Letshuoer has made a name for itself in the high-end audio community. The company was created by Danny To and Jeff Wong. Their combined expertise bridged both technical innovation and product design. Danny To draws upon his engineering knowledge, shaped by years as a senior engineer at Panasonic and leadership roles across the tech sector. With the conviction that lasting success in audio comes only from exceeding expectations, in terms of both sound quality and customer trust.
Jeff Wong brings a clear design vision to Letshuoer. With a background in major companies and a strong passion for hi-fi, he aims to make products that not only look unique but also feel comfortable during hours of listening.
Every new release, Letshuoer reflects its commitment to innovation and quality. In recent years their products have built a reputation among audiophiles worldwide for blending solid engineering with a distinctive design touch, showing the brand’s drive to set new standards in premium in-ear audio.
In this review we take a closer look at the Mystic 8, an in‑ear monitor that impresses with both its refined sound quality and its beautiful black finished design.
Design
The Letshuoer Mystic 8 immediately stands out with its artistic ‘Phantom Cat’ motif on the faceplate, complete with a sparkling gem as the cat’s eye. Made from CNC‑machined titanium and finished in vapor black, the shells feel solid and durable while keeping a clean, modern look.
The Mystic 8 is surprisingly light and exceptionally comfortable for extended wear time, due to its smooth ergonomics and well-contoured shape. The (lightweight) titanium housing will nestle comfortably in most ears, providing a secure fit.
The balanced distribution of weight and the lack of pressure points make long listening sessions a true pleasure. The slim, well‑constructed high‑quality cable further enhances that experience.
A variety of ear tips in different sizes and materials are included, making it easy to find a snug and secure fit. I do miss foam tips, something like the Comply Comfort Plus, more on that later in the review.
Specs
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8 balanced armature drivers per side (4 Knowles + 4 Sonion)
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A three-way electronic crossover and four sound bores for precise frequency separation
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Frequency range: 20Hz – 40kHz
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Sensitivity: 107 dB
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Impedance: 18Ω
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Full titanium shells, 2-pin (0.78mm) connectors
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1.25m 8-core silver-plated copper cable, terminated with 4.4mm plug
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Comes with a luxury protective carrying case
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A necklace and a ‘cat ring’ accessory
Test equipment:
– Chord Mojo2+Poly
– The ‘new’ Luxsin X9
– Shanling M8T
Sound Quality
The Mystic 8 impresses with a honest and neutral sound signature. Music is presented with minimal coloration, focusing on total clarity and realism. A rare quality with so many IEM’s focussing on the low-end and bass these days. They are made for the purists among us.
Don’t get me wrong, there is bass, but it stays clean and composed. It never overpoweres but is always present. That way supporting the rest of the frequency spectrum rather than taking center stage.
The real highlight are the mids. Voices and instruments come through with remarkable naturalness, layering and emotion. The Mystic 8 is one of the airiest and most transparent in‑ear monitors I’ve heard in years, nothing less then ‘A’mazing, yes with a Capital A! Very impressive.
Referring back to my earlier comment about the included ear tips: while they are already very good, there were a few occasions the treble could get hot at times.
Switching to my favorite foam tips, the ‘Comply Comfort Plus’, that was solved. They lifted the Mystic 8 to a whole new level. The tighter seal cut down on sound leakage and outside noise, giving the earphones a fuller and more controlled low end. At the same time, the foam slightly softening the treble in a very pleasant way. Those foam tips aren’t expensive, but it would have been nice if similar kinds were available in the package.
Treble
The highs are crisp and airy with good detail but never sound harsh or sibilant. There’s enough sparkle to bring out micro-details, but not too much to cause listening fatigue, making these IEMs a great choice for long sessions. The treble’s technical performance allows the soundstage to feel open and well-layered. They strike an impressive balance between airiness and precision. Micro‑details are presented effortlessly and with clarity.
What stands out most is how the Mystic 8 maintains this resolution while keeping the treble smooth and controlled, avoiding any unwanted harshness. The result is a presentation that feels spacious, detailed and highly engaging. Getting this right is not easy!
Midrange
This is where the Mystic 8 truly excels. Vocals sound intimate and textured, while strings, brass and other instruments are rendered with incredible realism. The clarity and separation in the midband make complex classical or jazz arrangements easy and enjoyable to listen to. There is excellent separation and depth.
