Rose Technics QT-X

Sonic Sleuth

100+ Head-Fier
Review of Rose Technics QT-X
Pros: Clarity and balanced sound profile
Durable, premium materials and ergonomic design
Comprehensive package with RZ-500 dongle DAC, various ear tips and carrying case.
Excellent noise isolation and high sensitivity
Cons: Expensive compared to other IEMs
Limited availability in some regions
Bass may be insufficient for bass enthusiasts
Possible initial discomfort requiring a break-in period
I would like to thank @gadgetgod and ConceptKart for sending this unit as part of the review tour.

You can purchase it from ConceptKart at the following link (not an affiliate link):

Also, I’m not a seasoned reviewer or a seasoned audiophile, so whatever I say is purely my observations and your results may vary.

I’m not the one to usually focus on specifications and numbers. I focus more on how happy I am with the equipment’s sound and that’s it.

Box Contents:

  • 1x QT-X In-Ear Monitors
  • 1x Blue Rose Detachable Cable
  • 1x RZ-500 USB DAC/Amp
  • 1x USB-C to USB-C Cable
  • 4x Pair Eartips
  • 4x Pair Filters
  • 1x Earphone Case
  • 1x User Manual

Sources used:

  • Rose Technics RZ-500 (ESS 9038)
  • Dita Navigator
  • D16 Taipan
  • Qudelix T-71

Welcome to my review of the Rose Technics QTX, the flagship model from Rose Technics, a company established in 2015. Known for its innovative use of novel technologies such as ESTs and bone conduction, Rose Technics aims to create timeless audio products that avoid rapid obsolescence. The QTX epitomizes this effort, designed with care and precision by acoustic engineer Mr. Zeru, formerly of Fostex.
The QTX sports a sleek and sophisticated design, available in several finishes, including the standout Obsidian Black. Its impressive build quality offers a sturdy yet comfortable fit with a normalized shell that ensures prolonged wear without fatigue. The inclusion of a RZ-500 Dongle DAC, a high-quality carrying case and a selection of tips adds to its premium feel. However, the included cable, though functional, could be improved given the price point of $399.

IMG_3195 Copy.jpg



The QTX offers a balanced and refined sound profile, with each frequency range meticulously tuned for optimal performance.

The bass on the QTX is clean, detailed, and quick. It features a 10 mm dynamic driver that provides a lush and engaging bass response. Compared to competitors like the Okavango, the QTX's bass is slightly less pronounced in the mid-bass region, but still delivers a satisfying punch without overwhelming other frequencies.

Mid Range:
The midrange performance of the QTX is outstanding, providing clear and detailed vocals and instruments. The mids are well-balanced and do not get overshadowed by the bass or treble. Compared to similar models, the QTX offers a slightly more open and effortless midrange, making it an excellent choice for vocal-centric tracks.

The treble on the QTX is smooth and non-fatiguing. While it may not be as sparkling or detailed, it avoids harshness and sibilance, providing a pleasant listening experience. The treble is well-integrated with the other frequencies, ensuring a cohesive overall sound.

The Rose Technics QTX is a well-designed and decently performing IEM that excels in delivering a balanced and detailed sound across all frequencies. Its design and build quality are top-notch, though the included cable could be improved. With a sound profile that is both engaging and refined, the QTX competes well with other high-end IEMs in its price range. For fans of Rose Technics and those looking for a reliable and well-rounded audio experience, the QTX is a solid option worth considering.
MD Rohit


Headphoneus Supremus
Rose Technics QT-X: A Hidden Gem
Pros: Weighty mid-centric tuning
Voluminous sub bass
Easy to power and reach full potential
Smaller size for the amount of drivers utilized
True 'all-rounder'; from price to packaging to sound
Cons: While it has good treble extension, it lacks weight in higher frequency range
Mid-bass lacks punch and slam
Long nozzles caused fit issues - a con for me, not necessarily for everyone
Confusing branding/Value vs Deluxe


The Rose Technics QT-X is a hybrid IEM, consisting of 1 x 10mm Tesla Coil DD and 6 BAs - 2 low/2 mid/2 high configuration. Tuning is vocals and mids focused, with a large sub bass boost and some treble extension that pushes the set into bright territory.

