TAS Commitment
Product Snapshot
Description
Letshuoer S12 Ultra – 14.8mm Planar Driver IEM
A Refined Evolution of the S12 Series
The Letshuoer S12 Ultra elevates the iconic S12 DNA with a more advanced 14.8mm planar driver, re-engineered housing, and upgraded cable architecture—all designed to deliver a smoother, more resolving, and truly immersive Hi-Fi listening experience.
Driver Evolution: Next-Level Planar Precision
At the heart of the S12 Ultra lies its meticulously tuned 14.8mm planar magnetic driver, refined through strict quality control and structural enhancements.
Expect:
-
Extended treble with natural air
-
Enhanced micro-detail retrieval
-
Improved driver consistency for cleaner, more effortless sound
This optimisation unlocks the full potential of planar IEMs—fast, textured bass, clean mids, and airy highs.
Design Evolution: Classic Aesthetic, Modern Engineering
The S12 Ultra embraces the classic S12 industrial design while introducing a re-engineered connector housing for improved durability and visual harmony.
The updated aluminium alloy chassis features refined surface finishing for a cohesive, premium look that stands out while staying true to the S12 design language.
Sound Quality Evolution: Richly Layered & Balanced
With deep driver customisation, the S12 Ultra delivers a sound signature that is:
-
Natural and transparent
-
Smooth yet detailed in the highs
-
Richly layered in the mids
-
Controlled and textured in the low end
The result is a timeless, balanced Hi-Fi experience suitable for critical listening, casual enjoyment, and professional monitoring.
Cable Evolution: Cleaner Signal, Better Performance
Equipped with a 392-core silver-plated copper cable, the S12 Ultra ensures:
-
Excellent conductivity
-
Lower signal loss
-
Strong anti-interference performance
The 0.78mm 2-pin interface also ensures wide cable compatibility for future upgrades.
Interchangeable Plugs & Mobile-Ready DAC
For maximum versatility, the package includes:
-
3.5mm & 4.4mm interchangeable plugs
-
DT01 Pro 3.5mm to Type-C DAC amplifier cable
This makes the S12 Ultra instantly compatible with phones, DAPs, dongle DACs, and amplifiers—offering purer transmission and stable connectivity wherever you listen.
Specifications
Model: Letshuoer S12 Ultra Wired In-Ear Monitor
Driver: 14.8mm Planar Magnetic Driver
Sensitivity: 101dB
Impedance: 16Ω
Frequency Response: 20Hz – 40kHz
Chassis Material: Aluminium Alloy
Cable: 1.2m Silver-Plated Copper (392-core)
Connector: 0.78mm 2-Pin
Plugs Included: 3.5mm & 4.4mm interchangeable
Inside the Box
-
S12 Ultra IEM Units × 2
-
Earphone Cable × 1
-
Interchangeable 3.5mm & 4.4mm Plugs × 1
-
Ear Tips × 6 pairs
-
DT01 Pro 3.5mm to Type-C DAC Amplifier Cable × 1
-
Carrying Case × 1
-
User Manual × 1
-
Warranty Card × 1
You May Also Like
"Unbeatable planar clarity, smooth treble, and deeply immersive soundstage at this price point!"
I recently purchased the Letshuoer S12 Ultra from The Audio Store, and pairing it with my Samsung S24 Ultra, FIIO BTR17 (via 4.4mm Balanced), and Apple Music Hi-Res Lossless has been nothing short of extraordinary. It delivers a truly world-class listening experience!
Key Highlights:
Planar Technicalities & Imaging: The 14.8mm Planar driver offers lightning-fast transients, laser-sharp instrument separation, and a surprisingly wide, holographic soundstage.
Smooth & Energetic Tuning: Compared to earlier S12 iterations, the Ultra brings a much smoother upper-mid/treble presentation with zero sibilance, while retaining authoritative, deep sub-bass rumble.
