If you want open-back wired headphones for spacious, natural listening at home, choose Linsoul Kiwi Ears Ellipse; if you need a more materially distinctive over-ear design with a stated 20 Hz–40 kHz range, choose HIFIXAUDIO Kiwi Ears Altruva. For gym use, I would choose neither as a sweat-ready wireless option: both are wired, open-back headphones, and neither sheet states sweat resistance.
Linsoul Kiwi Ears Ellipse vs HIFIXAUDIO Kiwi Ears Altruva at a Glance
• Linsoul Kiwi Ears Ellipse: Its open-back presentation and balanced tuning are suited to immersive listening; the trade-off is limited isolation and wired-only use.
• HIFIXAUDIO Kiwi Ears Altruva: Its stated 20 Hz–40 kHz range and combination of steel, wood, and vegan leather set it apart; it is still wired and open-back.
• Choose the Ellipse if you want a detachable cable with 3.5 mm and 6.35 mm connections, plus tuning described as warm, balanced, and natural.
• Choose the Altruva if its stated monitor-style tuning, material choices, and 3.5 mm and 6.35 mm connections fit your listening setup.
• For the gym: Neither is described as wireless or sweat-resistant, so neither is a clear match for workouts that involve movement or perspiration.
The Ellipse is built around a 50 mm dynamic driver with PU and PEK composite diaphragms, a copper ring, and a stated frequency range of 20 Hz–20 kHz. The product information describes its sound as balanced and natural, with impactful bass, warm low-mids, and clear highs. That points toward someone who wants music, vocals, and instruments to sound full without relying on an overwhelmingly bass-heavy presentation.
Its open-back construction is the key listening trade-off. It allows airflow around the drivers and is intended to create a wider, more speaker-like soundstage, with airy treble and depth in the lows. But open-back headphones provide less isolation from outside noise. I’d see the Ellipse as a better fit for a quieter room, desk, or listening area than a noisy commute, shared gym floor, or setting where you need to keep sound contained.
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We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Updated: 2026-10-17 · 7 min read · Independent comparison
The Altruva also uses a 50 mm dynamic driver and an open-back design, but its stated frequency range extends from 20 Hz to 40 kHz. Its description emphasizes fast, powerful bass, a balanced midrange, and airy treble. Those details make it a plausible choice for listeners who want a broad, detailed presentation for music, mixing, or gaming, while remembering that a frequency-range figure alone does not establish how a headphone will sound to every listener.
Its construction is a notable point of difference: the product description names PVD-coated steel, genuine wood, and vegan leather. That material combination may appeal to someone who cares about a more distinctive-looking, substantial design as well as sound. The sheet also describes an over-ear fit for extended listening, though it does not provide dimensions or weight, so I wouldn’t infer how it will fit a particular head from the available information alone.
The Altruva is wired, with 3.5 mm and 6.35 mm jack options listed. Like the Ellipse, its open-back design is meant to support an expansive soundstage, but it also means less isolation from surrounding noise. Neither its listed features nor its product information identify wireless playback or sweat resistance. Skip the Altruva if you need a wireless gym headset, isolation in a loud space, or a documented sweat-resistant design.
• For tuning described as balanced and natural → Linsoul Kiwi Ears Ellipse. Its sound description calls out impactful lows, warm low-mids, and clear highs.
• For the stated wider frequency range → HIFIXAUDIO Kiwi Ears Altruva. Its listed range is 20 Hz–40 kHz, compared with 20 Hz–20 kHz for the Ellipse.
• For a detachable cable → Linsoul Kiwi Ears Ellipse. That feature is specifically stated for the Ellipse and can make cable replacement or setup changes more practical.
• For listed 3.5 mm and 6.35 mm connections → Either. Both product sheets name those two plug sizes.
• For an open-back, spacious listening presentation → Either. Both designs are described as open-back, with an emphasis on airflow and a wide soundstage.
• For a design featuring PVD-coated steel and genuine wood → HIFIXAUDIO Kiwi Ears Altruva. Those materials are specifically named in its description.
• For a quieter listening space rather than a noisy one → Either. Both trade isolation for an open-back design.
• For the gym → Neither is a confident fit. Both are wired, and neither product information states sweat resistance or wireless connectivity.
Buying Considerations
For a gym routine, consider whether a cable would get in the way and whether you need a product with explicitly stated sweat protection. Neither sheet answers the second question in the affirmative. Their open-back construction also leaves more outside sound audible than a closed, isolating design would, which may be a downside around loud equipment or in shared spaces.
The “best comfortable wireless headset for gym” is not a description that fits either model: both are wired. Comfort claims are also limited. The Ellipse is described as lightweight, with padded vegan-leather headband and earpads intended for extended listening. The Altruva is described as comfortable for longer sessions and uses vegan leather, but no weight or fit measurements are given. If gym use is your priority, don’t assume that over-ear comfort claims establish suitability for exercise.
For home listening, the decision is more straightforward. Both offer open-back construction and a 50 mm dynamic driver, so consider their sound descriptions, connection details, and materials. The Ellipse gives specific tuning notes and a detachable cable. The Altruva gives a broader stated frequency range and names steel and genuine wood in its construction. Neither frequency range nor material list alone guarantees that one will sound or feel better to you.
I would choose the Linsoul Kiwi Ears Ellipse for a quiet listening setup because its sound description is specific, its cable is detachable, and its padded design is presented for extended sessions. I prefer that combination for focused music listening over the Altruva’s less detailed comfort information. For the gym, though, I would buy neither: neither is wireless or stated to be sweat-resistant.
Neither is an obvious gym choice based on the listed features. Both are wired, open-back, over-ear headphones, and neither product information states sweat resistance.
Which has a wider stated frequency range?
Both are open-back designs, and the Ellipse description explicitly notes lower outside-noise isolation. Their open construction is intended to support airflow and a wider soundstage, not to block surrounding noise.
Check the current price on Amazon before deciding, then compare the features that matter to you. The Ellipse offers a detachable cable and detailed tuning description; the Altruva lists a 20 Hz–40 kHz range and a construction using PVD-coated steel and genuine wood.
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