1DD + 6BA Hybrid Design In-Ear Monitors
  • Impedance: 18ohm
  • Sensitivity: 108dB
  • Frequency Response: 20Hz-20kHz
  • Connection: 2-pin/0.78
  • Termination: 3.5mm or 4.4mm

About me -​

I am a mid 30’s dad, and work full time in IT. Music has been important to me from a young age, consuming as many different types of albums and genres as I could. That is still true today, though my everyday playlists lean most in pop, bass heavy electronic music, metal, and classic rock. I have a treble sensitivity due to years of negligent concert hearing protection (both on and off stage), so my preferred sound signature is warm and bassy. This is just a hobby for me, I’m not a graph nerd and I will always state how and where I got my gear.

I received the “Value Edition” for this review, I would like to thank Andrew and the team at Bloom Audio for giving me an opportunity to review this IEM. I was provided a small discount for my honest impressions, I get no monetary compensation or affiliation links.
Gear used for this review -
  • RZ-300m dongle (included)
  • DC-Elite
  • Qudelix 5k
  • Hiby R4
  • Apple USB-C dongle
  • Stock cable (tested various others)
  • Divinus Velvet / Eletech Baroque tips

Packaging + Accessories -​


Value edition box
  • QT-X IEMs (Obsidian Black)
  • Grey Rose Cable
  • RZ-300m Adapter
  • Foam eartips x 3 pairs
  • Silicone eartips x 4 pairs
  • Carrying case
  • Vent cover x8

The QT-X packaging is tasteful and well-accessorized. From the logo in holographic gold on the slip cover, to the quotes and images attached on the inside, you can sense from the get-go you are in for a high quality experience just opening the box. The included accessories are generous. The foam eartips were far too small to be of use to me, but I found the silicone ones to be quite nice. They don’t work for me with this IEM (more on that later), but they are like a generic Eletech Baroque in both size and shape and come with an XL! Very nice.

The included carrying case is too small on the inside to be of any serious use, but would be suitable for just the IEM and your choice of dongle. I have yet to have a need for the vent covers, but I do also want to give a special shout out to the included cable. The Grey Rose cable is 4 strands of fabric, but it is not microphonic in use. During my review, I also did not find it to hinder the sound at all like some cables in this IEM price range can. It does not feel like an afterthought, even though its appearance is quite simple. Like the eartips, the Grey Rose also will stick around in my collection for future use. If you have used the QuietSea before, it is the same cable, which I thought was already a ridiculous value for a $50 IEM.

RZ-300m Amp/DAC dongle -​

I want to keep this somewhat brief since it can be purchased separate, but special mention must be made to this included dongle. It packs quite a punch! Even though it’s only 3.5mm, I found this $30-ish dollar USB-C dongle to be quite capable in driving all but my Szalayi properly in my IEM collection. On the QT-X, the volume never went above 50%. It leans warm in the sound signature, which is a good pairing with the brighter edge in tonality. The build is mostly plastic, but the cable is a nice weaving. The button only pauses/starts the music as far as I can tell. The RZ-300m can be purchased on the Rose Technics site, or Aliexpress.
  • CS4398 DAC
  • Dimensions: 146mmx21mmx10mm
  • Weight: Approximately 13g
  • Output Power: 75mW@162
  • THD+N: -99dB(@32Ω)
  • Frequency Response: 20Hz-50kHz (-0.5dB)
  • Signal-to-Noise Ratio: 110dB(@32Ω)
  • Channel Separation: 76dB@32Ω

Aesthetics, Build Quality & Fit -​

The QT-X comes in a variety of colorful flavors, my review copy is the Obsidian Black color. With gunmetal on the faceplate, the body consists of a high grade opaque black resin. At first I mistook the build quality for metal; it feels far more substantial than most other resin IEMs I have tried. It isn’t filled with resin, but it’s very thick and feels durable.

