# Letshuoer S12 Ultra 14.8mm Planar Driver IEM with 2-Pin Silver-Plated Cable \(Gunmetal Grey, 3.5mm/4.4mm\)

Letshuoer S12 Ultra IEM with 14.8mm planar driver and detachable 392-core silver-plated cable, enjoy dual connectors and a DAC cable for broad device.

- [Original product page](https://www.ofertitastop.com/us/product/letshuoer-s12-14-8mm-planar-driver-1)
- [View offer](https://www.ofertitastop.com/us/visit/letshuoer-s12-14-8mm-planar-driver-1)
- Market: US
- Language: en-US
- Currency: USD
- Product updated: 2026-10-23T22:31:58.543Z
- SKU: ofertitastop-us-91833
- Category: Electronics > Audio > Audio Components > Headphones & Headsets > Headphones
- Source store: amazon US
- Active deal: Yes
- Price: 143.65 USD
- Previous price: 169.00 USD
- Discount: 15%
- Rating: 4.4 / 5
- Reviews: 88

Prices and deal status are the latest recorded data, not a guarantee of availability. Confirm the price and availability with the store.

## Description

## What matters most
The Letshuoer S12 Ultra represents a focused step into planar magnetic sound within an in-ear monitor. Its 14.8mm planar driver is designed to deliver extended high frequencies, precise detail, and a sense of air across tracks, aiming to satisfy listeners who care about resolution and timbre. On paper, this model shares a design language from the S12 series while reworking the housing around the female connector for a more robust fit. If your priority is a musical presentation that feels open and layered, the S12 Ultra is positioned to deliver that sense of stage and clarity.

## Tech specs
The core of the sound comes from a 14.8mm planar driver, tuned to emphasize natural highs with airy detail. The signal path is aided by a 392-core silver-plated copper cable, chosen for conductivity and reduced interference, which helps reveal micro-details and dynamic responses without obvious loss. Connectivity is versatile thanks to interchangeable 3.5mm and 4.4mm connectors, broadening compatibility with different sources. The package includes a DT01 Pro 3.5mm to Type-C DAC amplifier cable, intended to reduce friction when connecting to modern mobile gear.

## What stands out
If you value a high-frequency extension and a sense of space in the mix, the S12 Ultra’s design aims to deliver that with a more integrated housing. The dual-plug option (3.5mm and 4.4mm) adds practical flexibility when pairing with portable players or desktop DAC/amp setups. The 392-core cable is a meaningful upgrade for signal integrity and micro-detail retrieval, which can matter for instrumental tracks or complex orchestral soundscapes.

## Pros
- Planar driver approach may offer more air and detail in the highs compared to typical dynamic drivers.
- Silver-plated cable can help with conductivity and reduce interference, contributing to cleaner transient response.
- Dual connector format supports a wider range of source gear.
- Included DAC/adapter cable simplifies setup with devices lacking a dedicated balanced output.

## Cons and limitations
- Planar IEMs often show differences in bass impact and micro-dynamics versus traditional drivers, some listeners may find the bass response less assertive depending on fit and seal.
- The benefit of a high-frequency extended presentation can come with a need for a good seal and proper source pairing, misfit can reduce perceived detail.
- As with most hi-fi wired IEMs, portability and durability of the stock cable may vary with handling, ensure the 2-pin connection remains secure through use.
- Without trying it, it’s hard to know if the re-engineered housing improves comfort for your ear shape, fit is still a critical variable.

## Usage tips
- Aim for a good seal with your chosen tips to unlock the full planar detail and airiness in the highs.
- Pair with a source that has clean, low-noise output and an appropriate DAC/amp to avoid hiss or compression at louder listening levels.
- If you often switch between sources, use the 4.4mm connector for desktop or balanced-like portable rigs and 3.5mm for standard unbalanced devices.
- Start with shorter listening sessions to gauge how the highs interact with your typical music genres—classical and acoustic tracks often reveal the most about extension and detail.