Synergy with BTR17: The dual ES9069Q DAC and clean THX amplification from the FIIO BTR17 give the S12 Ultra all the juice it needs to shine.
Build & Accessories: Excellent CNC aluminum shells, ultra-comfortable ergonomics, and a modular 3.5mm/4.4mm silver-plated cable right out of the box.
Verdict:
If you want an endgame-level portable audio setup without breaking the bank, look no further. Kudos to The Audio Store for the lightning-fast delivery and top-notch packaging! 🎧 absolute recommended!
As an all rounder it fits my taste quite well,the only problem it really has is the male vocals being a bit recessed (not terribly recessed if you use vocal eartips),they are a tad bit overpriced seemingly,divine planar might be better,but for people looking for a fun entry into iem's,it's worth the price (some people say it's included DAC isn't enough,it works well enough as a temporary solution,yet to test if a dac makes a big difference or not).
Unsure if this is how most iem's are but the cable felt a tad bit short.
The LETSHUOER S12 Ultra has completely transformed my daily listening experience. From the moment you hold them, the premium finish of the CNC-machined metal shells stands out, reflecting immaculate craftsmanship. Despite their solid, durable metallic build, they are incredibly lightweight in the ear. Thanks to the carefully contoured ergonomic design, they sit flush without creating any pressure points, causing absolutely zero fatigue or pain even during extended sessions with the provided stock ear tips, also I have changed to Audiocular Silicon ear tips, both are working fine.
However, the real magic lies in the acoustic performance. Driven by its refined planar magnetic driver, the sound quality is nothing short of exceptional. The tonality is beautifully natural, and the instrument separation is razor-sharp. What truly elevates this set for me is the vocal isolation; it carves out a distinct space for singers, making it an absolute joy for listening to Indian cinema tracks where emotional vocal delivery is key. It handles the grand orchestration of Bollywood and regional soundtracks effortlessly while scaling down beautifully for the acoustic nuances of English country music. The bass is deep, textured, and punchy, while the treble remains masterfully controlled—giving you all the clarity and detail without any trace of harshness or piercing sharpness.
A huge shoutout to Pritam from The Audio Store for recommending this absolute gem. If you want a smooth, highly resolving, and fatigue-free musical journey, the S12 Ultra is an easy recommendation.
SO this is my first planar IEM so I went in blind but it really surprised me.
The bass is very prominent but not muddy very tactile when it needs to be, you do feel the rumbles and the slam. It's safe to say it doesn't shy away from showing its characteristics planar bass ( although some people might still prefer the bass of DD, it was a pleasant change of pace. I didn't expect it)
The mids were very clean when I used it with a proper DAC, the one that comes with it but I found it does better if you give it more power. The mids are clean and smoother, fuller and heavy stating it's authority that it exist and dominant.
The treble is extremely smooth, the vocals are forward but not at your face. It's in a comfortable distant, isn't intimidating.
However in terms of sound stage and imaging, it lacked for me as I am used to the wide sound stage of SM4 but it is there. You can safely make out the instrument and their placement.
In all honesty, it was a perfect side grade IEM from my Simgot supermix 4. Gave me exactly what I wanted with a very generous packaging and accessories.
Excellent IEM if you are looking for your first Planar IEM
Recently Viewed
OUR HONEST REVIEWS FROM THE CO-FOUNDERS & AUDIOPHILES
View all
TRUSTED BY OVER 75,000+ MUSIC ENTHUSIASTS
Let customers speak for us
for me this is a game changer it helped me a lot .
value for money
it supports in all devices including macbook and ios devices .i am really satified with purchase . thank you
The Audiocular Beam Portable DAC is definitely worth it. The metal build along with the braided cable feels reassuring and sturdy, and the DAC never felt considerably warm even during longer listening sessions. It also maintains a somewhat neutral sound signature as far as I can tell, and noticeably increases the perceived volume of my KZ Castor Pros. Furthermore, I personally haven't heard any hissing noises on my IEMs, if that is something you're worried about. Finally, the red LED ring light is a cool touch, if a bit gimmicky and distracting during late-night listening sessions, but the bonus Audiocular carrying pouch along with the Type-A converter included in the package is what makes this a great deal. If you're looking for a DAC around ₹1,000, you should certainly consider the Audiocular Beam.
