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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 switch one source between two headphones — or two sources into one pair — without unplugging anything, choose Sonshine Electronics Two channel Audio; if you need a switcher with a volume knob and a one-touch mute for movie nights and calls, choose Zeroffi 3.5mm. Both are tiny passive 3.5mm boxes, both do A/B switching, and neither needs power. The real split comes down to headset support and volume control, and that matters a lot when you're switching headphones around a movie setup.
• Sonshine Electronics Two channel Audio — biggest strength: it accepts any 3.5mm plug, whether it has two, three or four contacts, so headphones and headsets with a mic work. It also isolates the ground channel, which is a genuine plus if you're chasing hum from ground loops.
• Sonshine Electronics Two channel Audio — biggest trade-off: no volume control and no mute button. There's a middle switch position that mutes everything, but that's the extent of it.
• Zeroffi 3.5mm — biggest strength: an adjustable volume knob plus a one-key mute, which is exactly what you want mid-film when you don't want to reach for the source.
• Zeroffi 3.5mm — biggest trade-off: it's built for 3-segment earphones only and doesn't support four-segment headphones, so anything with an inline mic may not play nicely.
• Who each pick is for: the Sonshine suits desktop, gaming and work-from-home setups where you flip between a headset and speakers. The Zeroffi suits listeners who want quick level control while switching headphones between two sources.
This is a plain, honest switch box. It's an ABS enclosure with a metal switch inside and brass contacts on the jacks — the kind of construction that suggests the manufacturer thought about corrosion over time rather than just shipping the cheapest thing possible. At 50 x 35 x 24 mm and 24 grams, it disappears on a desk or behind a monitor. No batteries, no power brick, no drivers.
What it does best is flexibility in both directions. You can run one input into two outputs, or flip it around and choose which of two inputs reaches your output. That covers a lot of real setups: a PC and a console feeding one pair of headphones, or one PC feeding both a headset and a set of desktop speakers. Because it switches and isolates the ground channel, it's also a reasonable pick if you've been fighting a low hum in your system. And critically, it works with two-, three- and four-contact plugs, so a headset with a mic is fair game.
Who should buy it: anyone managing a desktop, gaming station, streaming rig or work-from-home audio chain who wants to stop yanking cables in and out of a jack. If your gear spans both TRS and TRRS, this is the safer buy. Who should skip it: if you want to nudge volume without touching the source device, or you specifically need a mute button for a mic during calls, this box won't do it. The middle position mutes everything at once, which is all-or-nothing. You'll also need to buy your own 3.5mm cables at the right lengths.
The Zeroffi does the same core job — 2-in-1-out or 1-in-2-out — but it adds controls the Sonshine doesn't have. There's a volume knob, an A/B selector, and a one-key mute. The mute is the interesting part: in the manufacturer's framing it lets you mute your mic while still hearing everyone else during games or meetings. That's a genuinely useful trick for anyone on calls or in lobbies, and it's the feature that separates this box from a bare switch.
It's also small — 2.6 x 2.5 x 1.1 inches — so it slots onto a desk without drama. The selector works in both directions, so you can consolidate two inputs into one output or split one input across two outputs, same as the Sonshine. The mute button is described as press-down for input/output 1 and press-up for 2, which makes it a tactile, no-look operation once you've learned it.
Who should buy it: people who want a volume knob within reach and a fast mute, particularly for movies, games and calls. If you're switching headphones between two sources and want to trim the level on the fly, this is the more convenient box. Who should skip it: anyone using a four-segment headset. Zeroffi states plainly that this selector is designed for 3-segment earphones and does not support four-segment headphones. And note that the volume control only governs speaker and headphone output — it won't control microphone volume.
Side-by-Side: Which Should You Choose?
• Best for quick volume changes → Zeroffi 3.5mm. The adjustable volume knob is the feature the Sonshine simply doesn't offer.
• Best for muting fast → Zeroffi 3.5mm. One-key mute beats flipping to a middle position that kills the whole signal.
• Best for ground-loop noise → Sonshine Electronics Two channel Audio. It switches and isolates the ground channel, which is aimed squarely at hum problems.
• Best for plain 3-segment earbuds and headphones → either. Both handle standard stereo plugs without fuss.
• Best if you use an inline-mic headset → Sonshine Electronics Two channel Audio. Zeroffi explicitly excludes four-segment headphones.
• Best for a compact desk footprint → Zeroffi 3.5mm. It's the smaller of the two boxes.
• Best warranty terms → Zeroffi 3.5mm. It lists 365 days, while Sonshine directs you to contact the manufacturer.
If I were buying for a mixed desk setup where a headset with a mic shares space with speakers, I'd take the Sonshine Electronics Two channel Audio — the four-contact compatibility and ground isolation are the two things I'd actually miss on the other box. But if my use case were movie watching with a set of plain stereo headphones and two sources to flip between, I'd take the Zeroffi 3.5mm without hesitation, because having a volume knob and a mute button within arm's reach during a film is worth more than the extra plug compatibility I wouldn't be using. Buy for the plugs you own, not the spec sheet bragging rights.
how to switch headphones left right
Neither of these boxes flips stereo channels — they're A/B selectors for routing audio between sources and outputs, not channel-balance tools. To swap left and right, you'd need a source or app with a channel-balance setting. The Sonshine and Zeroffi both pass stereo through unchanged.
how to switch headphones between devices
Connect each device to one of the two jacks and use the selector to choose which one reaches your headphones. The Sonshine lets you pick which of two inputs passes to the output, and the Zeroffi does the same with its 1/2 selector. No unplugging required either way.
how to switch headphones to headset windows 11
Plug your headset into the output jack and pick the correct input with the selector. On Windows 11 you'll also want to set the right playback and recording device in sound settings. If your headset uses a four-contact plug, the Sonshine is the one that supports it; the Zeroffi does not.
how to switch headphones to speakers on computer
Run your PC into the input, connect headphones to one output and speakers to the other, then toggle between them. Both boxes do this in 1-in-2-out mode. The Zeroffi adds a volume knob and mute, while the Sonshine mutes everything via its middle position.
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