The LETSHUOER Cadenza 4 is a four-driver hybrid IEM that pairs a 10mm dual-chamber beryllium-coated dynamic driver with one Sonion and two Knowles balanced armatures through a four-way crossover, in 3D-printed resin shells. It suits listeners stepping up to a multi-driver hybrid who want 2.5mm, 3.5mm and 4.4mm plugs in the box.
Who the LETSHUOER Cadenza 4 is for
Hybrid fans: A 10mm dual-chamber beryllium-coated dynamic driver works with one Sonion and two Knowles balanced armatures, which LETSHUOER says bring resolution, midrange detail and treble extension.
Precise tuning: A four-way electronic crossover and three 50μm 3D-printed acoustic tubes split the frequencies, which LETSHUOER says cuts phase errors.
Multi-source listeners: Three right-angle plugs, 2.5mm, 3.5mm and 4.4mm, swap on the 392-strand cable for single-ended or balanced gear.
Long sessions: The 3D-printed resin shells, refined with HeyGears, are shaped for comfortable long-term wear.
Skip it if: your phone has no headphone jack; the Cadenza 4 ships with analog plugs only, so you will need a USB-C dongle DAC.
LETSHUOER Cadenza 4 key specs
Drivers: 10mm dual-chamber beryllium-coated dynamic + 1 Sonion BA + 2 Knowles BA per side
Crossover: Four-way electronic, three 50μm 3D-printed acoustic tubes
Impedance: 15Ω
Sensitivity: 102dB
Frequency response: 20Hz–40kHz
Shells: 3D-printed resin with anodized aluminum faceplates
Plugs: Interchangeable right-angle 2.5mm, 3.5mm and 4.4mm
In the box: Earpieces, cable, three plugs, 6 pairs of ear tips, carrying case, owner's manual
Genuine LETSHUOER stock. Free shipping on every order, 45-day returns.
LETSHUOER Cadenza 4 vs similar options
vs LETSHUOER S15: Uses a 14.8mm planar with a 6mm R-Sonic passive filtering module and the same 2.5/3.5/4.4mm plug set; pick the Cadenza 4 for its beryllium-coated dynamic driver plus Sonion and Knowles armatures.
vs AFUL Performer 5: Adds a fourth balanced armature (1DD+4BA) and RLC crossover correction; pick the Cadenza 4 for its beryllium-coated dynamic driver and its Sonion and Knowles armatures.
10mm beryllium-coated dynamic + 1 Sonion BA + 2 Knowles BA per side
Impedance
15Ω
Sensitivity
102dB
Frequency response
20Hz–40kHz
Connector
0.78mm 2-pin; interchangeable 2.5mm, 3.5mm and 4.4mm plugs
What's in the box
Cadenza 4 earpieces (pair)
1.2m 392-strand silver-plated copper cable
2.5mm, 3.5mm and 4.4mm modular plugs
6 pairs of ear tips
Carrying case
Owner's manual
Good to know
Buying from TonePier
Is this unit genuine?
Yes. Every unit we sell is genuine and brand-new, shipped in its original packaging, and backed by our 1-year TonePier warranty and 45-day returns.
Where does my order ship from, and how long does it take?
Every order ships from our warehouse in China, with full tracking, and most orders ship within 3 business days. Shipping is free on every order; most US orders arrive within 7–15 business days and most orders to other countries within 7–20 business days — see our shipping policy for details.
What if it isn't for me?
You get 45 days to decide. Keep the packaging, keep it in like-new condition, and send it back for a refund. Ear tips unsealed for hygiene reasons are fine — we expect you to actually listen.
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