How We Research
We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
If you want true wireless earbuds with active noise cancellation, six microphones for calls and Snapdragon Sound, choose EarFun Air Pro 3; if you need a pocket-sized Bluetooth DAC/amp that can drive wired headphones over LDAC and aptX Adaptive with a swappable battery, choose FiiO /Snowsky Retro Nano.
• EarFun Air Pro 3 — biggest strength: a complete all-in-one wireless package. Hybrid ANC rated to cut noise by up to 43dB, six ENC mics with Qualcomm cVc 8.0, 11mm wool composite dynamic drivers and aptX Adaptive over Bluetooth 5.3.
• EarFun Air Pro 3 — biggest trade-off: it's a sealed in-ear system with a built-in battery, so you're locked into its tuning and you can't swap in your own wired headphones or replace the cells.
• FiiO /Snowsky Retro Nano — biggest strength: it's a real DAC/amp. Two high-performance DACs, up to 220mW balanced output, 3.5mm unbalanced plus 4.4mm balanced jacks, LDAC and aptX Adaptive, and a detachable 3.7V battery.
• FiiO /Snowsky Retro Nano — biggest trade-off: it makes no sound on its own. You still need wired headphones, and there are no microphones, no ANC and no earbuds in the box.
• Who each pick is for: the EarFun is for commuters, callers and gym-goers who want one self-contained pair of earbuds; the Retro Nano is for wired-headphone owners who want to cut the cord without giving up their favorite cans.
The Air Pro 3 is built around Qualcomm's QCC3071 SoC and aptX Adaptive, and that combination is the whole point. aptX Adaptive is the codec here that matters — it's designed to scale between lower-latency and higher-quality modes depending on what you're doing, which is why it suits both music and video. The listed latency figure is 55 milliseconds, and the driver is an 11mm wool composite dynamic unit with a stated 20 Hz – 20,000 Hz range. In plain terms: this is a bass-forward, high-fidelity-leaning tuning rather than a flat studio signature.
The feature list reads like a commuter's checklist. Hybrid ANC (EarFun calls it QuietSmart 2.0) is rated to reduce environmental noise by up to 43dB, and there are selectable noise-cancelling modes so you can dial the level to your surroundings instead of being stuck on one setting. Six microphones work with Qualcomm cVc 8.0 ENC to isolate your voice and push down wind and background noise on calls — that's the part that matters if you take meetings on a train platform rather than in a quiet office. Snapdragon Sound and Hi-Res decoding up to 24bit/96kHz round out the audio side.
Bluetooth 5.3 with multipoint is the quiet hero. The earbuds hold two devices at once, so a call on your phone doesn't force you to disconnect from your laptop. Add a stated 8 hours of playback per charge, a 1-hour charge time, a 2-hour case charge and a 15-metre wireless range, and the daily routine works: charge the case overnight, forget about it for a day or two of normal use.
FiiO /Snowsky Retro Nano: Who It's For
The Retro Nano is a different species of product entirely, and it's worth being blunt about that. It's a Bluetooth USB DAC/amp, not a pair of headphones. It outputs to 3.5mm unbalanced or 4.4mm balanced jacks, runs two high-performance DACs, and is rated at up to 220mW of balanced output power. That number is the reason it exists: it's there to give wired headphones real current, including the harder-to-drive models that a phone's headphone jack (if your phone even has one) simply can't push properly.
Wireless-wise it supports LDAC, aptX Adaptive and aptX LL, so it covers both the high-bitrate listening case and the low-latency case for watching video or gaming. It pairs with your phone or computer over Bluetooth and feeds your wired headphones from there — a neat middle path if you like your existing cans but hate the cable tether to your source.
The personality of the thing is where it gets fun. The UI deliberately imitates a classic cassette player, both in shape and on-screen interface, and there are eight custom-tuned retro-inspired sound effects baked in. You can also tune it yourself through an app and a web interface, so the EQ isn't fixed — you can build a signature that suits your headphones and your taste. That's a level of adjustability you simply don't get from a sealed pair of earbuds.
