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We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Updated: 2026-10-02 · 6 min read · Independent comparison
• Hikapa X9 — biggest strength: sealed in-ear design with a balanced armature driver, ENC noise cancellation, deep bass and 3D surround stereo, plus a charging case that extends listening to roughly 48 extra hours.
• Hikapa X9 — biggest trade-off: it seals your ear canal, so you lose awareness of traffic and surroundings, and its touch controls can be triggered by a stray tap.
• Biyoso X52 — biggest strength: open-ear earhooks that stay put during running and let ambient sound in, paired with push buttons that avoid accidental touches and a Bluetooth 6.0 connection.
• Biyoso X52 — biggest trade-off: open-ear designs leak sound both ways, and with no noise cancellation you hear the world whether you want to or not. Total playtime tops out around 30 hours.
• Who each is for: Hikapa X9 for people chasing bass and quiet; Biyoso X52 for runners, cyclists and anyone who needs to hear what's around them.
The X9 is built around one idea: get sound deep into your ear canal and keep the outside world out. It uses a balanced armature driver, an in-ear seal and ENC (Environmental Noise Cancellation) that monitors ambient noise and lowers it so the stereo image comes through even in a noisy room. Hikapa also advertises Hi-Fi sound, deep bass and 3D surround stereo as a package, which tells you the tuning is aimed at impact rather than flat neutrality. If low-end punch is your priority, this is the design approach that delivers it — a sealed tip is what makes bass feel physical in the first place.
Battery is the other headline. Six hours on a single charge, plus a case that adds up to 48 more hours, means you can go days of commuting and gym sessions between top-ups. Bluetooth 5.3 handles the pairing, and Hikapa describes one-step pairing: open the case lid and the earbuds reconnect automatically. The buds weigh about 4.6 grams each with soft silicone tips, and Hikapa includes multiple tip sizes so you can match the seal to your ear — which matters, because a loose tip is the fastest way to lose bass.
Control is entirely touch-based: one tap for play/pause and calls, double tap to skip tracks, long press for volume, and a two-second hold to reject a call. Nanotechnology coating keeps sweat and rain from damaging the buds, so sport use is fair game.
Biyoso X52: Who It's For
The X52 takes the opposite approach. It's an open-ear design with ergonomic earhooks, so the driver sits outside your ear canal instead of inside it. Nothing plugs you up, nothing builds pressure over a long day, and you stay aware of your surroundings — which is exactly what you want on a road run or a busy commute. The earpiece shape is oval and the enclosure is plastic, keeping the buds light at roughly 4.3 grams each.
The driver is listed as an 8 mm dynamic driver with 16 mm full-range speaker coverage in the marketing copy, a 32-ohm impedance, a 20 Hz frequency response and 42 dB sensitivity — figures that point to an easy-to-drive, midrange-forward tuning rather than a bass-cannon signature. Be honest with yourself about that: open-ear physics simply can't produce the same low-end thump as a sealed in-ear, because there's no trapped air to pressurize. If deep bass is the whole reason you're shopping, that's the trade-off you're accepting.
What you get in return is control and connection. The X52 uses dedicated physical push buttons for playback, calls and volume, so a brush of your sleeve or a sweaty finger won't skip a track. Bluetooth 6.0 with dual-channel and multi-point pairing lets you switch between devices, the range is listed at 33 feet, and latency is quoted at 60 milliseconds — low enough that audio stays in sync with video. Battery is six hours per charge with the case extending it to 30 hours total, an LED display on the case shows the live battery level, and standby is quoted at 80 hours. Charging takes about two hours. A high-sensitivity microphone handles calls, and Biyoso includes a one-year warranty.
Who should buy it: runners, walkers, cyclists, office workers and anyone who wants situational awareness and buttons that behave. Who should skip it: bass obsessives, and people who want to disappear into music on a plane or train.
Side-by-Side: Which Should You Choose?
• Best for hearing your surroundings → Biyoso X52. Open-ear earhooks never block ambient sound, which is a safety feature as much as a comfort one.
• Best for total battery reserve → Hikapa X9. Six hours per charge with up to 48 additional hours in the case beats the X52's 30-hour total.
• Best for reliable controls → Biyoso X52. Physical push buttons eliminate the accidental taps that plague touch sensors during sweaty workouts.
• Best for noise reduction → Hikapa X9. ENC actively lowers ambient noise; the X52 lists no noise control at all.
• Best for long-wear comfort without pressure → Biyoso X52. Nothing enters the ear canal, so there's no plugged feeling over a long day.
• Best for gaming and low-latency pairing → Hikapa X9. Bluetooth 5.3 with one-step pairing and a bass-forward stereo image suits gaming and video.
• Best for multi-device switching → Biyoso X52. Bluetooth 6.0 with multi-point pairing makes hopping between phone and laptop straightforward.
I'd buy the Hikapa X9. In my opinion, if deep bass is the reason you're reading this comparison, the sealed in-ear design, balanced armature driver, ENC noise reduction and the enormous case battery make it the more complete package for music, gaming and commuting. The Biyoso X52 is genuinely the better choice for runners and cyclists who need open ears and dependable buttons — but it can't compete on low-end impact by design. Check the current price on Amazon before you commit, since both sit in a similar budget tier.
FAQ
what headphones have deep bass
what is bass in headphones
Bass is the low-frequency end of the audio range — roughly the bottom of the 20 Hz to 20 kHz span the Biyoso X52 lists in its frequency response. You feel it as punch and rumble rather than hear it as a note. A tight in-ear seal is what makes those low frequencies audible and physical.
what are headphones with good bass
A good bass headphone keeps the low end present without smothering vocals and detail. The Hikapa X9 pairs its bass-forward tuning with Hi-Fi stereo and ENC so the midrange doesn't vanish. The Biyoso X52 aims at a different target — clear, easy-listening audio with awareness of your surroundings.
what are earbuds with good bass
Sealed in-ear earbuds with soft tips you can size correctly. The Hikapa X9 ships with multiple silicone tip sizes, and getting that seal right is the single biggest factor in how much bass you actually hear. If you prefer open-ear earhooks like the Biyoso X52, expect less low-end by design.
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