Description
ROSESELSA has released its all-new flagship-level portable DAC/AMP, the ROSESELSA RS9039. This mighty device is compact in nature and houses the next-gen flagship ES9039Q2M 32-bit DAC chipset. ROSESELSA has also designed a high-power amp section that produces a powerful amplification, promising a strong 300mW output through the balanced output. It has been designed to take your listening experience to all-new heights with its outstanding capabilities. Use the RS9039 with your smartphone, laptop, or any other device and enjoy quality sound anytime, anywhere.
Experience The Next-Generation of Flagship DACs:
ROSESELSA is the first DAC in the portable segment to feature the all-new ES9039Q2M flagship DAC chipset. It features HyperStream IV Architecture, promising efficient high-quality sound performance. The DAC comes as a successor to the widely acclaimed ES9038Q2M and ensures best-in-class performance with ultra-low distortion and high SNR performance. Prepare to open your listening senses with the ultimate performance of the RS9039.
Compact Powerhouse:
ROSESELSA has featured a high-power amp section on the RS9039. The DAC has a strong output power rating of up to 300mW (Balanced) and 240mW (Single-Ended). It can be paired with a variety of HiFi audio gear, including both sensitive as well as high-power requiring IEMs and headphones. With its enhanced circuit design and independent headphone amplifier chipset, the RS9039 delivers rich and dynamic sound with ultimate clarity.
Ultimate Build Quality:
ROSESELSA RS9039 features a compact footprint with solid build quality. The device is built using a CNC machining process with high-quality aluminium alloy material. The chassis has a rich matte finish, it looks and feels amazing, and is durable as well.
Dual Headphone Output Ports:
ROSESELSA RS9039 features dual headphone output ports. It includes a 3.5mm single-ended and a 4.4mm balanced headphone port. In today’s time, these two are the most widely used termination options, so you get to experience high-quality sound directly with your IEMs/Headphones.
Clean Output With Almost “0” Background Noise:
ROSESELSA RS9039 is equipped with low-noise LDO power chips. It achieves an ultra-high SNR performance of up to 126dB, ensuring the output is clean, crisp, and accurate. There is no audible noise floor even with sensitive IEMs/Headphones. Enjoy your favorite music with ultimate level clarity and sound decoding with an enhanced response.
DAC Chip: ES 9039
Weight: approximately 14.5 grams
Dimensions: 48mm x 22mm × 12mm
Single-ended Output Power: 240mW @ 1kHz, 320
Balanced Output Power: 300mW @ 1kHz, 320
THD+N: 0.0003% @ 1kHz, 320
SNR: 126dB @ 1kHz, 320
Warranty Period: 1 Year from the date of Invoice
Covered: Manufacturing Defects Only
Warranty Form: https://www.theaudiostore.in/pages/warranty-claim-form Cable: 1-month warranty only for manufacturing defects only
Established in 2012, Rose Technics is dedicated to delivering unparalleled sound through innovative technology and meticulous craftsmanship. Known globally for our timeless and elegant designs, we integrate advanced technologies to create unique audio products that seamlessly enhance everyday life.
It's little expensive but a good device, it serves it purpose very well and build quality and design is also good.
Thank you for taking the time to leave a review for our ROSESELSA RS9039 Portable DAC & AMP. We are delighted to hear that you find our device to be of good quality and design, and that it serves its purpose well. We understand your concern about the price, but we assure you that it is reflective of the high-quality materials and advanced technology used in our product. We appreciate your feedback and hope that you continue to enjoy our device.

