.5mm jack.
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