The IEMs themselves are quite small, for some reason the pictures online make it look like a larger IEM than it is. The nozzle is a bit long, and unfortunately I have some fitment issues with long nozzles and the QT-X was no exception. I was able to mitigate this with tip rolling, and settled on the Velvets and Baroque depending on mood.

On the top next to the 2-pin port is a large vent. I noticed no pressure build up, and they isolate outside noise well once you get a good seal. Overall, the aesthetics and build quality are top notch and only the fit gave me issues, though I will admit that is more my issue than the QT-X. The quality matches the price!


Test Tracks -​

  • The Japanese House - Sunshine Baby (vocals/mids + sibilance)
  • Fleetwood Mac - The Chain (techs + vocals)
  • EPROM - Pineapple (Bass + treble)
  • Empress Of - For Your Consideration (bass + techs)
  • Joe Hisaishi - Merry-Go-Round of Life (treble)

Bass -​

The bass on the QT-X is simultaneously my favorite part, and the one place that leaves me wanting. Sub vs mid bass. The sub bass is tastefully done, in both quantity and quality. 808 hits are smooth and satisfying, the atmosphere brought by the sub bass always impresses me on drone or ambient tracks.

Mid bass, on the other hand, is largely lifeless. Basslines and kick drums simply exist within the mix if there are other things going on. I am left wishing there was more weight in the mid/higher bass. However, I do not want to be too negative about the bass, because I believe the good outweighs the bad here. My library has a lot of sub bass focused tracks, and the sub bass here is GOOD. It’s well-controlled, accurate and plentiful.

Some examples; on For Your Consideration, at :24 seconds there begins a series of kick drums before an overwhelming amount of sub bass presence shortly after. On Pineapple, there are a variety of mid bass hits throughout but only the sub stands out in the mix and it pulses and booms along.

Mids & Vocals -​

Lush and full, the only way it could be made better was with some more supportive mid bass. Otherwise, hands down this is where the majority of tuning went. Vocals sound rich, female vocals especially but male vocals aren’t far behind. In Sunshine Baby at 1:56, male vocals enter behind a female track before they trade off for a moment and you can get a sense of how they are tuned in the mix.

The dueling guitars at the beginning of The Chain display how weighty the mids can get, building into the vocals where Stevie Nicks cannot help but appear just a bit more than she should. Here you can also sense where the mid bass falls short, as the kick drum keeps the song moving along, but unfortunately not as present as it should be.

Treble -​

The high range of the QT-X is well done, it has nice extension while being on the winning side of “too bright”. Sibilance is minimal and only an issue with an improper tip seal, or is part of the recording. Sunshine Baby is a sibilance monster, and the QT-X handles it with ease, only revealing the most egregious, unavoidable sibilance.

My only issue with the treble is similar to that of my opinions on the bass - it lacks some weight. For my tastes, this really isn’t an issue but there isn’t a lot of oomph to the sharper punches. On Merry-Go-Round of life at 1:50 when the strings kick in, it sounds nice and shiny but it's lacking note weight and air to really give it an extra shine. In Pineapple, there are some discordant treble hits on the hi hat, and it would be more pleasant with that air.

Technicalities -​

Soundstage is quite good, though I was never wowed by it. On tracks like For Your Consideration, harmonizing vocals come in around you and they reach far enough that I have no complaints. On The Chain, you can hear the fingers guitar plucking quite clearly, as well as the muttering so the details are clear, but the full band coming in reveals the soundstage to be a little on the shallow end. All parts of the mix can be distinguished clearly, if properly focused on. Solid techs all around to my ears.

