Letshuoer • IEMs
Letshuoer Cadenza 4
Open pageThe 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.
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.