Battery is handled differently too. It uses a detachable, rechargeable 3.7V lithium battery rated for up to 7.5 hours of continuous playback, and because it's removable, a spent cell is a replacement rather than a dead device. It ships with a cable and carries a 1-year warranty. It weighs 0.11 kg.
Buy it if you own wired headphones, care about output power and codec support, and want something small, characterful and tunable to sit between your phone and your cans. Skip it if you want earbuds, noise cancelling, microphones or anything that plays sound by itself — none of that is here.
Side-by-Side: Which Should You Choose?
• Best for phone calls → EarFun Air Pro 3. Six ENC microphones with Qualcomm cVc 8.0. The Retro Nano has no microphone — you'd still be taking calls on your phone.
• Best for driving wired headphones → FiiO /Snowsky Retro Nano. 3.5mm and 4.4mm outputs with up to 220mW balanced. The Air Pro 3 only drives its own built-in 11mm drivers.
• Best for long-term battery life → FiiO /Snowsky Retro Nano. Its 3.7V battery is detachable and replaceable, so the device isn't tied to one cell's lifespan.
• Best for all-day wireless convenience → EarFun Air Pro 3. 8 hours per charge, a charging case, and Bluetooth 5.3 multipoint across two devices.
• Best for tuning your own sound → FiiO /Snowsky Retro Nano. Eight retro-inspired effects plus DIY EQ via app and web interface. The Air Pro 3 gives you its tuning as-is.
• Best for low-latency video and gaming → either, on spec. Both list aptX Adaptive, and the Air Pro 3 states 55ms latency. The Retro Nano adds aptX LL for an even more latency-focused mode.
• Best for a no-extra-gear setup → EarFun Air Pro 3. Everything you need is in the box. The Retro Nano's box is a cable — your headphones are the rest of the system.
In my opinion, the EarFun Air Pro 3 is the one I'd buy for the vast majority of people. It's self-contained: noise cancelling, six mics, multipoint, aptX Adaptive and eight hours per charge in a product you take out of the case and use. The Retro Nano is genuinely more interesting, and I'd recommend it without hesitation to a specific person — someone who owns good wired headphones, wants LDAC and 220mW of balanced output, and enjoys dialing in their own sound with a replaceable battery as a bonus. But if you don't already own wired headphones you love, the Retro Nano is half a system. Buy the Air Pro 3 unless the Retro Nano is exactly the missing piece you've been looking for.
FAQ
what is aptx adaptive headphones
No. It uses a built-in battery rated at 8 hours of playback per charge, with a 1-hour charge time for the earbuds and 2 hours for the carrying case. If you specifically want a swappable battery, that's the FiiO /Snowsky Retro Nano, which uses a detachable 3.7V lithium battery rated for up to 7.5 hours.
Not on its own. It's a Bluetooth USB DAC/amp with no listed microphones and no noise cancelling, so it passes audio to your wired headphones rather than handling calls itself. For calls you'd want the EarFun Air Pro 3, which has six ENC microphones with Qualcomm cVc 8.0.
In my opinion, the FiiO /Snowsky Retro Nano — it exists to feed wired headphones properly, with 3.5mm and 4.4mm outputs, up to 220mW balanced, LDAC, aptX Adaptive and a tunable sound. If you'd rather not deal with cables at all, the EarFun Air Pro 3 is the simpler route. Either way, check the current price on Amazon before deciding.
As an Amazon Associate I earn from qualifying purchases.
We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon and affiliated sites.
When you buy through links on this page, we may earn a commission from qualifying purchases at no extra cost to you.
Amazon and the Amazon logo are trademarks of Amazon or its affiliates. This site is an independent third-party review and is not affiliated with, endorsed by, or sponsored by Amazon or the product brands mentioned.
See also: Califone Headset ON-Ear W/GOOSENECK vs G GVOEARS Pads Replacement, Tayogo Bone Conduction Swimming vs Xmenha Open Ear Earbuds, Altatac Over Ear Headset vs JVC Gumy, Zopsc BT 5.4 vs Jectse Translation Earbuds