In-Ear Monitors · Planar magnetic
Letshuoer S12 Ultra
All Letshuoer · MSRP $169
A wired in-ear monitor from Letshuoer using a single 14.8mm planar driver in an aluminum alloy housing. It ships with a 1.2m silver-plated copper cable with interchangeable 3.5mm and 4.4mm plugs and a DT01 Pro 3.5mm to Type-C DAC cable.
Specifications
| Frequency response | 20 Hz – 40 kHz |
| Sensitivity | 101 dB |
| Impedance | 16 Ω |
| Driver | 14.8 mm |
As stated by the manufacturer — not community data.
Will it drive? · On paper
Plays straight from a phone
A phone or laptop reaches full listening level. An amp is a choice, not a requirement.
| Needs, for 110 dB peaks | 0.36 V · 7.9 mW |
| Phone or laptop (≈0.70 V, 20 mW) | Enough |
| Dongle DAC/amp (≈2.0 V, 120 mW) | Enough |
Worked out from the stated 101 dB/mW and 16 Ω — not a listening test.
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