Vocals are rendered with a natural warmth and intimacy, allowing both male and female voices to sound lifelike and emotionally engaging. Instruments such as guitars, pianos and strings, carry a rich timbre with excellent texture and layering, making complex arrangements sound exceptional.
There is a fine balance between smoothness and clarity, the Mystic 8 avoids any midrange congestion while still delivering enough body to keep the presentation full and organic. This results in a midrange that feels both accurate and inviting, perfectly complementing the airy treble and controlled low end.
Bass
The bass of the Mystic 8 is tight, controlled and exceptionally well‑defined. Rather than overwhelming the presentation, it delivers a precise and articulate foundation that supports the mids and treble beautifully. Sub‑bass reaches deep* with a satisfying rumble when called for, while mid‑bass stays clean and never bleeds into the midrange. *accurate and neutral.
What stands out is the speed and texture of the low end. Notes hit with authority, then decay fast but in a natural way, allowing complex bass lines to remain distinct and detailed.
This is not the domain of bassheads seeking thunderous impact, but for listeners who value accuracy, nuance and balance, the Mystic 8’s low end is very rewarding and refined.
Soundstage
The soundstage of the Mystic 8 is expansive and immersive, offering a sense of space that feels more like a live performance than a typical in‑ear monitor. Instruments are placed with pinpoint precision, creating a holographic image where every element has its own defined position.
Width extends generously left to right, while depth adds a convincing three‑dimensionality. That quality draws the listener into the music, which is amazing, because that is without the use of ‘crossfeed’!
Layering is handled with remarkable finesse, dense arrangements remain uncluttered and subtle background details are heared with ease. The result is a presentation that feels open, airy and natural.
The qualities an performance of the Mystic 8 are very impressive.
Listening impressions
When it comes to evaluating high-end IEM’s, you want to know how well it reveals nuances, spatial depth and tonal balance across a wide range of music.
I selected this particular set of tracks to explore everything from microdetail and imaging to rhythm and texture, each revealing a different facet of the Letshuoer Mystic 8.
Concha Buika – El último: Somos
Concha Buika’s voice emerged with raw texture, emotional depth and powerful at once. The neutrality of the tuning lets every nuance shine. The Mystic 8 captured the subtle cracks, breaths and the emotional weight in her delivery.
The acoustic guitar and percussion framed her vocals with lifelike presence, each note distinct but never overpowering. This combination of raw vocal detail and natural instrumental layering highlighted the emotional intensity of this track, making it a truly captivating listen with the Mystic 8.
Marcio Faraco – Um Rio: Adrenalina
Listening through the Mystic 8, the delicate guitar strings resonated with clarity, every pluck distinct and natural, revealing subtle textures that are often lost on lesser IEM’s.
The balanced mids gave the acoustic instruments warmth and realism, allowing the guitars, percussion and gentle background elements to blend seamlessly. This while still retaining their individual character.
The wide stage added an open and airy quality to the performance.
Mario Bauzá – My Time Is Now: El Manisero
The rhythm section flowed with tight precision, the basslines, lively but never overbearing. Trumpets were very well-defined and clear, percussion sparkled and each instrument occupied its own space. The complex afro‑cuban layering sounded effortless, joyful and full of energy. A wonderful piece that really shines when an IEM, like the Mystic 8 reveals so much depth and detail.
Enya – The Memory of Trees: Anywhere
Here Enya’s voice floated ethereally, layered across a vast three‑dimensional stage which the mystic 8 rendered with remarkable precision. Her vocals carried a soft glow, standing perfectly balanced against the lush instrumental backdrop. The subtle layers of synths and reverb were revealed perfectly . It gave the track an airy openness, while the mids preserved the warmth and intimacy of her tone. The Mystic 8 makes this genre of music a real treat, with a stage that feels so huge and immersive.
Andrea bocelli – Verdi: Un Ballo in Maschera, Atto I: di’ tu se fedele
Andrea Bocelli’s tenor carried with warmth and power, soaring naturally above the orchestra. The Mystic 8 captured the rich timbre and expressive dynamics of his voice, from the tender, softer passages to the full, commanding peaks.
The orchestral backdrop was rendered with extreme precision, every section clearly defined: strings flowing with cohesion, brass cutting through with clarity and the percussion grounding the performance without ever overshadowing the vocals.
The neutrality of the tuning preserved the grandeur and scale of Verdi’s composition, ensuring that nothing sounded exaggerated or forced. The result was a faithful and deeply moving reproduction of the aria, bringing the listener closer to the emotional core of the performance as if seated in the opera house itself.
