The LETSHUOER S15 is a planar IEM that pairs a 3rd-generation 14.8mm planar driver with a 6mm R-Sonic passive filtering module, tuned for deep, textured sub-bass instead of the usual planar brightness. It's aimed at planar fans who want more weight down low; electronic, hip-hop and film scores benefit most.
Who the LETSHUOER S15 is for
Planar fans who want more bass weight: It keeps a planar driver's speed and puts deep, textured sub-bass underneath it.
Electronic, hip-hop and film-score listeners: These are the genres that gain the most from its sub-bass-first tuning.
Owners of balanced sources: The modular cable swaps between 2.5mm, 3.5mm and 4.4mm plugs, and a balanced output is what keeps the bass fully controlled.
Long listening sessions: The ergonomically polished shells stay comfortable through long sessions.
Skip it if: you want the typical bright planar presentation; the S15 trades that brightness for sub-bass weight.
Genuine LETSHUOER stock. Free shipping on every order, 45-day returns, 1-year warranty.
LETSHUOER S15 vs similar options
vs 7Hz Timeless 2: Planar too: 14.5mm driver, dual-sided coated diaphragm and dual N52 magnet arrays, voiced for fast, clean bass and even treble. Pick the S15 if you want its sub-bass-focused tuning.
vs SIMGOT SuperMix 5: Splits the work across an 8 mm dynamic, 2 BA, a micro planar and a bone conduction unit; the S15 relies on one 14.8mm planar plus a 6mm passive filtering module, tuned for sub-bass.
14.8 mm planar magnetic + 6 mm R-Sonic passive filtering module
Impedance
30 Ω
Sensitivity
106 dB/mW @ 1 kHz
Frequency response
20 Hz – 40 kHz
Connector
0.78 mm 2-pin; modular 2.5 / 3.5 / 4.4 mm plugs
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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