How We Research
We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Updated: 2026-09-30 · 6 min read · Independent comparison
• BlueAnt Pump X biggest strength: gym-ready over-ear design with active noise cancelling, transparency mode, and two sets of ear pads (everyday + cooling gel) in the box.
• BlueAnt Pump X biggest trade-off: it's an on-ear workout headphone first — the frequency range is listed as 20–200 Hz, so it's tuned around bass energy rather than hi-res detail.
• OPPO Enco X3s biggest strength: certified hi-res audio via LHDC 5.0, dual dynamic drivers, dual DACs, and 55dB hybrid ANC — a genuinely audiophile-leaning spec sheet in a true wireless earbud.
• OPPO Enco X3s biggest trade-off: in-ear buds mean you lose the airy, over-ear feel and the easy-swap physical controls, and battery life drops to 9 hours per charge when you run LHDC.
• Who BlueAnt Pump X is for: lifters, runners, and gym-goers who want one durable pair of over-ears that survives sweat and long sessions.
• Who OPPO Enco X3s is for: listeners who care about hi-res codecs, clean tonal balance, and strong noise cancelling for commuting or critical listening.
The Pump X is unapologetically a training headphone. BlueAnt built it around sweat resistance, a secure on-ear fit, and a metal-and-plastic frame that's meant to take a beating in a gym bag. The headline trick is the two-pad system: everyday cushioned pads come fitted, and a set of cooling gel pads is included so you can swap them in for intense sessions and cut down heat buildup around your ears. If your pads wear out, you replace them instead of the whole headphone — a small thing that matters if you use these five days a week.
Battery is the other standout: a listed 58-hour average life, with a 10-minute charge time for quick top-ups before you leave the house. Bluetooth 5.4, a braided USB-C to USB-C audio/charging cable, and a protective case round out the package. Buy it if you want one rugged pair of over-ears for the gym, runs, and long days. Skip it if your priority is hi-res codec support or reference-grade tonal accuracy — this is a performance headphone, not a critical-listening one.
OPPO Enco X3s: Who It's For
The Enco X3s is the opposite kind of product, and that's the point. These are true wireless in-ear buds co-engineered with Dynaudio, and the spec sheet reads like a hi-res checklist: LHDC 5.0 Hi-Res Audio certification, an 11mm dynamic bass driver paired with a 6mm planar tweeter, and dual high-resolution DACs for lossless reproduction. In plain terms, this is a pair designed to squeeze detail and natural tonality out of high-bitrate wireless streams rather than simply hit hard.
Noise cancelling is the other big number. OPPO rates it at 55dB of hybrid ANC across a 5500Hz range, which covers the usual suspects — traffic, plane rumble, office chatter. That's a meaningful step up from the Pump X's 35dB, and it matters most on commutes and flights. The buds are also IP55 rated, so dust, sweat, and heavy rain are covered, and they'll handle calls in bad weather.
Battery is where you need to read the fine print. You get 11 hours per charge, but that drops to 9 hours when LHDC is active — hi-res streaming costs you playtime. The case extends total listening to 45 hours, and it supports wireless charging. There's also a 24-month warranty, Bluetooth 5.4 with a 10-meter range, and touch controls. One quirk: the listed charge time is 11 hours, so plan on charging the case overnight rather than in a hurry.
Buy it if you want the best wireless sound quality you can get in a small bud, strong ANC, and you don't mind in-ear fit. Skip it if you hate silicone tips, want physical buttons, or need to top up in ten minutes.
Side-by-Side: Which Should You Choose?
• Best for hi-res audio → OPPO Enco X3s. LHDC 5.0 certification, dual drivers, and dual DACs are the whole reason to pick it.
• Best for battery life → BlueAnt Pump X. 58 hours average life, and a 10-minute charge gets you moving fast.
• Best for the gym → BlueAnt Pump X. Sweat-resistant build, secure on-ear fit, and cooling gel pads you can swap in.
• Best for comfort over long sessions → BlueAnt Pump X. Over-ear pads spread pressure instead of plugging your ear canal.
• Best for commuting and flights → OPPO Enco X3s. Deeper ANC plus IP55 weather resistance in a pocketable case.
• Best for physical controls → BlueAnt Pump X. Tactile buttons beat touch panels when your hands are busy or damp.
• Best for critical listening at home → OPPO Enco X3s. The Dynaudio-tuned profile and planar tweeter are aimed squarely at detail and tonality.
If I had to pick one, I'd take the OPPO Enco X3s — for the specific phrase "hi-res headphones," it's the only one of the two that actually claims hi-res audio certification, and the dual-driver, dual-DAC setup plus 55dB ANC is a lot of engineering in a tiny package. That said, I'd recommend the BlueAnt Pump X without hesitation to anyone whose headphones live in a gym bag. The cooling gel pads, 58-hour battery, and 10-minute quick charge solve real workout problems that the Enco X3s doesn't try to solve. Two different jobs, two different winners.
what is hi res headphones
Hi-res headphones are ones designed to reproduce audio at higher resolution than standard Bluetooth streaming allows — typically via a certified hi-res codec like LHDC 5.0, which the OPPO Enco X3s supports. The idea is to preserve more detail from a high-bitrate source. The BlueAnt Pump X is a Bluetooth headphone but doesn't list hi-res codec certification.
what is hi res audio headphones
Hi-res audio refers to audio with more detail than CD-quality playback, and hi-res audio headphones are built to carry that signal wirelessly without heavy compression. Look for a stated hi-res codec and capable drivers — the Enco X3s pairs LHDC 5.0 with dual dynamic drivers and dual DACs. Without that chain, you're hearing a compressed version of the track.
which headphones support hi res lossless
Of these two, the OPPO Enco X3s is the one with hi-res audio support listed — LHDC 5.0 certification at up to 192kHz/1Mbps wireless bitrate, which is what "hi-res lossless-style" wireless playback looks like in practice. Keep in mind your phone also has to support LHDC for you to get the full benefit. The Pump X focuses on bass output and workout durability rather than hi-res codecs.
do I need hi-res audio for the gym
Not really. In a noisy gym, ANC and a secure fit matter far more than codec bragging rights, which is why the Pump X's 35dB ANC, sweat resistance, and cooling gel pads are the more useful features there. Save hi-res listening for a quiet room or a commute, where the Enco X3s' LHDC 5.0 and 55dB ANC can actually show what they're worth. Match the headphone to the environment.
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: CCA CRA vs Linsoul 7Hz, LEKATO in-Ear Monitor MS-20 vs Hidizs ST2, BETAHEAR Bone Conduction Headphones vs C5G CSG True, iLive Electronics True vs SoundMAGIC ST80