Description
ROSESELSA has released its all-new flagship-level portable DAC/AMP, the ROSESELSA RS9039. This mighty device is compact in nature and houses the next-gen flagship ES9039Q2M 32-bit DAC chipset. ROSESELSA has also designed a high-power amp section that produces a powerful amplification, promising a strong 300mW output through the balanced output. It has been designed to take your listening experience to all-new heights with its outstanding capabilities. Use the RS9039 with your smartphone, laptop, or any other device and enjoy quality sound anytime, anywhere.
Experience The Next-Generation of Flagship DACs:
ROSESELSA is the first DAC in the portable segment to feature the all-new ES9039Q2M flagship DAC chipset. It features HyperStream IV Architecture, promising efficient high-quality sound performance. The DAC comes as a successor to the widely acclaimed ES9038Q2M and ensures best-in-class performance with ultra-low distortion and high SNR performance. Prepare to open your listening senses with the ultimate performance of the RS9039.
Compact Powerhouse:
ROSESELSA has featured a high-power amp section on the RS9039. The DAC has a strong output power rating of up to 300mW (Balanced) and 240mW (Single-Ended). It can be paired with a variety of HiFi audio gear, including both sensitive as well as high-power requiring IEMs and headphones. With its enhanced circuit design and independent headphone amplifier chipset, the RS9039 delivers rich and dynamic sound with ultimate clarity.
Ultimate Build Quality:
ROSESELSA RS9039 features a compact footprint with solid build quality. The device is built using a CNC machining process with high-quality aluminium alloy material. The chassis has a rich matte finish, it looks and feels amazing, and is durable as well.
Dual Headphone Output Ports:
ROSESELSA RS9039 features dual headphone output ports. It includes a 3.5mm single-ended and a 4.4mm balanced headphone port. In today’s time, these two are the most widely used termination options, so you get to experience high-quality sound directly with your IEMs/Headphones.
Clean Output With Almost “0” Background Noise:
ROSESELSA RS9039 is equipped with low-noise LDO power chips. It achieves an ultra-high SNR performance of up to 126dB, ensuring the output is clean, crisp, and accurate. There is no audible noise floor even with sensitive IEMs/Headphones. Enjoy your favorite music with ultimate level clarity and sound decoding with an enhanced response.
DAC Chip: ES 9039
Weight: approximately 14.5 grams
Dimensions: 48mm x 22mm × 12mm
Single-ended Output Power: 240mW @ 1kHz, 320
Balanced Output Power: 300mW @ 1kHz, 320
THD+N: 0.0003% @ 1kHz, 320
SNR: 126dB @ 1kHz, 320
Warranty Period: 1 Year from the date of Invoice
Covered: Manufacturing Defects Only
Warranty Form: https://www.theaudiostore.in/pages/warranty-claim-form Cable: 1-month warranty only for manufacturing defects only
Established in 2012, Rose Technics is dedicated to delivering unparalleled sound through innovative technology and meticulous craftsmanship. Known globally for our timeless and elegant designs, we integrate advanced technologies to create unique audio products that seamlessly enhance everyday life.
It's little expensive but a good device, it serves it purpose very well and build quality and design is also good.
Thank you for taking the time to leave a review for our ROSESELSA RS9039 Portable DAC & AMP. We are delighted to hear that you find our device to be of good quality and design, and that it serves its purpose well. We understand your concern about the price, but we assure you that it is reflective of the high-quality materials and advanced technology used in our product. We appreciate your feedback and hope that you continue to enjoy our device.
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Let customers speak for us
from 4875 reviewsKZ Castor Harman Target Version – Review
Design & Comfort
Lightweight, durable, and comfortable with a detachable cable. The in-line mic is useful for calls and gaming.
Sound Quality
Bass: Punchy and deep without overpowering.
Mids: Clear vocals and instruments.
Highs: Crisp but slightly bright.
Soundstage: Decent separation for immersive listening.
Pros:
✔ Enhanced bass
✔ Balanced tuning
✔ Comfortable & durable
✔ Affordable
Verdict:
A budget-friendly IEM with great sound and comfort, though the mic is just decent.
I'm using first time DAC most of the people refer this varient, difference between 3.5mm jac and this DAC D07 is absolutely awesome, so much details in hearing a song and music, loved it ❤️❤️❤️❤️👌👌👌🙏🙏🙏
Solid pouch
With good space
The product is worth the money
And I personally love the your faster delivery service
I got the product just in with 30 Hrs

I like Moondrop ECHO-A Dac. It is not powerful Dac but it produces quality sound .

Great for listening to all music genres, gaming on PC or consoles or pretty much any thing you'd like to do with a pair of earphones.
Superb packaging 👍🏻 delivered what was promised.

