LETSHUOER D02: Precise, Clear and Clean Sounding One
This is my latest product review from LETSHUOER, and some of you are quite familiar with this audio brand as they are one of the few that truly a standout among the audio companies that can truly stand shoulder to shoulder with other prominent audio brands in the market. They offer a wide variety of products in different price segments from entry-levels up to the flagship-levels.
What I have here right now is their latest entry-level set, the LETSHUOER D02, a single dynamic driver which is somewhat a cheaper option of their recently released, DX1. But the difference between this model and its more expensive sibling is the materials and its overall build design, in which the former has composite materials on its shell chassis and a different dynamic technology, but like all LETSHUOER sets, it is loaded with a quantifying amount of accessories.
The D02 features a proprietary 11 mm dynamic driver in a dual-chambered structure with a magnetic circuitry that makes it more power efficient and also capable of delivering a deep bass, clean and detailed midrange and clear and detailed highs.
The driver was then encapsulated in a compact rounded shell chassis made of a composite material structure. The cavity case is made of polycarbonate plastic with a bit long nozzle made of aluminium alloy and also it has three vent holes with it, two is situated at the side area near the connector port, and the other is located on the off-centre. On the faceplate section, there's a gemstone cut-like wheel pattern design with silvery colour with a pink berry colourway on its outer rim, but you can choose another colour option which is an aquamarine colour, and also there's another small vent hole at the side within border between wheel pattern and outer rim that is well-hidden unless you do some thorough inspection of its overall design. Like all the current LETSHUOER models, it still utilises a proven 0.78mm bi-pin connector as its interlocking mechanism for its detachable driver.
About its stock cable, it is rather decent given the asking price of this set that it was constructed in a parallel manner which is quite lean but still flexible enough. The cable is made of a multi-strands of oxygen-free silver-plated copper wiring sheathed with PVC insulator for a seamless lossless audio signal transmission without any distortion or microphonic effects. Aside from its gold-plated 3.5mm single-ended plug, you can choose a type-C variant which has built-in DAC chip provided by KT that can decode high resolution audio quality up to 32bit/384kHz along with MEMS HD microphone for a crystal clear voice quality use for calls and gaming.
The design of the shell chassis itself is pretty ergonomic that almost all types of ear sizes will have an excellent fitting and comfort due to its lightweight with no discomfort issue due to some build-up pressure inside into our lugholes. With its secure fitting, it offers an excellent passive noise isolation as it was able to block unwanted noises from the outside.
On its product packaging, while it has a minimalist presentation, its small cardboard box contains a quantitative amount of inclusions inside.
These are the following included contents inside of its packaging box:
- Pair of LETSHUOER D02 transducer ear pieces.
- Stock cable
- TPE IEM storage case.
- Circular ear tip plate organiser.
- Three (3) pairs of balanced bore silicone ear tips in different standard sizes.
- Three (3) pairs of wide bore silicone ear tips in different standard sizes.
- Paperwork like user's manual, warrant pamphlet and Q.C. stub.
About its drivability, with an impedance of 26 ohms and a sensitivity rating of 108dB, this one is fairly sensitive that it can be driven by a device with a standard gain mode output. With an optimal amplification from source along with its power efficient transducer, it will deliver a dynamic and a full range sound.
When it comes to its tonal profile, The D02 has a balanced-neutral sound profile with a bit more prominent high frequencies that makes them closer to a neutral-bright sound signature (wide bore ear tips).
LOWS/BASS:
This one has a well-balanced bass response as it has good sub bass presence and a sufficient mid bass texture. The infrasound rumble and vibration that were produced by instruments such as drum machine, synthesisers and strings can be clearly felt its reverberating presence, while its ample mid bass texture is adequate to deliver a proportional note weight on bass-clef instruments and low octave male vocals as it gives a enough punchiness, precise and incisive bass response with maintaining a clean and well-segregated that doesn’t smudges across the lower midrange section.
On how some instruments and vocals like on this set, bass guitars sound rasping and sustaining with a bit less weight on it, while the double-basses have a tad resonant and menacing sound and then bass kick drums have sonorous yet soft sounding. As for the male vocals, both bass and bass-baritones while they have that deep resonating sound but I also noticed that it has a lack of dark timbre and vocal weight that make them sound less dense and woolly.
As I previously mentioned on my initial impressions on this set that its bass quality will be unlikely favourable towards bass heads due its lack of authority and slam tuning that makes them tonally desirable for them.
MIDRANGE:
The midrange of this one is quite neutral with a more balanced texture as it has an ample warmth with an energetic presence especially of the upper mid section. And this particular frequency part is probably its strongest asset of this set on how it renders some vocals and instrument in clean and clear sound with almost natural and uncoloured timbre, but it's not all rainbows and sunshines as some of them might sound too forward and intense to some listener who are quite sensitive on those peaky presentation.
