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We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
If you want one box that carries and powers a Nintendo Switch setup with a foldable headset ready to go, choose 4Gamers Hard Shell Travel; if you need a small desktop box that switches audio between two sources or two outputs without unplugging cables, choose Zeroffi 3.5mm.
• 4Gamers Hard Shell Travel — biggest strength: It's a complete travel kit for Switch, Switch Lite and OLED, bundling a hard-shell case, a foldable C6-50 headset, a braided USB-C cable and a foam adapter for the Lite.
• 4Gamers Hard Shell Travel — biggest trade-off: It's built around one console and one headset, so it solves portability and protection rather than giving you any kind of audio routing flexibility.
• Zeroffi 3.5mm — biggest strength: A passive 2-in-1-out / 1-in-2-out switcher with an A/B selector, one-touch mute and a volume knob, so you can move between audio devices without replugging cables.
• Zeroffi 3.5mm — biggest trade-off: It's a switcher box, not a listening device — no case, no cable, no headset, and it only works with 3-segment (not four-segment) earphones.
• Who 4Gamers Hard Shell Travel is for: Switch owners who carry their console around and want the headset, cable and protection sorted in one purchase.
• Who Zeroffi 3.5mm is for: Desk users juggling two audio sources or two outputs — speakers and headphones, a PC and a console — who are tired of swapping plugs.
The 4Gamers Hard Shell Travel kit is best understood as a bundle, not a single accessory. You get the hard-shell case itself, which is the part that gives the product its name — a tough outer shell built for tossing a Switch, Switch Lite or OLED into a bag without worrying about what else is in there. Around that, 4Gamers adds the pieces you'd otherwise buy separately: the C6-50 gaming headset, a braided USB-C charging cable, and a foam adapter so the whole thing fits the smaller Switch Lite as well.
In my opinion, this is the pick for someone who owns a Switch and wants one tidy bundle: case, headset, charging cable and Lite adapter in a single box, backed by a one-year manufacturer warranty. You should skip it if you already have a headset you love, or if what you actually need is a way to route audio between several devices — this kit doesn't do that. It's also worth noting the kit is specifically shaped around Nintendo's handheld family, so it isn't a general-purpose case for other hardware.
Zeroffi 3.5mm: Who It's For
The Zeroffi 3.5mm is a different species of product entirely. It's a passive audio selector — a small black box measuring roughly 2.6 x 2.5 x 1.1 inches — that sits on your desk and lets you choose which signal goes where. It works in two directions: 2-in-1-out, where two audio sources feed one output (say, a PC and a console into one set of speakers), or 1-in-2-out, where one source feeds two outputs (your PC into either speakers or headphones). You pick with the 1/2 selector, pressing down for input/output 1 and up for 2.
The practical appeal is wear and tear. Every time you yank a 3.5mm plug out of a socket to move between devices, you're putting stress on the jack. A switcher turns that into a button press. There's a one-touch mute as well, which is genuinely useful in meetings or during a game when you need silence instantly, and an adjustable volume knob that controls speaker and headphone output. One thing to be clear about from the spec sheet: that knob only controls output volume for speakers and headphones — it does not control microphone volume.
This is the pick for someone with two audio sources and a habit of swapping cables, or someone who wants to A/B compare two devices through the same speakers. Skip it if you're looking for a headset or a case — it is neither. And pay attention to the compatibility note: it's designed for 3-segment earphones and does not support four-segment headphones, which rules out a lot of modern headsets with inline mics. It carries a 365-day warranty.
• Best for travelling with a Switch → 4Gamers Hard Shell Travel. The hard-shell case and foam Lite adapter exist for exactly that.
• Best for switching headphones between devices → Zeroffi 3.5mm. The whole product is a 1/2 selector that routes audio without replugging.
• Best for a headset included in the box → 4Gamers Hard Shell Travel. The foldable C6-50 with adjustable headband, in-line mic, mute and inline volume.
• Best for a desk with speakers and headphones → Zeroffi 3.5mm. Set it to 1-in-2-out and choose your output with one press.
• Best for instant silence in a meeting or game → Zeroffi 3.5mm. Its one-key mute does that job; the 4Gamers kit mutes the mic, not the whole output.
• Best for protecting your console → 4Gamers Hard Shell Travel. A tough hard shell is the core of the kit.
• Best for comparing two sources through one speaker set → Zeroffi 3.5mm. That's the A/B comparison use case the selector is built around.
• Best for a wired headset with a mic built into the cable → 4Gamers Hard Shell Travel. The Zeroffi box doesn't support four-segment headphones, so an inline-mic headset isn't its target.
If I had to pick one, I'd buy the 4Gamers Hard Shell Travel kit for a Switch owner and the Zeroffi 3.5mm for a desk user — they genuinely don't compete for the same job. Forced to choose a single product for the "switch headphones" angle, I'd take the Zeroffi 3.5mm, because routing audio between two devices is a daily annoyance it removes permanently and cheaply. But if your Switch travels with you, the 4Gamers bundle covers more ground in one purchase.
With the Zeroffi 3.5mm you connect two audio sources to inputs 1 and 2 and press the selector up or down to choose which one feeds your headphones — no unplugging required. With the 4Gamers kit, the headset plugs straight into the Switch, so switching devices means moving the 3.5mm plug. The Zeroffi box is the more convenient option for frequent swaps.
Neither of these products changes the left/right channel assignment of your headphones — that's handled by your device's audio settings or the source app. The 4Gamers headset and the Zeroffi switcher both pass audio through as-is. If channels are reversed, the fix is in software, not in either accessory.
The Zeroffi 3.5mm handles this directly: run your computer into the input and connect speakers and headphones to the two outputs, then select which one you want with the 1/2 button. It's a passive box, so it doesn't need power, and the volume knob adjusts speaker and headphone output. Note that it controls output volume only — not microphone volume.
In Windows 11, open Settings, go to System, then Sound, and pick your output device under the Output section — that's where you choose between headphones, speakers or a headset. The Zeroffi switcher can sit in front of that choice so you physically toggle between two outputs, while the 4Gamers headset's in-line mute and volume work independently of Windows. Neither product changes Windows 11's own device list.
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See also: Mchoi Hard Travel Storage vs Lenovo H110: Game Headset, MKJ Corded 2.5mm vs Vonztek Headset: Call Center Headphones, Lavifree Headphones vs AFGHOA 3.5mm