Power + sources -​

I had zero issues driving the QT-X on any source I have. It usually lies at the lowest volume/gain setting in my collection, so I guess one downside is that I forget to turn it down before using it but that is on me!

It is not particularly source picky either. As I mentioned at the beginning of this review, the included 30 dollar amp/dac is more than sufficient to power it, and honestly it sounds great out of the box. It scales nicely as you throw more at it, but I don’t feel it is as necessary as some other sets to use top of the line gear to get the most out of it. Do not feel like you are missing out going unbalanced here folks.

Branding + Pricing + Value vs Deluxe -​

Now, this section is a little… different than my typical reviews, but I feel that it must be mentioned. Shortly after I got the QT-X in for review, I noticed the Rose Technic branding online had begun to change to ROSESELSA. I am not crazy about this name, it’s far less coherent but for now it seems their IEMs are keeping the Rose Technics branding. Additionally, pricing for this IEM seems like a mess and all over the place, depending on which online storefront you are looking at.

The Value edition is
Contains the RZ-300m, a 3.5mm only DAC
Grey Rose cable

The Deluxe edition is
Contains the RZ-550, a 3.5mm + 4.4mm DAC
Blue Rose cable

I cannot imagine the Deluxe version is worth it for an extra $100. If it were up to me, make Deluxe the only model at the Value edition $339 price and it’s an amazing deal in today’s market.

Closing Thoughts -​

I think the term “all-rounder” gets thrown out a bit too much and too often, I certainly know I am guilty of it. It’s an easy, catch-all term to assign something that is a little good at everything. I just cannot find a better term to use to describe the QT-X though, in every sense of the word it’s such a great all-rounder, all purpose IEM.
  • Good bass? Check.
  • Full mids and lovely vocals? Check.
  • Nice treble extension? Check.
  • Amp/DAC out of the box? Check.

If you are looking for an all-rounder, bright leaning natural sounding set with solid bass, keep your eyes peeled on the QT-X. Rose Technics/ROSESESLA could be a major player in the game with tuning like this (and some simplification in their branding…), and I hope to see where they go.
Rose Technics QT-X is available on Bloom Audio for $339:
MD Rohit
MD Rohit
The cable looks dope
MD Rohit
MD Rohit
Is that a stock cable?
Awesome write up on a great set! Totally agree, certainly a hidden gem. Rose Technics has a very strong lineup across the board, only a matter of time until the western market really catches on!


New Head-Fier
Mid-Centric Execellency! The Rose Technics QT-X
Pros: 1. Mid centric tuning
2. Smooth and clear-sounding treble
3. Lively and engaging mid-range
4. Well-controlled and clear sounding bass
5. Great technical abilities
Cons: 1. Micro details aren't very revealing
2. The dip after the 4kHz

Review Of The Rose Technics QT-X



Rose Technics is a professional brand that offers mid-range electro-acoustic items that sound well in terms of tone and technicality. The firm is based in China and mostly manufactures IEMs, although they have just expanded into the dongle DAC industry. The brand also offers flagship earbuds called Martini, which I was fortunate enough to review. I recently reviewed their affordable IEM known as QuietSea, which I enjoyed so much, and now that I have QT-X, another IEM from Rose Technics, I am certain I will not be disappointed after looking at the graph, but before I go any further, I would want to clarify a few concerns.



*This is a review unit, courtesy of Concept Kart. All thanks to them for providing. And as I've said in all of my evaluations, the same is true for this one: all of the concepts I've expressed below are entirely my own, original ideas that haven't been influenced by anyone else. If interested, go to this link.
*I am not associated with the connection, and I receive no financial assistance from anyone.
*For the remainder of the review, I will refer to these IEMs as “QTX.”
*I am using different Ear-tips for convenience and better versatility.
*Finally, I will only evaluate the QTX based on their performance, even though I will explain how it feels and seems physically and aesthetically.



