How We Research
We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Updated: 2026-09-23 · 6 min read · Independent comparison
• Anker Soundcore AeroFit — biggest strength: an open-ear hook design that keeps you aware of traffic and announcements, plus IPX7 waterproofing and SweatGuard protection for hard training.
• Anker Soundcore AeroFit — biggest trade-off: no active noise control, no LDAC, and an open fit that lets outside sound in by design.
• FiiO EH11 — biggest strength: LDAC high-resolution Bluetooth at up to 990kbps, a 40mm long-stroke driver with bass down to 17Hz, and a physical knob you can operate blind.
• FiiO EH11 — biggest trade-off: it's an on-ear headphone, so it's bulkier than a hook earbud, and it isn't rated for water or sweat.
• Pick Anker Soundcore AeroFit if you train outdoors, run in the rain, and want your ears left open to the world.
• Pick FiiO EH11 if you sit down to listen, care about codec quality, and want the low end to actually hit.
The AeroFit is built around one idea: keep your ear canal open. Instead of sealing sound in, it hooks over the ear and aims audio at you while leaving the world audible. If you've ever pulled an earbud out at a crosswalk to hear whether a car was coming, that's the exact problem this design solves. The composite diaphragms with titanium-coated domes are tuned for balanced mids and clear highs rather than thump, which suits podcasts, calls and background music more than bass-heavy tracks.
The durability story is the real differentiator. IPX7 means it survives being submerged, and soundcore's SweatGuard nano-coating plus a sealed internal chamber protects the components that usually die first on workout buds. Battery life is rated up to 46 hours, with a one-hour charge time, and Bluetooth 5.3 keeps the connection current. Four mics with an AI noise-reduction algorithm handle calls, and touch controls plus app support let you adjust without pulling out your phone. At 5.12 ounces for the package, it's light enough to forget you're wearing it.
FiiO EH11: Who It's For
The EH11 is the opposite philosophy. It's an on-ear headphone that prioritizes sound quality above everything else. LDAC support at up to 990kbps — roughly three times the data rate of standard SBC or AAC — means it can carry near-lossless wireless audio, which is the headline feature here. The 40mm long-stroke dynamic driver with a high-damping composite diaphragm pushes resonance down to 60Hz with extension to 17Hz, so bass has real depth rather than a mid-bass bump. The semi-open back adds openness to the soundstage while keeping some listening privacy.
Comfort is handled with numbers rather than marketing: about 92g total weight and a low 1.7N clamping force, which is the kind of spec that matters over a three-hour session. A 1.5-hour charge gives up to 30 hours of playback. Dual-device Bluetooth lets you stay paired to a phone and a computer simultaneously and switch between them without re-pairing — genuinely useful if you take calls while working. The FIIO Control App adds EQ presets and a gaming mode tuned to lift footsteps and gunshots, and there's a built-in HD mic for voice chat.
The physical design is a deliberate throwback: a transparent mechanical structure with a wood-grain control knob you can operate by feel for volume and tracks, no screen-look required. Detachable foam ear pads make cleaning easy, and two pairs of different-colored pads ship in the box. Who should buy it: home listeners, PC gamers, remote workers, and anyone who wants LDAC without a cable. Who should skip it: swimmers, heavy sweaters and outdoor athletes — there's no water or sweat rating here, and an on-ear headphone isn't the shape you want mid-run.
• Best for high-resolution wireless audio → FiiO EH11. LDAC at up to 990kbps is the single biggest technical gap between these two.
• Best for bass depth → FiiO EH11. A 17Hz low-end extension from a 40mm long-stroke driver is a different league from an open-ear hook.
• Best for working out and rain → Anker Soundcore AeroFit. IPX7 plus SweatGuard is the clear win for sweat and water.
• Best for battery life → Anker Soundcore AeroFit. Up to 46 hours versus 30, and it charges faster at one hour versus 1.5.
• Best for situational awareness → Anker Soundcore AeroFit. The open-ear fit is the entire point; the EH11 is semi-open but still an on-ear headphone.
• Best for calls and meetings → FiiO EH11, if you value the dual-device connection and built-in mic for hopping between phone and laptop. The AeroFit counters with four mics and AI noise reduction, so this one is closer than it looks.
• Best for long listening sessions → FiiO EH11. 92g and 1.7N clamping force is designed for fatigue-free wear over hours.
• Best for touch-free control and retro character → FiiO EH11. The wood-grain knob means you never need to look at your phone to change tracks.
I'd buy the FiiO EH11. Not because it's better in every way — it isn't — but because "LDAC headphones" is the search that brought you here, and the EH11 is the one that actually delivers on it. LDAC at up to 990kbps, a 40mm driver reaching down to 17Hz, dual-device pairing and a knob you can find blind add up to a headphone built for serious listening. The AeroFit is the smarter pick if your ears need to stay open and your workouts get sweaty, and I'd recommend it without hesitation for that job. But if you're choosing one pair for music first, the EH11 is my pick. Check the current price on Amazon before you commit — that's the last variable I can't speak to.
what is ldac headphones
LDAC is a Bluetooth audio codec that transmits at up to 990kbps, roughly three times the data rate of standard SBC or AAC. Headphones that support it can receive near-lossless high-resolution audio wirelessly. The FiiO EH11 supports LDAC; the Anker Soundcore AeroFit does not list it.
what is ldac support in headphones
It means the headphone can decode Sony's LDAC codec when the source device sends it. You need both ends to support it — a phone or player set to LDAC and a headphone that accepts it. When both match, you get noticeably more detail than a standard Bluetooth codec allows.
what is ldac codec in headphones
It's a high-resolution Bluetooth codec with three transmission modes, topping out at 990kbps, designed to carry more musical information than SBC or AAC. In practice it matters most on well-recorded tracks where cymbal decay and low-end texture are audible. The EH11's LDAC support is the reason it's the better pick for critical listening.
what is ldac sony headphones
LDAC was developed by Sony and is used across its wireless audio lineup, but it isn't exclusive — other brands license it, including FiiO. So you don't need Sony hardware to get LDAC audio; you need a source that transmits it and a headphone like the EH11 that receives it.
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See also: Anker Soundcore AeroFit 2 vs CXK Open Ear Headphones, Anker Soundcore AeroFit 2 vs inscamera Open Ear Headphones, AYI True Bone Conduction vs Anker Soundcore AeroFit 2