We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Updated: 2026-09-17 · 6 min read · Independent comparison
If you want the simplest, most universal adapter for plugging your own headphones into an airplane seat jack, choose HIEbee Dual 3.5mm; if you need an adapter built specifically around Bose QuietComfort and 700-series headphones with a folding plug that handles both single and double jacks, choose Asobilor QC45.
• HIEbee Dual 3.5mm — biggest strength: a straightforward dual/single 3.5 mm adapter with gold-plated connectors, sold as a 2-pack, and rated for 2000 plug-and-unplug cycles.
• HIEbee Dual 3.5mm — biggest trade-off: it does not fold, and it isn't marketed around any specific headphone brand, so brand-specific fit isn't part of the pitch.
• Asobilor QC45 — biggest strength: a folding plug design that converts between single and double plugs, plus explicit compatibility with a long list of Bose models.
• Asobilor QC45 — biggest trade-off: its headline compatibility list is Bose-centric, so if you don't own one of those headphones, you're paying for a feature set aimed at someone else.
• Who each pick is for: HIEbee for the traveler who just wants a no-fuss adapter for whatever headphones they already own; Asobilor for the Bose owner who wants the folding plug to cover any airline jack they meet.
The HIEbee Dual 3.5mm is the "keep it in your carry-on and forget about it" adapter. It's a male-to-female 3.5 mm adapter — you plug the male end into the seat's audio jack and your own headphones into the female end. The design is dual-output friendly, meaning it works with the standard dual-jack setups you find on aircraft armrests, and it's also compatible with most devices that use a standard single or dual 3.5 mm headphone output.
What it does best is stay simple. The connectors are gold-plated, which the spec sheet frames as a way to reduce interference and preserve audio quality while extending the life of the connector itself. There's no battery, no plug type, nothing to charge — it's a passive piece of metal and plating that just sits between the plane's system and your headphones. If you already travel with a good pair of wired headphones, that's the whole point: you keep the comfort and sound you're used to instead of accepting whatever disposable headset the airline hands out.
The durability claim worth noting is the 2000 plug-and-unplug rating. That's a design/test figure rather than a promise about your specific trips, but it tells you the connector is built to survive being jammed into seat jacks over and over — which is exactly the kind of repeated, slightly careless use an airplane adapter gets. The 2-pack is also genuinely useful here, because these things are small and easy to lose in a seat pocket. Two means one stays in your bag and one lives in your jacket.
Who should skip it? Anyone who wants a folding plug. HIEbee doesn't fold, so if you're specifically chasing the flexibility of switching a single plug into a double on the fly, that's not what this is. It's also not marketed around any particular headphone brand, so if you want something explicitly matched to your Bose model by name, the Asobilor is the more targeted pick.
The Asobilor QC45 is the adapter aimed squarely at Bose owners. Its compatibility list is long and specific: QuietComfort 2, QC3, QC15, QC20, QC25, QC35, QC35ii, NC700, Bose 700, SoundLink, SoundLinkII, AE2, AE2i, and AE2W. If you fly with one of those, the naming alone tells you the manufacturer had your headphones in mind. Asobilor also states compatibility with most devices using a standard single or dual 3.5 mm output, and says the adapter suits most airline audio jacks.
The standout feature is the folding plug. This is the detail that separates it from a plain adapter: the design folds to work as either a single or a double plug, so you don't have to guess what kind of jack your seat has or carry a second adapter for the other configuration. If you've ever settled into a seat, reached for the armrest jack, and realized your adapter only fits one layout, you understand why that matters. It's a small thing that removes a real, recurring annoyance.
The connector is gold-plated, and Asobilor frames the plating the same way most makers do — better signal input, less external noise, longer service life. It's a compact piece, roughly an inch square and a third of an inch thick, and light enough that you won't notice it in a pocket. There's a limited one-year warranty, and the brand points buyers to email support for help or replacement.
Who should skip it? If you don't own a Bose headphone from that list, the brand-specific framing is less relevant to you, and a more generic adapter like the HIEbee may be the simpler call. But the folding plug is a real functional advantage regardless of which headphones you use, so it's not a Bose-only benefit — it's just that Bose owners get the clearest fit signal.
• Best for a folding, single-or-double plug → Asobilor QC45. The foldable design adapts to either jack layout without a second adapter.
• Best for brand-matched Bose compatibility → Asobilor QC45. QC2 through QC35ii, NC700, 700, SoundLink and AE2 models are named explicitly.
• Best for a straightforward, no-extra-features adapter → HIEbee Dual 3.5mm. Plug in, listen, done.
• Best for durability confidence in the connector → HIEbee Dual 3.5mm. The 2000 plug-and-unplug figure speaks directly to repeated seat-jack use.
• Best for a spare in every bag → HIEbee Dual 3.5mm. The 2-pack makes it easy to keep one at home and one in your travel kit.
• Best for the lightest possible carry → Asobilor QC45. At 10 g and about an inch square, it disappears in a pocket.
• Best for a warranty-backed purchase → Asobilor QC45. A limited one-year warranty and email support are part of the offer.
• Best for non-Bose headphones → HIEbee Dual 3.5mm. Its compatibility language is generic, so it fits whatever standard 3.5 mm wired headphones you own.
In my opinion, the Asobilor QC45 is the better buy for most people who fly with wired headphones. The folding plug is the deciding factor — it solves the single-versus-double jack problem in one small piece of kit, and the explicit Bose compatibility list removes any guesswork if you own one of those models. The one-year warranty and email support round it out.
That said, if you don't own a Bose headphone and you just want a cheap, simple adapter you can keep in two bags, I'd point you to the HIEbee Dual 3.5mm instead. The 2000-cycle rating and 2-pack make it the more practical pick for the "throw it in the carry-on and forget it" traveler. Either way, check the current price on Amazon before you commit — the button on this page takes you straight there.
Yes, in my view, if you value the folding plug. It converts between single and double jacks, which a plain adapter like the HIEbee doesn't do. If you never run into the wrong jack layout, the simpler HIEbee is fine.
Yes. The compatibility list names QuietComfort 2, QC3, QC15, QC20, QC25, QC35, QC35ii, NC700, Bose 700, SoundLink, SoundLinkII, AE2, AE2i and AE2W. If your model is on that list, it's an intended match.
Yes. It's compatible with most devices that use a standard single or dual 3.5 mm output, so it isn't tied to any one brand. Just make sure your headphones use a standard 3.5 mm plug.
Hard to say definitively from specs alone. HIEbee cites 2000 plug-and-unplug tests, which speaks to connector durability. Asobilor offers a limited one-year warranty. Both use gold-plated connectors to reduce interference and extend service life.
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