Such a good product is it and the quality of is top notch.
Really happy with the GK Kunten. The build quality feels premium for the price - sturdy metal-look faceplates and a nice detachable braided cable that doesn't tangle easily. Fit is comfortable even for longer listening sessions thanks to the ergonomic shell shape.
Sound-wise, the dynamic driver delivers a full, balanced signature — punchy bass without being overdone, clear mids, and decent treble extension without harshness. The inline mic is a nice bonus for calls.
For the price after the discount, this is excellent value. Packaging was neat and delivery was quick. Would recommend to anyone looking for 'id entry-level IEM upgrade
Cristal clear sound quality.
"Unbeatable planar clarity, smooth treble, and deeply immersive soundstage at this price point!"
I recently purchased the Letshuoer S12 Ultra from The Audio Store, and pairing it with my Samsung S24 Ultra, FIIO BTR17 (via 4.4mm Balanced), and Apple Music Hi-Res Lossless has been nothing short of extraordinary. It delivers a truly world-class listening experience!
Key Highlights:
Planar Technicalities & Imaging: The 14.8mm Planar driver offers lightning-fast transients, laser-sharp instrument separation, and a surprisingly wide, holographic soundstage.
Smooth & Energetic Tuning: Compared to earlier S12 iterations, the Ultra brings a much smoother upper-mid/treble presentation with zero sibilance, while retaining authoritative, deep sub-bass rumble.
Synergy with BTR17: The dual ES9069Q DAC and clean THX amplification from the FIIO BTR17 give the S12 Ultra all the juice it needs to shine.
Build & Accessories: Excellent CNC aluminum shells, ultra-comfortable ergonomics, and a modular 3.5mm/4.4mm silver-plated cable right out of the box.
Verdict:
If you want an endgame-level portable audio setup without breaking the bank, look no further. Kudos to The Audio Store for the lightning-fast delivery and top-notch packaging! 🎧 absolute recommended!
The DAC works like a charm. Works with various devices. Recommended even if it does not come with PEQ. Try Equalizers of your choice to tune the sound as per your taste. I have paired it Duonic (improved bass version)
Just received my order and these little thing is fabulous. Like it just increased my iems potential. Solid quality and looks premium. Easy to carry comes with a fabulous quality case which you can use to store your iems too. Moreover there was really a difference without it and with it in sound and overall. So go for it without any hesitation ✌️
The audio quality is amazing. The noise barely escapes to outside. Overall a great purchase worth the price
I was impressed by fast and well managed delivery 📦 . Coming to moondrop space travel 2 ultra..one word awesome..I was searching for tws loud enough and quality sound and I am fully amazed by sound.
Very best audio quality each and every vocal was crisp and clear in future I will buy more Iem from audio store❤️
After using the Roseselsa Aurora, I can confidently say it's one of the best budget IEMs I've tried. The tuning is fun, vocals are detailed, the bass has good impact, and instrument separation is impressive. It's comfortable, well-built, and makes every song enjoyable. Definitely worth buying if you're looking for a quality IEM. 🎧⭐⭐⭐⭐⭐
Nice dac
I've purchased this kz edx pro 2 with mic and type c I've received in just 2 days and the product is absolute perfect and build quality and audio experience is so good I've loved it and the look also is so good, the quality of mic is good though compare to other mics audio is perfect and smooth for me.
I opened it fastly then at the end i saw take a video while opening sorry audio store. But tbh the wire quality is so good and delivery also came before expected date. If someone reading this comment the 1 reason to buy from audio store is they keep affrodable prices when compared to headphonezone and concept kart and offcourse amazon and the quality is also on top notch
