TAS Commitment
Product Snapshot
🔌 4 tuning switches & Dual Dynamic Driver
🎧 Ideal for beginners: music enthusiasts, gamers, musicians
🎵 Bright sound: strong bass, lively & sparkly treble, clean mids
🔊 All-rounder and suitable for almost any music genre
🌟 Average wide soundstage
🏠🏞️ Indoor & outdoor use
⚡ Easy to drive, scales with portable DAC & AMP
🎤 In-line mic for calls, recording, meetings, gaming
⏯️ Play/pause
🛠️ Includes 2 pairs of silicone eartips, detachable 0.75mm 2Pin cable (3.5mm jack)
📜 1-year IEM warranty, 1-month cable warranty
📧 For warranty claims: hello@theaudiostore.in
🧑🔧 Pro tip: Order with a portable DAC and carry case
Description
KZ Castor Pro Earphones With Mic
Redefining Dynamic Driver Performance
The KZ Castor Pro In-ear Monitors revolutionizes the traditional limitations of single dynamic driver earphones. Featuring dual 10mm dynamic drivers, it ensures an expansive soundstage with high-fidelity audio, offering a transformative listening experience.
Precision Acoustic Engineering
With professional-grade electronic crossover technology and a high-precision four-level tuning filter, the KZ Castor Pro achieves unmatched sound clarity. Each component is meticulously designed to deliver a harmonious blend of bass, midrange, and treble for a full-range Hi-Fi experience.
Dual Versions for Personalized Sound
The KZ Castor Pro Earphones offer two variants:
- Harman Target Version: Tuned for a refined frequency curve aligned with the Harman target, delivering balanced and natural sound.
- Harman Target with Improved Bass Version: Enhanced low-frequency response with dual sensitivity and dynamic range improvements.

Unrivalled Bass and Frequency Integration
Equipped with an independent low-frequency driver, the KZ Castor Pro delivers deep, impactful bass while maintaining clarity in the mid and high ranges. Professional crossover technology ensures seamless frequency transitions, capturing every nuance with precision.
Customizable Tuning for Your Unique Sound
A four-stage tuning switch allows you to personalize your audio experience effortlessly:
- Bass levels can be adjusted up to +2dB.
- Mid and high frequencies can be enhanced by +2dB.
Fine-tune your sound for every genre and preference.

Luxurious Zinc Alloy Casing
The durable zinc alloy housing combines a lightweight design with luxury. Each detail reflects exceptional craftsmanship, ensuring a premium look and feel.
Ergonomic Design for All-Day Comfort
The skin-friendly resin cavity and silicone ear tips provide a secure and comfortable fit, even during extended use. Its ergonomic design ensures minimal fatigue, making it ideal for long listening sessions.

Oxygen-Free Copper Cable for Pristine Sound
The high-purity oxygen-free copper flat cable ensures excellent signal transmission for accurate sound reproduction. The durable TPE outer sheath resists wear and tear, guaranteeing longevity without compromising performance.
Effortless Controls and Clear Communication
The in-line remote control offers easy access to music playback, call management, and voice commands. Its built-in microphone ensures crystal-clear communication, enhancing your overall convenience.
Eco-Friendly Packaging Philosophy
KZ maintains a commitment to sustainability with its simple and eco-friendly packaging. The focus remains on delivering exceptional product quality without unnecessary waste.
AUDIOCULAR SPARK Hi-Res Portable DAC Dongle (CX31993 + MAX Amp)