QTX has a multi-hybrid driver configuration that includes a 10mm LCP diaphragm Tesla dynamic driver and six balanced armatures (dual 30018 IF, dual 30019 HF, and 33ap007 MF & LF) coupled via a four-way crossover. The shells are made of medical resin, while the faceplate is made of metal. The shells have a fairly lengthy nozzle, but with smaller eartips, I was able to get a perfect seal and comfort for extended periods of listening. The cable offered is called as Blue Rose, and it is a high-quality 5N single-crystal copper cable with proper sheathing. It feels similar to the cable offered with QuietSea, however, it is somewhat heavier and slimmer. The cable has a 4.4 straight termination plug on one end and 0.78mm 2-pin connectors on the other; honestly, the cable feels exceptional and reliable in the hand, and the colour complements the IEMs. The additional accessories include a selection of ear tips, a carrying case, and, shockingly, a Rose Technics RS200 dongle dac. According to the technical specs, the impedance is 18 Ohms and the sensitivity is 108dB. The frequency response ranges from 20Hz to 20kHz.


QT-X offers a mid-centric and neutral tone, with a focus on the sub-bass and an overall clean sound. When I first started listening to them, I noticed that whichever source I used changed the quality of the sound without affecting the tuning, which made me understand how versatile they are in terms of technical aspects. The sound is characterized by its cleanliness and transparency, with a particular emphasis in the midrange that gives the vocals and instruments a spacious and well-defined presence. While the graph may indicate that the treble lacks energy and the bass is lean, the tuning of this IEM actually allows the treble to sound expansive and smooth without being dark, and the bass to provide good depth and presence. However, there is a slight lack of warmth and note weight in the mid-bass region that is noticeable throughout the sound signature. Finally, I feel the response has been properly calibrated to sound neutral and accurate, particularly in the midrange, rather than offensive or bright. Let's go further into sound and learn more about it.



The treble region differs from what the typical graph portrays; the treble is more smoother and cleaner, with a strong presence in an overall presentation. Though I do discover the limit, when listening to the voices, I notice that minute details that are readily brought up beyond the 4kHz range are muffled, despite the fact that the response sounds engaging and airy. The upper treble sounds expansive and airy, satisfying a listener with the quality of the vocals and instruments; the response is vibrant and engaging, as it reveals no unpleasant features in the mix. The lower treble, on the other hand, sounds same but with a more approachable and apparent quality. The vocals and instruments sound softer and more tonally agreeable, resulting in a smoother response that is delightful to listen to. Tracks like Kohana Lam's Loving Me, Loving You sound incredibly stunning since Lam's vocals are open and light, with clarity in each note while keeping tonal precision. The positioning allows her vocals to provide a more airy and expansive response that reaches far. However, tracks like URU's Kimino Shiawasewo sound a little closed up because they lack air in the upper octaves; it appears that the voices cut off at some point in the upper frequencies since this track is vocal centered; the prominence makes the minor subtleties feel lost, even if the vocals have a fuller sound. Thus, the overall presentation of the treble area is smooth, clear, and tonally pleasing.

Mid Range

Coming to the mid-range, it appears that the QT-X has a mid-centric response since the notes in this region are quite upfront, particularly the voices, which are positioned front and center, resulting in an engaging response. Regardless matter how the bass and treble regions are adjusted, there is no mid-range spike, therefore no unpleasant characteristics can be heard. The upper mid-range has a very forward and lively response, and both vocals and instruments sound expansive, which makes it more fascinating since details can be heard clearly, yet the weight of the notes makes it sound light but not thin. Because of the way the treble is tuned, the voices and instruments remain well-controlled and within the same dynamic range. The lower mid-range lacks heaviness and weight in the notes, but the vocals and instruments sound clean and transparent. Tracks like The Reason by Hoobastank have distinct and clear vocals with an engaging response, but the instruments, such as the drums or guitar, lack the note weight to feel genuine and organic. Tracks like Only Love Can Hurt Like This by Paloma Faith provide a more linear and open-sounding response, with her serving as the focal point; her vocals are considerably clearer and complete, making the whole response interesting and refreshing to listen to. As a result, the overall presentation of the mid-range is compelling, open, and forward-sounding.


