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We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Updated: 2026-10-05 · 7 min read · Independent comparison
• Anker Soundcore P31i — biggest strength: a genuine all-in-one wireless package: adaptive ANC rated to cut noise by up to 52 dB, LDAC hi-res audio, six AI-enhanced mics, 50 hours total playtime and real-time translation in 100+ languages.
• Anker Soundcore P31i — biggest trade-off: it's a wireless in-ear bud with a plastic/rubber/silicone build and no headphone jack, so it lives and dies by Bluetooth and its own battery.
• iFi GO Link 2 — biggest strength: a proper hi-res wired signal chain — ESS DAC up to 32-bit/384kHz PCM and native DSD256, S-Balanced output, plus a bundle pair of titanium-plated dynamic-driver earphones.
• iFi GO Link 2 — biggest trade-off: it's wired, passive-only for noise isolation, and it does nothing on its own without a USB source device.
• Pick Anker Soundcore P31i if you want freedom from cables, active noise cancelling and a battery that outlasts a full day of classes.
• Pick iFi GO Link 2 if you already own a phone or PC and want the cleanest possible wired playback through a compact aluminium DAC.
The P31i is the "everything included" option. It's a true wireless in-ear bud built around an 11 mm dynamic driver with a 20 Hz–40 kHz frequency range, Hi-Res certification and LDAC support, so it can carry more musical detail than a standard Bluetooth codec allows. Around that core Anker has stacked convenience: adaptive ANC that detects your surroundings and adjusts itself, six microphones with an AI noise-reduction algorithm for calls, and a wind-noise reduction mode for outdoor use.
This is the bud I'd point a student toward for library work. Adaptive ANC handles the HVAC hum, the page-turners and the low murmur of a busy reading room, and touch controls mean you can pause, skip or switch modes without pulling your phone out. The extra trick is real-time AI translation across 100+ languages, which is genuinely useful if you're working through foreign-language material or talking with an international study group. Spatial audio is there for films and games between study blocks.
Who should skip it? Anyone who wants a wired, zero-latency signal path, anyone who dislikes in-ear buds with silicone tips, or anyone who already owns a dedicated DAC and good IEMs — the P31i would be redundant. And if you specifically want on-ear headphones for library use, this isn't that; it's an in-ear design.
iFi GO Link 2: Who It's For
The GO Link 2 is a different species entirely. It's a USB DAC and headphone amp — a small precision-milled aluminium alloy dongle that plugs into a phone, tablet or PC and takes over the digital-to-analogue conversion. It's 8% smaller than its predecessor and 29% lighter, which matters more than it sounds: this is a device you leave dangling from a laptop port, so weight and bulk are the whole point of the design.
The spec sheet is the story here. The ESS DAC handles up to 32-bit/384kHz PCM and native DSD256, THD compensation is claimed to cut distortion by 62%, and dynamic range enhancement adds up to 6 dB of extra dynamics. The output is S-Balanced, which halves crosstalk for a cleaner stereo image. Internally it uses silver-plated, twisted copper conductors. You can also customise filters through the iFi Nexis mobile app.
In this bundle you also get the AIRO Astra earphones: titanium-plated dynamic drivers chosen for fast transients and high detail retrieval, in a lightweight ergonomic housing with a secure fit. Note the noise control here is passive only — the isolation comes from the ear tips, not from electronics. And of course the whole thing is wired, so there's no battery to manage.
Who should buy it? The listener who cares about source quality. If you've been plugging decent earphones straight into a laptop's headphone jack and wondering why everything sounds flat, this is the upgrade path. It suits desk work, focused listening and anyone who keeps music running for hours while reading — no charging, no pairing, no codec negotiation.
Who should skip it? Anyone who wants active noise cancelling, anyone who wants to move around the room untethered, and anyone who doesn't want a cable between their ears and their device.
• Best for library study sessions → Anker Soundcore P31i. Adaptive ANC up to 52 dB plus 40–50 hours of playtime is built for long, quiet-focused stretches.
• Best for sound quality from a laptop or phone → iFi GO Link 2. 32-bit/384kHz PCM, native DSD256 and an S-Balanced output are a genuine step up over a stock headphone jack.
• Best for battery life → Anker Soundcore P31i. 50 hours total, 40 with ANC on, and 3.5 hours from a 10-minute charge. The GO Link 2 has no battery at all.
• Best for cable-free convenience → Anker Soundcore P31i. Bluetooth 6.1, touch controls, and a case that fits in a pocket.
• Best for travel weight → iFi GO Link 2. A 29%-lighter aluminium body that adds almost nothing to a bag.
• Best for calls and meetings → Anker Soundcore P31i. Six AI-enhanced mics with a wind-noise reduction algorithm.
• Best for language work and study groups → Anker Soundcore P31i. Real-time AI translation across 100+ languages.
• Best for zero-latency wired playback → iFi GO Link 2. No wireless link, no codec delay, no pairing.
• Best for listener comfort over long sessions → iFi GO Link 2's AIRO Astra earphones, thanks to the lightweight ergonomic housing and secure fit.
For a library, I'd buy the Anker Soundcore P31i. In my opinion, the case is simple: a library is a place where you want to control your environment, stay untethered and not think about charging — and the P31i gives you adaptive ANC, 40 hours with ANC on, touch controls and translation in one package. The iFi GO Link 2 is the better audio tool, but it's the better tool for a desk with a USB port and a listener who cares about the source chain. If that's you, buy the iFi. If you want one purchase that covers a full day of library work without cables, buy the Anker.
Yes, by design. The P31i uses active noise cancellation rated to reduce noise by up to 52 dB and adapts automatically to your surroundings. The GO Link 2 only offers passive isolation through the ear tips, so it depends on fit rather than electronics.
No. It's a USB DAC and headphone amp, so it needs a USB source device to function. The Anker Soundcore P31i, by contrast, works as a standalone Bluetooth 6.1 pair of earbuds with its own battery.
The Anker Soundcore P31i, without question. It's rated for 10 hours per charge and 50 hours with the case, or 8 and 40 hours with ANC on. The iFi GO Link 2 has no battery — it draws power from whatever it's plugged into.
In my opinion, the Anker Soundcore P31i. Active noise cancelling, touch controls, long battery and a pocketable case all suit library use better than a wired DAC. Choose the iFi GO Link 2 only if sound quality from a wired source matters more to you than convenience and isolation. Either way, check the current price on Amazon before deciding.
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