• LETSHUOER S12 Ultra planar IEMs in Mocha with braided cable
  • LETSHUOER S12 Ultra 3.5mm and 4.4mm plugs with DT01 Pro USB-C DAC cable
  • LETSHUOER S12 Ultra 14.8mm planar driver, exploded view
  • LETSHUOER S12 Ultra 392-core silver-plated copper cable
  • LETSHUOER S12 Ultra in Mocha worn in the ear
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LETSHUOER

LETSHUOER S12 Ultra IEM — 14.8mm Planar, 3.5/4.4mm Plugs, USB-C DAC Cable

LETSHUOER S12 Ultra IEM — 14.8mm Planar, 3.5/4.4mm Plugs, USB-C DAC Cable
  • Genuine & Brand-New
  • Free Shipping · Ships from China
  • 1-Year Warranty
  • 45-Day Returns
$166.99 USD
$166.99 USD
Shipping calculated at checkout.
Color

The LETSHUOER S12 Ultra is a wired 14.8mm planar IEM in aluminum alloy shells, with a 392-core cable, interchangeable 3.5mm and 4.4mm plugs and a DT01 Pro USB-C DAC cable in the box. It suits listeners who want one planar IEM that works with a phone, a dongle or a balanced DAP.

Who the LETSHUOER S12 Ultra is for

  • Phone listening: The included DT01 Pro USB-C to 3.5mm DAC cable connects it to USB-C phones, tablets and laptops.
  • Single-ended and balanced gear: Interchangeable 3.5mm and 4.4mm plugs swap on the 1.2m, 392-core silver-plated copper cable.
  • Planar sound: LETSHUOER says it reworked the internal construction of the 14.8mm planar driver to unlock more of its resolution and dynamics; it is rated 16Ω and 101dB.
  • Comfort: The aluminum alloy shells are shaped to the ear, and LETSHUOER says they fit without pressure or pain.
  • Skip it if: you need a microphone for calls or game chat; the S12 Ultra has none.

LETSHUOER S12 Ultra key specs

  • Driver: 14.8mm planar magnetic
  • Impedance: 16Ω
  • Sensitivity: 101dB
  • Frequency response: 20Hz–40kHz
  • Connector: 0.78mm 2-pin, detachable
  • Cable: 1.2m, 392-core silver-plated copper
  • Plugs: Interchangeable 3.5mm and 4.4mm
  • USB-C: DT01 Pro USB-C to 3.5mm DAC cable included
  • Shells: Aluminum alloy; Mocha or Gunmetal Gray
  • In the box: Earpieces, cable, 3.5mm and 4.4mm plugs, DT01 Pro DAC cable, ear tips, carrying case, user manual

Genuine LETSHUOER stock. Free shipping on every order, 45-day returns.

LETSHUOER S12 Ultra vs similar options

  • vs LETSHUOER S12 PRO: Adds a 2.5mm plug to its swappable set; pick the S12 Ultra for its 392-core cable, the bundled DT01 Pro USB-C DAC cable and a 20Hz–40kHz rated response.
  • vs LETSHUOER S15: Adds a 6mm R-Sonic passive filter module and a 2.5mm plug; pick the S12 Ultra for the bundled DT01 Pro USB-C DAC cable and a lower 16Ω impedance.

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Specifications

Driver 14.8mm planar magnetic
Impedance 16Ω
Sensitivity 101dB
Frequency response 20Hz–40kHz
Connector 0.78mm 2-pin; interchangeable 3.5mm and 4.4mm plugs

What's in the box

  • S12 Ultra earpieces (pair)
  • 1.2m 392-core silver-plated copper cable
  • 3.5mm and 4.4mm interchangeable plugs
  • DT01 Pro USB-C to 3.5mm DAC cable
  • Ear tips
  • Carrying case
  • User 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.