I recently got my hands on the ROSESELSA AURORA Ultra IEM, and I must say, it has exceeded my expectations! For under 2,000 INR, this IEM delivers exceptional value and performance that can easily compete with many pricier models out there.
What really stands out to me is its versatility. The AURORA shines across all genres, whether I'm diving into classical symphonies, jamming to rock anthems, or vibing with electronic beats. The sound quality is simply fantastic, making every listening session a joy.
A cherry on top is the comfort factor—these IEMs are small and lightweight, so they don’t cause any discomfort during long listening sessions. If you’ve had issues with larger IEM shells in the past, you’ll find the AURORA to be a perfect fit. Plus, the cable quality is impressive for the price, adding to the overall value of this product.
To unlock the full potential of these IEMs, I highly recommend investing in an external dongle. I personally use the Kiwi Ear Allegro Mini DAC, and it has truly elevated my audio experience. If you're on the hunt for a budget-friendly IEM that doesn’t compromise on sound quality, the ROSESELSA AURORA is a must-try!
I also want to take a moment to thank the audio store for their outstanding service. My order arrived in perfect condition, and their customer support team was incredibly friendly and helpful. Overall, this has been a wonderful experience, and I’m absolutely thrilled with my purchase!
As a v16 owner this is a worthy upgrade .
Fit :
The iem is designed aesthetically that it fits like custom made
Sound impressions :
Treble is perfectly done with being sibilant, Mids sounds very organic and clear, Bass is the best part here it's a step up from their previous flagship v16.
Staging is better and so is the resolution, A total flagship level iem which punches above the price tag
Thanks to Pritam for his exceptional customer service and deal .
Definitely recommended

Have a great features and I am very happy after buying this m71 thanks audio store 🙏🙏

Time Spent with this DAP is more than 50 days, used many IEMs from Budget range to high end.
OBSERVATION & EXPERIENCE SO FAR.
- Wide soundstage, it's creating a spacious listening experience.
- Smooth and refined sound, with good bass & trebles. I liked it.
- little high Volume doesn't hurt ears because of spaciousness which this DAP creates.
- Main unique point is Vocals & Instruments separation, it's best.
- So far, I noticed Battery back up is really good. Will check it over time and provide feedback.
- Does not get warm that too after using for hours.
- Best software & Shanling Music app, it's very fast ( I use 1TB fully loaded Micro SD card.)
Please Note - Little more care is needed while handling as it has Glass tubes. Again it's unique offering & tubes makes music more enjoyable.
CONS-
1. Charging time ( it will get solve by software updates in future, Brand has co
nfirmed it in their post)
2. Only one colour option is available from Brand.
3. Some settings currently not present, Brand may add in future updates ( DSD gain Compensation, PEQ, MSEB, Night light short cut in quick pannel)
CONCLUSION-
a. Highly recommend those who want detailed & immersive experience.
b. THREE IN ONE- One DAP but three modes, all three sounds differently. One mode Transistor (without Tubes) and two Tube modes (Triode & Ultra- linear).

Sterdy & beautiful cable. I am using it with Hidiz MP145 Planner Magnetic IEM. It add details to music over stock cable. Makes all aspect of sound quality better.

I am writing review after One month regularly uses with my two DAP - Shanling M8t, Hiby R4.
POSITIVES-
1. Best Soundstage
2. Balanced sound
3. Musical & Makes music more enjoyable to ears.
4. No fatigue despite of metal construct.
5. Weight distribution is really good.
6. Largest Magnetic planner in the Category.
7. Details & instruments separation at best.
CONS-
1. Small ears may face challenge. Plz contact team ATS before purchase. Normal ear size, No issues with fit & long usage.
2. Stock cable is good but doesn't suit this IEM.
I am using this with Divinus Auram cable, which goes really well with this by appearance as well as by performance.
CONCLUSION-
1. Very very happy with the purchase. It's my main IEM in daily music journey.
2. My suggestion is Music enthusiast must have atleast one 'Planner Magnetic IEM', believe me I found that the the songs which I am listening since decades are sounding differently with some more details with this IEM.

The KZ Castor is an excellent choice for budget audiophiles. It delivers superb sound quality that rivals much more expensive headphones, with clear highs, rich mids, and deep bass. The build quality is solid, offering both durability and comfort for long listening sessions. At its price, it’s a fantastic value, outperforming many premium options. Highly recommended!

i think it's a great choice for someone who's just starting with the "iem" audiophile thing and it sounds good pretty good for the price range, it's sound clear and crisp, the bass is a little on the lower side but nonetheless great product if you are just starting, oh and yes the delivery was fast got it in a day.