When it comes to the bass region, the bass is far too controlled, allowing it to sound incredibly precise and robust in terms of texture and detail but lacking weight and presence in the mix. Not that it doesn't have an affect, but it resolves faster and makes the response sound immaculate and crisp. The emphasis is on the sub-bass, and the mid-bass lacks a lot of note weight, so the slams and thumps are merely apparent and do not provide the natural presence and weight of kick drums or bass guitar notes. On the other hand, the sub-bass is deep and rumbling enough to induce feeling in the ear canals, but the punches are impactful. However, in bass-heavy tracks, I noticed that the overall bass response was cleaner and more articulated, with some increased mid-bass response that sounded extremely well controlled and precise. Nitti's tracks, such as Middle Of The Night, sound incredibly spacious and resolved, allowing the bass to pass through clean and forceful, with superb mid-bass presence. However, complex tracks such as Miliyah's Kono Yumega Samerumade sound weightless; even though her vocals are clear and distinct in the response, the bass notes do not sound dynamic or as emphasised as before, allowing Miliyah's vocals to come across as natural and delicate, which I found very mesmerising. Overall, the bass area is presented in a controlled, textured, and articulate manner.

Technical Performance

The QT-X's technical abilities are quite excellent for the price; I feel they are comparable to other IEMs in this price bracket, such as the Quintet, Falcon Ultra, and so on. I feel that using BAs resulted in a more sterile response, which improved detail retrieval, separation, and note speed. Let us dive into additional specifics.


Soundstage, Sound Imaging & Separation

The stage is big enough to sound far and wide, with the vocals front and center and the instruments coming from afar, creating a feeling of amazing clarity and spaciousness. The image is likewise sharp and clear, and the notes are precise and effortless. The separation is excellent since the notes are clear and have adequate breathing room, allowing me to quickly identify the direction from which the sound is coming.

Speed & Resolution

The resolution is not by far the greatest when compared to its rivals, but macro details are easily revealed, with acceptable micro details surfaced. The attack and decay of the notes are quite rapid, allowing for a very defined presentation without interfering with the overall response.

Sound Impressions


Sony WM1A - While listening to this pairing, the response sounded considerably farther and wider, allowing the vocals to seem more linear and airier, resulting in a livelier presentation with instruments sounding as if complementing the vocals. The bass was more rumbling and present, particularly in the midbass range. The notes, however, sounded more rounded and genuine.


QUESTYLE M15i - While listening to this pair, the response felt slightly less weighted, with a more open-sounding presentation. Despite the fact that the response sounded light and lean, the notes' presentation did not add any metallic or harsh characteristics of the notes that are typical of a tuning like the QT-X. The treble sounded more prolonged and smooth than previously, but the mid-range seemed less front or in your face, with better-positioned singers and instruments sounding expansive and spread out. However, the response sounded confined in the left and right channels while spreading more in the front and rear. Tracks like Kenka by Kujira Yumemi sounded crisp and clear, without sounding hot or sibilant, thanks to voices scaling very high and chimes presented in your face. The bass seemed more powerful and genuine since the kick drums or bass guitar notes decayed organically after hitting.


QUESTYLE CMA18 - While listening to this pairing, the response sounded revealing, but not in an energetic way, but rather in a more soothing manner, with better contrast in overall reaction. The treble sounded more comfortable, with better extension. The voice and instrumentation both sounded more direct and appealing. The whole response sounded clearer and airier than previously.


Rose Technics RZ500 - While listening to this pairing, I noticed that the response sounded closer and more intimate, with a better grasp on note weight, while remaining consistent but with improved timbre and tonal correctness. The treble sounded crisper but leaner, with more clarity in the notes, while the midrange seemed less airy and more satisfying, with lots of energy and details. The notes, whether voices or instruments, were exposed in a really lively way. The bass sounded controlled and textured.