With an enough warmth for vocal density on male vocals, it has smooth and somewhat a bit steely sound on baritones, a clear and spicy sound on tenors and then, an emotional and tender sound from the falsettos of the countertenors. As for female vocals, contraltos have smoky sound from their chesty vocals although it is somewhat lack of depth and heft on it, while the mezzo-sopranos have more coppery and fiery sound, and sopranos have a shimmering and bell-like sound but it has a hint of metallic sound.
On the instrument section, with this type of tuning, the strings and woodwinds will certainly thrived on this tonal aspect as the guitars, both rhythm and acoustic ones, will have crisp, bright and sustaining, violins will have a vibrant and brilliant sound, cellos have a sweet and lively sound, concert flutes sound bright and graceful, piccolos seems to have a clear and delicate sound with a bit of penetrating tone, clarinets have brilliant and menacing sound, and lastly, the saxophones have a pale and reedy sound. The brasses like the trumpets, trombones and horns, they sound brilliant, full and rounded with a hint of metallic tone on them, while the percussives, snares have that sharp and precise sound, tom-toms have that incisive and resonant sound, field drums have a sonorous sound and kettledrums sound a bit dry and resonant. Pianos seems to have that clear, sweet and rich sound.
HIGHS/TREBLE:
The treble quality of this one tends to be on a bit brighter side of tuning, as it has an ample vividness, shimmer and lustre response due those perceived elevation peaks from upper-mids with gradual decline slope through the presence section on the high frequency region. The accentuated section will highlight the clarity and definition on the vocal articulation and a fairly sharp attack on the instruments. While I don't hear that harshness nor sibilance on this one, it has a that a tad tinny and piercing sound that treble-sensitives should take caution on this one.
On its brilliance section, it has a pretty modest airy extension with sufficient sparkle on some treble-clef instruments like the cymbals have a lustrous and shimmer sound, and the hi-hats have a resonant and hollow sound.
SOUNDSTAGE, IMAGING & OTHER TECHNICALITIES:
For its overall technical performance, it appears that D02 has a perceivable moderately roomy head stage on its sound field as it has ample wideness on its lateral span, good height ceiling and an immersive depth in a concave-like stereo presentation on its imaging aspect. Within its hemispherical stereo presentation, it has a fairly layered soundscape with a good separation of musical elements in which I can pinpoint their cues within its spatial sonics that even playing some complex multi-instrumental tracks, this set can handle them.
As for its driver coherency, this proprietary dynamic can deliver that well-responsive and fast transient on its bass response with a clarity and sufficient detail on the rest of the frequency response while maintaining that natural sound quality. On its resolution capabilities, it has a firm macro-dynamics as it was able to highlight the varying degree on dynamic ranges between the chorale lines and instrumental passage from the quietest up to the loudness level, while it has reasonably sharp definition on its micro-dynamics as it was capable to extract details, nuances and grains from an audio track like vocal ends, notational textures and instrumental reverb tails.
PEER COMPARISONS:
TANCHJIM BUNNY
- One of the entry-level offerings from TANCHJIM, and it also has a single driver set-up.
- Like the D02, it also has a proprietary dynamic driver with a composite diaphragm inside and it was housed in a teardrop-shaped composite shell chassis.
- Its product packaging is also packed with a quantifying amount of accessories inside but it doesn't have a hard storage case but rather a felt cloth pouch.
- This one has a mild U-shaped sound signature as it has punchy yet clean bass response, a balanced and tidy midrange presentation with a hint of warmth for smooth and clear vocals and organic sounding instruments, and smooth and even treble response with a modest air.
- On its technical capabilities, it has fairly average sound/speaker stage size, linear two-dimensional stereo imaging and a fairly detailed resolution capabilities.
ROSESELSA QUIET SEA II
- The recently released entry-level model from ROSESELSA and it also has single driver configuration.
- It has a dynamic driver with a composite diaphragm made of carbon copper and PEEK materials, and it was also encapsulated in a composite shell chassis consisting of polycarbonate plastic and aluminium alloy.
- This one is also well-packed with accessories on its product packaging, while it doesn't have any storage case but it has a standee and its stock cable has a modular termination plug feature.
- It has a U-shaped sound signature with a warmish-balanced tonality that make this set quite a coloured sounding one, as it has a punchy and impactful bass response with a slight mid bass bleeding, a recessed but it has a warm and plush midrange presentation for a smooth and rich sound on male vocals and a realistic tone on brasses and percussive instruments, and a smooth and lustrous treble response with a rather reserve brilliance air.
- As for its overall technicalities, it has a fairly average soundstage size, a standard two-dimensional stereo imaging and a solid macro-dynamics.
TANGZU WAN'ER S.G. STUDIO EDITION
- Another variant of TANGZU's finest entry-level set and it has a single driver configuration.
- It uses a 10mm PET dynamic driver and it was encapsulated in a polycarbonate plastic shell chassis with a QDC-type 2-pin connector as its interlocking mechanism for its detachable cable.
- Compared to the D02, this one has only a modest amount of accessories that simply handle the basics with no storage case at all.
- This one has a pretty neutral sound profile that is quite almost similar with the D02's sound signature but this one is tends to be more a neutral-bright sound signature as it has tighter and incisive bass response, a neutral yet with ample midrange quality and a bright and clear treble response with good amount of air.