Experience Studio-Grade Audio Anywhere
The AUDIOCULAR SPARK is a premium Type-C to 3.5mm portable DAC dongle, built to transform your everyday listening into a high-fidelity experience. Powered by the flagship CX31993 DAC chip and MAX97220 amplifier, the SPARK delivers studio-quality audio with exceptional clarity, rich bass, and crisp detail—making it the ideal upgrade for audiophiles, music lovers, and gamers on the go.
Key Features
🎧 Flagship DAC + Amplifier Combo
Featuring the powerful CX31993 DAC and MAX97220 amp, SPARK offers expansive sound with dynamic lows, smooth mids, and ultra-clear highs—free from distortion or harshness.
🔊 Hi-Res Audio Support (32bit/384kHz)
Enjoy PCM 32bit/384kHz and ADC 24bit/96kHz audio decoding. With an SNR >124dB and THD+N as low as 0.000003, your audio stays pure, detailed, and immersive.
💪 High Power Output
SPARK delivers up to 63mW at 32Ω, ideal for driving IEMs and headphones between 16–32Ω. Whether you're on mobile or desktop, hear your music fully come alive.
🎵 Immersive Soundstage & Isolation
Perfect for gaming or movies, SPARK creates a wide and accurate soundstage, restoring subtle background effects while reducing external noise distractions.
🔗 Seamless Type-C to 3.5mm Compatibility
Easily connect your favorite wired headphones to smartphones, tablets, or notebooks with USB-C ports—no compromises on sound quality.
🧳 Ultra-Portable and Travel-Ready
Its compact, lightweight design fits easily in your pocket or case—ideal for commuting, working, or relaxing on the go.
🛠️ Durable & Audiophile-Grade Build
Built with 8-strand silver-plated copper wire and a gold-plated 3.5mm jack, the SPARK ensures optimal conductivity, durability, and long-term performance.
🔌 Universal Device Support
Works flawlessly with most Android phones, laptops, and tablets with Type-C ports—no driver required for plug-and-play convenience.
Specifications
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Model: AUDIOCULAR SPARK
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DAC Chip: CX31993
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Amp Chip: MAX97220
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Decoding Support: PCM 32bit/384kHz, ADC 24bit/96kHz
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Power Output: 63mW @ 32Ω
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Signal-to-Noise Ratio (SNR): >124dB
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Dynamic Range (DNR): >120dB
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THD+N: 0.000003
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Compatibility: 16–32Ω headphones
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Connector: USB Type-C to 3.5mm
Why Choose AUDIOCULAR SPARK?
If you're looking for a hi-res DAC dongle under budget that doesn’t compromise on build quality, sound fidelity, or power output, the AUDIOCULAR SPARK is your ideal pick. It’s a true plug-and-play solution that elevates your everyday audio into a rich and immersive sonic journey.
✅ Ideal For
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Audiophiles & Music Enthusiasts
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On-the-go Hi-Fi Listening
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Mobile Gamers
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Commuters & Remote Workers
KZ Castor Pro IEM With Mic
Product model: KZ Castor Pro
Frequency: 20-40000Hz
Impedance
Harman Target Version: 22-40Ω
Harman Target with Improved Bass Version: 16-22Ω
Sensitivity:
Harman Target Version: 101-104dB
Harman Target with Improved Bass Version: 100-103dB
Plug type: 3.5mm
Pin type: 0.75mm
Cable type: Flat transparent black cable
Cable length: 120±5cm
Microphone: Yes
Warranty: 1 Year
In The Box
1 Pair of IEM
1 Cable
2 Pair of Eartips
AUDIOCULAR SPARK Hi-Res Portable DAC Dongle CX31993 + MAX Amp
Model: AUDIOCULAR SPARK
DAC Chip: CX31993
Amp Chip: MAX97220
Decoding Support: PCM 32bit/384kHz, ADC 24bit/96kHz
Power Output: 63mW @ 32Ω
Signal-to-Noise Ratio (SNR): >124dB
Dynamic Range (DNR): >120dB
THD+N: 0.000003
Compatibility: 16–32Ω headphones
Connector: USB Type-C to 3.5mm
Warranty period: 12 months
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OUR HONEST REVIEWS FROM THE CO-FOUNDERS & AUDIOPHILES
View allTRUSTED BY OVER 60K+ MUSIC ENTHUSIASTS
Let customers speak for us
from 7155 reviews
These are my fourth pair of IEMs, and honestly, I can’t find a single fault with them. The sound signature is beautifully smooth, well‑tuned, and perfectly balanced. Vocals come through with striking clarity, making every track feel alive. Totally worth it — they deliver an experience that goes beyond expectations.
I’m really impressed with the Hiby R1 — such a compact device, yet it delivers powerhouse performance. The raw specs on a spreadsheet don’t capture the real experience. Once you pair it with Type‑C IEMs and play FLAC files, the sound quality speaks for itself: clean, detailed, and surprisingly dynamic for something so portable. It’s proof that great audio isn’t just about numbers, but about how the gear actually performs in your hands (and ears).
It was neatly packed and unexpected case has been delivered along with the DAC. Had a nice experience too with the product. Loved it!
I've previously owned some budget iems like kz zex, tangzu wan'er and chu 2 but Ohh boy the sounds on STA HI-END is so soothing and melodious and it handles eq like a champ so no complaints from there too. Absolutely go for it you won't regret
Powerful, clear and you can hear the complete trace of audio.
I have been using the Tanchjim Bunny DSP for a while, and for the price, it’s honestly a very good set of earphones. The build quality is very simple but good, and the light weight makes it very comfortable for long usage.
The sound quality is very balanced for the price. The bass is good and controlled rather than overemphasized, and the mids are good so that the vocals are very natural, and the trebles are good and detailed but not harsh. This makes them very good for all types of music.
The Tanchjim Bunny DSP is a very good earphone for the price, and I would recommend it for people who are looking for a very simple plug-and-play earphone with good sound quality.
Sound is very good and accurate.. Soundstage is also wide and deep.. Like this Bunny...
Overall good quality
WelI i loved the iem Its good for my studyinh and music session go for it iems
Bets budget dac that gives you clear mids and more treble extension... If you are into edm trance symphony orchestra style music... then you will hear better instrument separation...
The cable is soft material so not for on the go will wear and tear... If you are musichead and always hooked then better go with audiocular beam it has cavlar braided cable for good rough n tough life space
Heard a lot of stuff on internet about this dac like hitching or buzzing sound and was bit nervous , but after purchasing I haven't faced any problem with it and I'm fully satisfied with the build and sound quality of the product.
This is one of the best case I have used till today. Definitely beats other cases at this price range. It is much better than the generic cases available on Amazon, Flipkart, etc.
I have recommended this case to my friends who were so impressed on seeing it.
Why?
The quality of music that it is deliveing is Awesome . I was not sure if it is worth investing before buying. But after I tested it , it was phenomenal .
Also I would like to thank The Audio Store , they packaged this box so nicely , it has 4 to 5 level of protection, Also I was not expecting the case , it is cherry on the cake, I was bored of that low quality cases.
Thank You The Audio Store
You're the best
Good
To day it was delivered to me two days in advance to expected delivery. I fixed it to my 4.4mm balanced male of my FiiO FT 7 headphones It's performance is extraordinary. Thank you Ear Audio store for supplying good quality adopter. It's built quality is also very beautiful.