Millet - Anytime Anywhere
Anri - I can’t stop the loneliness
Kohana Lam - A Few Sentimental
Kohana Lam - Loving Me, Loving You
Uru - Kimino Shiawasewo
Uru - Kamihitoe
Kujira Yumemi - Kenka
Majiko - Kokoronashi
Anly - Sukinishinayo
Kohama Lam - A Few Sentimental
Kohana Lam - Loving Me, Loving You
Miliyah - Kono Yumega Samerumade
Rokudenashi - The Flame Of Love
Yu-Peng Chen - A New Day with Hope
Yu-Peng Chen - Another Hopeful Tomorrow
Yu-Peng Chen - For Riddles, for Wonders
Valentino Khan - Satellite
Kai Wachi - Happier By Now
Jawns - Erotica
ISOxo - how2fly
Kai Wachi - Happier By Now
Nitti - Middle Of The Night
Weeknd - Popular
YUNGBLUD - When We Die(Can We Still Get High)
Bring to Horizon - Kool-Aid
Middle Kids - Bend
FLETCHER - Leads Me On
Loathe - Aggressive Evolution
The Weeknd - Save Your Tears
Sigrid - Burning Bridges
AURORA - Black Water Lilies
AURORA - Runaway
X Ambassadors - Renegades
Lupe Fiasco - Words I Never Said
Macklemore & Ryan Lewis - Can’t Hold Us
Gotye - Somebody That I Used To Know
Jay-Z - Run This Town
Lady Gaga - Poker Face
Lady Gaga - Just Dance
Ladytron - Ghost
Travis - Love Will Come Through
LINKIN PARK - Somewhere I Belong
DJ Shadow - Six Days (Remix)
Hoobastank - The Reason
Ricky Martin - I Don’t Care
Tool - 7empest
Tool - Vicarious
A Flock Of Seagulls - Space Age Love Song
Zack Hemsey - Vengeance
Elton John - I’m Still Standing
The Moody Blues - Nights In White Satin
Micheal Sembello - Maniac
Guns N’ Roses - Sweet Child O’ Mine
A.R. Rahman - Kun Faya Kun


To summarise this review, the QT-X is a highly professional-sounding IEM tuned to be fairly mid-centric yet with well-balanced treble and bass, allowing for good depth and width in sound, so it does not provide an overwhelming response but rather a spacious and well-resolved one. It is not a neutral or fun-sounding IEM, but it is ideal for those who enjoy singing and desire a revealing and dynamic presentation. Thus, I heartily recommend QT-X, especially now that it has a Dongle-DAC of its own.



500+ Head-Fier
Rose Technics QT-X (Value Pack)
Pros: * Nice package and accessories
* Inclusion of RZ-500 DAC/Amp featuring flagship ES9038Q2M DAC & ESS9603Q Amp chip
* Lightweight shells, easy and nice fit
* Good technical chops
* Good bass quality
* Easy to drive
Cons: Thinness and sharpness in upper mids
Founded in 2012, Rose Technics has a good presence in the audiophile industry in China. With a diverse range of products, including in-ear monitors, true wireless earphones, and headphones, Rose Technics has garnered praise from enthusiasts. They are quite confident about tuning of their iems, some of which are done by notable people coming from companies such as Sony, Fostex, etc. I have tried a few other iems from their lineup and was really interested in trying the top-line iems.

I got a chance to try out the QT-X iems, an iem from their line-up equipped with 1 dynamic driver and 6 BA drivers. It's available to buy on Concept Kart in India here: link.