- Technicality-wise, it has an eerily similarity with D02'Ss overall technical performance as it also has a fairly roomy soundstage with a concave-like stereo imaging presentation and pretty detailed resolution capabilities.
To conclude this product assessment, this earphone is indeed a good set and with its affordable price, this one is quite enticing for budding audio enthusiasts who are looking for neutral-sounding IEM. It has a very ergonomic design shell that will firmly fit into our ears, a mature tonal profile that is quite enjoyable with its clear, crisp and detailed sound quality. For sure that it has its drawbacks like it doesn't have an authoritative bass response that bass heads will enjoy and a bit too forward and intense upper midrange up to presence section that might be bothersome to some treble-sensitive folks which have some aversion towards “hot” and a bit piercing tuning, but if you are a type of listener who enjoy bright and shimmering operatic vocals, classical and country music, this one is indeed excellent on those specific genres.
The LETSHUOER D02 is now available on LETSHUOER's official online store. Check out the link that I have provided below if you are interested in this product.
LINK:
https://letshuoer.net/products/letshuoer-d02
SPECIFICATION:
MODEL: LETSHUOER D02
IMPEDANCE: 26Ω
SENSITIVITY: 108dB
FREQUENCY RESPONSE: 20Hz – 40KHz
CABLE LENGTH: 1.2m
PIN TYPE: 0.78 2-PIN CONNECTOR
PLUG TYPE: 3.5mm, USB TYPE-C
DRIVER UNIT(S): (1) DYNAMIC DRIVER
MICROPHONE SUPPORT: YES (TYPE-C)
PROS:
● Lightweight and solidly built composite shell chassis.
● Quite affordable pricing for budget-minded audio enthusiasts.
● Two colour options to choose from. (Berry Pink and Aqua)
● Pretty power efficient as it is easy to drive.
● Its compact size offers a firm and secure fitting for a better passive noise isolation.
● Among its inclusions, It includes two types of silicone ear tips and a solid TPE storage case.
● A neutral sound profile which is quite uncommon tuning within this price range segment.
● Punchy, precise and clean bass response.
● Balanced, energetic and clear midrange.
● Excellent on vocal tracking especially on female vocals and also on instruments particularly on strings and woodwinds.
● Bright, clear and expressive sounding on tenor mezzo-soprano and soprano vocals
● It somehow depicts realistic sounds from guitars, violins, piccolos and flutes.
● Bright and glossy treble response.
● It has very competent technical capabilities for a single DD IEM in this price range.
CONS:
● Definitely not for bassheads due to its lack of impactful and authoritative bass response.
● Not for listeners who are looking for a fun and coloured sound profile with a warm analogue-ish tonality.
● Wishing for a more sub bass presence. (if I want to nitpick)
● Instances of some tinny and piercing sound.
● A bit more treble air could be better.
TRACKS TESTED: ( * = 16-bit FLAC, ** = 24-bit FLAC, *'* = MQA, '*' = DSD, *'= .WAV)
Alison Krauss -When You Say Nothing At All *
Jade Wiedlin - Blue Kiss**
Led Zeppelin - When The Levee Breaks **
Mountain - Mississippi Queen *
Queen - Killer Queen **
Guns N' Roses - Patience *'*
Eric Clapton - Tears in Heaven '*'
Sergio Mendes- Never Gonna Let You Go '*'
Pearl Jam - Daughter **
Roselia - Hidamari Rhodonite *
Assassin - Fight (To Stop The Tyranny)*
Celtic Frost- Visual Aggression *
New Order - Blue Monday *
The Corrs- What Can I do (unplugged version) *
Jimi Hendrix Experience - Voodoo Child *
The Madness- Buggy Trousers *
Metallica - Motorbreath **
Mariah Carey- Always Be My Baby *
Destiny's Child - Say My Name *
Malice Mizer- Au Revoir *
Mozart - Lacrimosa *
New York Philharmonic Orchestra - Dvorak- Symphony 9 " From the New World." *
Eva Cassidy - Fields of Gold (Sting cover)*
Michael Jackson - Give In To Me *
Exciter - Violence and Force *
Diana Krall - Stop This World **
Debbie Gibson - Foolish Beat *'*
The Sisters of Mercy – Lucretia My Reflection**
Suzanne Vega – Luka **
Lauren Christy – Steep *
Ottoman Mehter - Hucum Marsi *
Diana Damrau - Mozart: Die Zauberflöte*
Type O Negative - Black No.1 *
Felix Ayo - Vivaldi: Presto **
Three Tenors - Nessum Dorma *
Mercyful Fate - Witches' Dance *
P.S.
I am not affiliated to LETSHUOER nor receive monetary incentives and financial gains as they provide me a review unit for an exchange of factual and sincere feedback from yours truly.
Once again, I would like to send my gratitude to Ms. LETTY of LETSHUOER for providing this review unit. I truly appreciate her generosity and trust towards me and other reviewers.
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