## What’s included
The package is noted to include the DT01 Pro 3.5mm to Type-C DAC amplifier cable, expanding compatibility for devices without a dedicated 4.4mm/3.5mm output. The gunmetal grey finish gives a subdued, mature aesthetic that may fit well in professional or home setups.

## Is it worth it?
You’ll appreciate it if you’re after an intimate, detailed high-end presentation and you have sources that can drive planar drivers without introducing noise. It may not be the best fit if you prioritize a stronger sub-bass presence or if you mainly listen on low-power mobile devices where the driver’s peak performance can be underutilized. Consider your typical music style, seal quality, and whether you value the flexibility of interchangeable connectors.

## Quick FAQs
- Do these drivers require a lot of power? They benefit from clean amplification, but the included DAC/adapter helps with mobile use.
- Will they work with my Android phone? Yes, via the 3.5mm or with the included DT01 Pro adapter, depending on your dongle setup.
- Are they heavy on listening fatigue? That depends on the fit and the track, some listeners may find the highs resolving but long sessions require a comfortable seal and proper eartips.

## Final take
If your goal is a refined, airy high-end experience with flexible source compatibility, the Letshuoer S12 Ultra offers a coherent package—especially for listeners who already value detail and extension in the upper registers. It’s worth trying if you can pair it with capable sources and don’t mind investing in a good seal to unlock the full potential of the planar driver.

## Images

![Letshuoer S12 Ultra 14.8mm Planar Driver IEM with 2-Pin Silver-Plated Cable \(Gunmetal Grey, 3.5mm/4.4mm\) — 1](https://www.ofertitastop.com/i/z0rFHcgR6vvOp6T7dG2oiqwK0-13sqUS7mmoeZtoXuyOUEj3o4M6XlQ8d1f9xXY48VRndHY_KrvZZDAONKRxA2jAuSvX6AhVCXaY19xLOFIlSOKSW74fFRiSCQ.jpg)

![Letshuoer S12 Ultra 14.8mm Planar Driver IEM with 2-Pin Silver-Plated Cable \(Gunmetal Grey, 3.5mm/4.4mm\) — 2](https://www.ofertitastop.com/i/IYDEpIhFVUiBr7118DMVaDAYMIb1qFQG4EuIvN_6aK_3toQjOXHPCNB_OqvDnNnN5ZUs0P0Lx3YbZ-i2p0bnj9tzf7BPLiXA1OX4sYpa0MGI5IHTTCaI-JuLwg.jpg)

![Letshuoer S12 Ultra 14.8mm Planar Driver IEM with 2-Pin Silver-Plated Cable \(Gunmetal Grey, 3.5mm/4.4mm\) — 3](https://www.ofertitastop.com/i/um1OaNk8OwiM8REN4wcXHuOT7zd3SgaH19xhC1FEtLF3fzLneOxaRi2pJTOEm34LzkqQUegX7-sVQr9UXAjtvvltb3eUoPGsRR9uTYn3XY4cw5jRFln0WgEIqA.jpg)

![Letshuoer S12 Ultra 14.8mm Planar Driver IEM with 2-Pin Silver-Plated Cable \(Gunmetal Grey, 3.5mm/4.4mm\) — 4](https://www.ofertitastop.com/i/2YiRkLRuBJJb0F6yZlVPXxtaYvKSUWVsNVnKbTty9UZLKwKVa27eNYRGeAx7iy5OePF3jGTb210VoCTi4kN7LGjnkdCE1aDSGcEpDNGr74FzcmuPNgxovqzDvQ.jpg)

![Letshuoer S12 Ultra 14.8mm Planar Driver IEM with 2-Pin Silver-Plated Cable \(Gunmetal Grey, 3.5mm/4.4mm\) — 5](https://www.ofertitastop.com/i/XKLKQM7npLJWIoQGoJzACVR6TFiPfW_KKmwxGDo6Toq2NgJN5qYzQYsYZPyU4DvGvTB-UMCBL0bkD70fAVYMTCZN0yGNl1F1YVboVbDkP1Ez3BzhSK4EZekBFQ.jpg)