We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Updated: 2026-09-27 · 7 min read · Independent comparison
If you want a wired, bass-first in-ear with an aluminum rear housing and a semi-open duct design tuned purely for low-end punch, choose エレコム(ELECOM) EHP-GB100ABK; if you need a wireless over-ear with Bluetooth 5.0, a built-in mic, foldable portability and LED flair, choose THE PERFECT PART Bass.
• エレコム(ELECOM) EHP-GB100ABK — biggest strength: a 10 mm external-magnet dynamic driver with large neodymium magnets, a WFC paper/PU composite diaphragm and a rigid aluminum rear housing, all aimed squarely at deep, controlled bass.
• エレコム(ELECOM) EHP-GB100ABK — biggest trade-off: it is wired only (3.5 mm L-type plug, 1.2 m Y-type cord), and the semi-open ducted build means it will not isolate you like a sealed in-ear.
• THE PERFECT PART Bass — biggest strength: wireless freedom — Bluetooth 5.0, a 10 m range, touch media controls, a built-in mic and a claimed 10-hour battery, in a foldable over-ear frame.
• THE PERFECT PART Bass — biggest trade-off: no active or passive noise cancellation, and its bass story rests on driver type and tuning rather than the kind of dedicated acoustic engineering described on the ELECOM side.
• Pick the エレコム(ELECOM) EHP-GB100ABK if you listen wired, care about bass texture and detail, and want a sealed-ish in-ear fit you can tune with four ear-cap sizes.
• Pick THE PERFECT PART Bass if you want to move around untethered, take calls, and carry one pair for studying, travel and the gym bag.
This is a purpose-built bass in-ear. ELECOM's whole design brief here is low frequency: a 10 mm outer-magnet dynamic driver, large neodymium magnets in an external magnetic circuit, and a diaphragm made from high internal-loss WFC paper combined with PU. That last part matters more than it sounds. A diaphragm material with high internal loss absorbs unwanted resonance instead of ringing, which is exactly what keeps bass from turning muddy. Pair that with a lightweight CCAW voice coil for faster vibration response, and you get the recipe for bass that hits hard but still tracks the music.
Then there's the housing. The rear chamber is rigid aluminum, which the spec sheet says reduces unnecessary vibration coming off the driver yoke — again, cleaner low end rather than a boomy smear. And the semi-open construction, with ducts front and rear optimized for ventilation resistance, lets the diaphragm move more freely. That's the mechanical reason this thing can produce what ELECOM calls "overwhelming bass" while still keeping the midrange clear.
The fit system is worth calling out too. The "deep adjustable mounting position" ear-caps come in XS, S, M and L, and a better seal is the single biggest factor in how much bass you actually hear from any in-ear. If the stock tip doesn't seal, you're losing half the tuning. You also get a cord keeper and a pouch, plus passive noise cancellation from the physical seal — not electronics.
Buy it if: you want a wired, bass-forward in-ear for commuting, desktop listening or phone use, and you're willing to spend two minutes finding the right ear-cap size. Skip it if: you need wireless, want to take hands-free calls, or you hate cables — there's no Bluetooth here at all. Also skip it if you need heavy isolation on a loud train; a semi-open duct design leaks and lets sound in by nature.
This is the opposite philosophy: convenience first, with bass as the headline flavor. It's an over-ear wireless headphone running Bluetooth 5.0, which is the version that brought faster pairing, a more stable connection and lower latency for video. In practice that means lip-sync on YouTube and Netflix stays acceptable, and the connection holds across a room — the spec sheet lists a 10 m range. There's a built-in mic for hands-free calls, and touch controls on the earcup for media playback, so you're not reaching for your phone.
The design is unapologetically fun. Colorful LED lights on both earcups pulse with the rhythm of the music. Some people love that; some people will find it loud in every sense. It's a genuine differentiator, and it's clearly aimed at a younger, style-conscious buyer or someone who wants a bit of personality in their gear.
Practicality is decent for the category. The over-ear frame folds, so it collapses into a bag for travel, studying at a café or a flight. Battery life is rated at 10 hours per charge — enough for a couple of workdays of intermittent listening or a long-haul flight, though heavy all-day users will want to charge nightly. There's also a 3.5 mm jack listed, so you can fall back to wired listening when the battery runs out, which is a genuinely useful safety net on a wireless headphone.
Buy it if: you want wireless freedom, calls, touch controls and a foldable over-ear you can toss in a bag, and you like the LED look. Skip it if: you need noise cancellation — there is none, neither active nor passive — or if you're chasing maximum bass fidelity. Over-ear drivers in a wireless frame at this level typically deliver a fun, boosted low end rather than the textured, controlled bass the ELECOM's driver and diaphragm materials are engineered for. The warranty is also short at 30 days, so treat it as a budget-friendly everyday pair rather than a long-term investment.
• Best for deep, controlled bass → エレコム(ELECOM) EHP-GB100ABK. The external-magnet driver, composite diaphragm and aluminum housing are all bass-specific engineering.
• Best for wireless freedom → THE PERFECT PART Bass. Bluetooth 5.0 with a 10 m range and no cable at all.
• Best for calls → THE PERFECT PART Bass. Built-in mic and touch media controls; the ELECOM has no microphone.
• Best for fit customization → エレコム(ELECOM) EHP-GB100ABK. Four ear-cap sizes (XS/S/M/L) plus a cord keeper and pouch.
• Best for travel and portability → THE PERFECT PART Bass. The foldable over-ear design packs down; the ELECOM is small but tethered.
• Best for long sessions without charging → エレコム(ELECOM) EHP-GB100ABK. Wired means no battery to run down, ever. The wireless pair is rated 10 hours.
• Best for loud environments → neither, strictly. The ELECOM is semi-open and the Perfect Part has no noise control; if isolation is your priority, look elsewhere.
• Best for style and fun factor → THE PERFECT PART Bass. The rhythm-reactive LED lighting is the whole point of that design.
If your keyword is genuinely "deep bass" and you're choosing between these two, I'd buy the エレコム(ELECOM) EHP-GB100ABK. In my opinion, it's the only one of the two whose spec sheet reads like bass was the design goal rather than a bullet point — external neodymium magnets, a high internal-loss WFC/PU diaphragm, a CCAW voice coil and a rigid aluminum rear housing all exist to serve the low end, and the four-size ear-cap system lets you actually lock in the seal that bass depends on. I'd pick THE PERFECT PART Bass instead only if wireless, calls and foldability matter more to you than bass quality — and for a lot of casual listeners, that trade is completely reasonable. Either way, check the current price on Amazon before deciding, since value is personal.
That's a different brand, but the process is the same as for THE PERFECT PART Bass: power the headphones on, put them in pairing mode, then open your phone's Bluetooth settings and select the device. This pair uses Bluetooth 5.0 with a 10 m range, so keep the phone close during the first pairing.
Deep bass is the lowest audible frequency range, roughly the bottom of the 20 Hz–20 kHz band that the エレコム(ELECOM) EHP-GB100ABK covers. You hear it as rumble and weight in hip-hop, EDM and film soundtracks — it's about extension and control, not just volume.
Again a different brand, but the routine matches any Bluetooth headphone: enable pairing on the headphones, then select them in your phone's Bluetooth menu. If you'd rather skip pairing altogether, the エレコム(ELECOM) EHP-GB100ABK has no Bluetooth at all — it plugs straight into a 3.5 mm jack.
If you take calls, THE PERFECT PART Bass has a built-in mic plus touch media controls, so it's the practical pick. The エレコム(ELECOM) EHP-GB100ABK is a pure listening in-ear with no microphone, so for calls you'd use your phone directly.
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