Description
AUDIOCULAR C03 8-Core Silver-Plated Cable with 3.5mm Jack & Built-In Microphone
Crafted for Audiophiles
Elevate your listening experience with the AUDIOCULAR C03 Upgrade Cable, designed specifically for In-Ear Monitors (IEMs) with a 2-pin 0.78mm connector. Engineered for audiophile-grade sound, it enhances bass, treble, and vocals, delivering a balanced and distortion-free audio experience.
High-Purity 8-Core Silver-Plated Construction
Built with an 8-core silver-plated copper design, the C03 cable ensures excellent conductivity, enhancing sound clarity, depth, and detail. This construction offers a more immersive and dynamic listening experience with your IEMs, making it an essential upgrade for music lovers.
Enhanced Sound Quality
Experience improved audio fidelity with the C03 cable. It delivers natural bass, refined highs, and smooth, clear vocals, enhancing the overall frequency response for a balanced and detailed listening experience.
Convenient Volume & Mic Controls
With built-in volume and mic control buttons, you can easily manage calls, adjust volume, and control music playback without needing to reach for your device.
Universal 3.5mm Plug & Robust Build Quality
Equipped with a universal 3.5mm plug, the cable ensures stable and fast signal transmission. The durable metal shell features high-density shielding to prevent interference, providing clear, noise-free audio and long-lasting durability.
Rediscover the Power of Music
The AUDIOCULAR C03 Upgrade Cable reduces noise and interference, eliminating sound gaps and restoring the true essence of your favorite tracks. Experience detailed, distortion-free sound that brings your music to life.
Brand Name: AUDIOCULAR
Model Name: C03
Product Name: AUDIOCULAR C03 Upgrade Cable for IEM
Number of Cores: 8 Core
Material: Silver-plated Cable
Connector: 2Pin 0.78mm
Mic: Yes
Plug: 3.5mm
Size: 1.2m
Warranty Period: 6 Months
AUDIOCULAR C03 8-Core Silver-Plated Cable with 3.5mm Jack & Built-In Microphone For IEMs
When I brought this cable, I thought it has the same thickness as the cable I had. But this thing is thick in a good way. It is very sturdy. I really like the metal part near the 3.5mm, splitter and pin connectors. The only thing is that it has some memory when folding. Other than that love it.

Description
AUDIOCULAR C03 8-Core Silver-Plated Cable with 3.5mm Jack & Built-In Microphone
Crafted for Audiophiles
Elevate your listening experience with the AUDIOCULAR C03 Upgrade Cable, designed specifically for In-Ear Monitors (IEMs) with a 2-pin 0.78mm connector. Engineered for audiophile-grade sound, it enhances bass, treble, and vocals, delivering a balanced and distortion-free audio experience.
High-Purity 8-Core Silver-Plated Construction
Built with an 8-core silver-plated copper design, the C03 cable ensures excellent conductivity, enhancing sound clarity, depth, and detail. This construction offers a more immersive and dynamic listening experience with your IEMs, making it an essential upgrade for music lovers.
Enhanced Sound Quality
Experience improved audio fidelity with the C03 cable. It delivers natural bass, refined highs, and smooth, clear vocals, enhancing the overall frequency response for a balanced and detailed listening experience.
Convenient Volume & Mic Controls
With built-in volume and mic control buttons, you can easily manage calls, adjust volume, and control music playback without needing to reach for your device.
Universal 3.5mm Plug & Robust Build Quality
Equipped with a universal 3.5mm plug, the cable ensures stable and fast signal transmission. The durable metal shell features high-density shielding to prevent interference, providing clear, noise-free audio and long-lasting durability.
Rediscover the Power of Music
The AUDIOCULAR C03 Upgrade Cable reduces noise and interference, eliminating sound gaps and restoring the true essence of your favorite tracks. Experience detailed, distortion-free sound that brings your music to life.
Brand Name: AUDIOCULAR
Model Name: C03
Product Name: AUDIOCULAR C03 Upgrade Cable for IEM
Number of Cores: 8 Core
Material: Silver-plated Cable
Connector: 2Pin 0.78mm
Mic: Yes
Plug: 3.5mm
Size: 1.2m
Warranty Period: 6 Months
AUDIOCULAR C03 8-Core Silver-Plated Cable with 3.5mm Jack & Built-In Microphone For IEMs
When I brought this cable, I thought it has the same thickness as the cable I had. But this thing is thick in a good way. It is very sturdy. I really like the metal part near the 3.5mm, splitter and pin connectors. The only thing is that it has some memory when folding. Other than that love it.
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OUR HONEST REVIEWS FROM THE CO-FOUNDERS & AUDIOPHILES
View allTRUSTED BY OVER 35K+ MUSIC ENTHUSIAST
Let customers speak for us
from 4877 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.