Alternatively, it is available here on the Rose website: Link
You also can get a pair on the AliExpress Store: Link


Rating Criteria:

I want to lay out my rating criteria before we start off. For me, the primary criterion for evaluating audio gear is its intrinsic value rather than its price tag. A higher price doesn't always correlate with superior quality, and similarly, a low-priced product can give enough listening pleasure for it to be called outstanding. I consider the build, features, and, most importantly, the impact on the listening experience. The fundamental purpose of audio gear is to enhance the listening experience. So for me, this degree of enhancement in the listening experience is a key determinant in rating a product.

Rating below 4: I really won't be posting reviews of such items unless someone has asked for them.
Rating of 4: The product is good, and some users may find it more satisfactory, but it does come with a few caveats, such as price, fit, etc.
Rating of 4.5: The product is excellent and comes with an easy recommendation, reflecting its high quality and overall positive attributes.
Rating of 5: This product can be deemed groundbreaking, a trendsetter, and an eye-opener and deserves a spot on everyone's list due to its exceptional features and outstanding performance.

Configuration (from the website):
Design, build, and fit:

I really appreciate the design of these iems; they are lightweight and well-built. The material feels durable, and the shape of the shells provides a comfortable fit for longer listening sessions. The cable is of good quality, with a 2-pin connection and a 4.4mm adapter included. It's also nicely finished with a fabric sleeve. The case included with these IEMs is of high quality and feels well-built, with good materials for the price. Overall, they have included enough accessories inside the box.

Additionally, there is a vent present on these IEMs to minimise pressure buildup. I haven't experienced any pressure or driver flex issues during my time with them.

The iems have slightly smaller nozzles, and wider than usual ear tips can fit well with them. The tips that come with the package are ample and fit really well on these iems. However, I tried them on Azla Sedna Light eartips, which fit really well.


Sound Analysis:
These iems have a sound that is quite satisfactory. The sound profile is near-bright, with a good emphasis on bass.

Bass stands out as a highlight on these iems. The lows are quite deep, and the subbass has a good body. There is a noticeable subbass rumble, which makes the bass a lot more enjoyable. In terms of bass layering and texture, these iems do really well. Midbass is well implemented, not giving a sense of being scooped out, and has a satisfactory quantity. There is no midbass bleeding into the midrange, and the midrange comes across clean.


Mids are neither too forward nor pushed back. These iems maintain sweetness in the midrange, but I find the mids on the thinner side. It has crisp mids and is good in terms of resolution. The lower mids have good weight, though. The thinness (not much) is more in the upper midrange.

Treble on these iems is done quite well. This region has a good amount of energy and extends really well. The micro-details are well presented. This treble is not harsh or sibilant, but it can come across as bordering sharp for some people.

On the technical front, these iems are really capable. Soundstage has a decent width and spreads far and wide. Imaging is good, and one can accurately position instruments and their placements. The resolution and clarity are very impressive too. The notes sound clean and crisp. I think for an iem of this price, the technicalities are more than impressive.


Source Synergy
QT-X is quite easy to drive and be easily driven even with a dongle and a mobile phone. With a good source, the sound is open and the resolution enhances a bit.

RZ-500 portable dac/amp:
The inclusion of this dac/amp is more than impressive. It features the flagship ES9038Q2M DAC & ESS9603Q amp chip. The sound is as good as other dongles on the market, which are available for about 100 USD. It comes with a USB-C cable to connect to PCs and mobile phones. I, however, had issues connecting it to my iPhone and could not use this dongle on it. There are a couple of other issues, such as the non-inclusion of the volume button on the dongle, which may limit the use-case for this dongle compared to others. However, it is a really standout feature, and I have not seen any other brands go this way.


In the crowded market of budget to mid-fi iems (less than 500 USD), these iems offer quite a fresh approach. They stray away from the typical tuning that most of these iems have and give a nice sound quality, especially the nice bass on it. The value pack is a nice welcome for the people and gives immense value for money. All in all, these iems are a decent pair and get an easy recommendation from me.
Last edited:
These look really nice bhai. Hope to hear these soon.