Letshuoer • IEMs
Letshuoer Cadenza 4
Universal Summary
The Cadenza 4 is a $249 quad hybrid: a 10mm dual-chambered beryllium-coated dynamic driver paired with three balanced armatures, one Sonion and two Knowles. The midrange is the centre of gravity. It is described as natural and organic in timbre, articulate, detailed, with vocals placed slightly forward, and one review is titled around the midrange being the defining trait. The physical package draws steady praise too: 3D-printed resin shells with a machined aluminum faceplate are light enough to disappear over long sessions, passive isolation runs from strong to superb once the tips seal, and the bundled 392-strand silver-plated monocrystalline copper cable ships with swappable 2.5mm, 3.5mm and 4.4mm plugs. The disagreements sit around that midrange rather than in it. Bass quality is not in dispute (good definition, texture, clean sub-bass extension, no boom), but mid-bass punch is: one review flags a lack of impact as a con while others hear punch that is simply held in check, and quantity shifts with ear tip choice. Treble is smooth, rounded and non-fatiguing, and the upper treble is repeatedly described as rolled off, yet readings split on whether the top end still comes across as open and airy. Imaging draws opposing verdicts, and stage size is read as either wide and spacious or merely sufficient. The intended audience is not contested: this is not a bass-first or V-shaped set, and listeners chasing slam are pointed elsewhere.
Sources
4
Research Version
manual-dossier-v1
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Strengths
- Midrange is the standout: natural, organic timbre with articulate, detailed vocals placed slightly forward.
- Bass is clean and well controlled, with good definition and texture and no boom or bleed into the lower mids.
- Light 3D-printed resin shells with a machined aluminum faceplate stay comfortable through long sessions.
- Passive isolation is strong once the tips seal, rated as high as best-in-class in one assessment.
- The 392-strand silver-plated copper cable carries swappable 2.5mm, 3.5mm and 4.4mm plugs out of the box.
- Treble is smooth and rounded, with harshness and sibilance kept low and fatigue avoided on long listens.
Weaknesses
- Mid-bass impact is contested and can read as short on punch; overall bass quantity is lower than many listeners expect.
- Bass quantity and upper-midrange heat both shift noticeably with ear tip choice, so the set is sensitive to tip rolling.
- Upper treble is described as rolled off, and one reading finds it short on brilliance, sparkle and air.
- Imaging draws conflicting verdicts and is rated the weakest of the technical traits in one assessment.
- The near-neutral tuning gives up the fun factor, which is called out as a con.
- Lower mids can carry a hint of thinness, leaving some vocals short on weight.
Best For
- Vocal-led listening where timbre and midrange detail matter more than low-end slam
- Long sessions that need a smooth, non-fatiguing top end rather than sparkle
- Listeners who want one IEM covering 2.5mm, 3.5mm and 4.4mm outputs without buying extra cables
- Noisy commutes and shared offices, where the strong passive isolation pays off
- Owners of capable sources, since the set is revealing and benefits from extra headroom
Measurements
Frequency response
- Letshuoer Cadenza 4 (L)
- Letshuoer Cadenza 4 (R)
- Harman IE 2019 (target)
Measured by Timmyv on squig.link · Measurement © Timmyv; publicly hosted squig.link data, cited with attribution. Confirm permission before commercial redistribution. · IEC 60318-4 (711) coupler
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What the research says
The Cadenza 4 is a $249 quad hybrid: a 10mm dual-chambered beryllium-coated dynamic driver paired with three balanced armatures, one Sonion and two Knowles. The midrange is the centre of gravity. It is described as natural and organic in timbre, articulate, detailed, with vocals placed slightly forward, and one review is titled around the midrange being the defining trait. The physical package draws steady praise too: 3D-printed resin shells with a machined aluminum faceplate are light enough to disappear over long sessions, passive isolation runs from strong to superb once the tips seal, and the bundled 392-strand silver-plated monocrystalline copper cable ships with swappable 2.5mm, 3.5mm and 4.4mm plugs. The disagreements sit around that midrange rather than in it. Bass quality is not in dispute (good definition, texture, clean sub-bass extension, no boom), but mid-bass punch is: one review flags a lack of impact as a con while others hear punch that is simply held in check, and quantity shifts with ear tip choice. Treble is smooth, rounded and non-fatiguing, and the upper treble is repeatedly described as rolled off, yet readings split on whether the top end still comes across as open and airy. Imaging draws opposing verdicts, and stage size is read as either wide and spacious or merely sufficient. The intended audience is not contested: this is not a bass-first or V-shaped set, and listeners chasing slam are pointed elsewhere.
Visible Sources
Approved source material
LetShuoer Cadenza4 Review
Calls it excellent value for a balanced, natural presentation with a wide stage, and lists a slightly rolled-off upper treble as the main drawback.
LETSHUOER Cadenza 4 Review: The Midrange King
Builds the whole review around the midrange, calls the isolation among the best available, and recommends the set to anyone who is not chasing a bass-heavy signature.
Review: Letshuoer Cadenza 4
Calls it a very impressive set and possibly the reviewer's favourite from the brand, aimed at balanced all-rounder listeners rather than bass fans.
LETSHUOER Cadenza4 Review
Reads the Cadenza4 as a near-neutral, timbre-first hybrid, praising natural mids and comfort while listing weak bass impact and a missing fun factor as the cons.
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