TAS Commitment
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
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 50K+ MUSIC ENTHUSIASTS
Let customers speak for us
from 6418 reviews
At the price, can't complain.
Perfect sturdy piece to carry(not in pockets) anywhere
Truthear Hexa fits perfectly.
DAC sounds perfect when you connect it with laptop or PC
has a less sound when you play with Smartphone.
Other than this the IEMs are great
Great fit to ears
This DAC is awesome and a perfect value addition to my IEM. It enhances the quality of the audio and make it a bit loader as well. Buying and its a must have accessory for the audiophiles.
Powerful, stylish, worth the price, good mic quality, the best in the range!
Powerful performance with good looks
I like the simple design without any text. The material is good. The size is perfect for carrying DAC - IEM - any other accessory.
Very easy to carry in sleek silicon pouch that you get with the iem.
I dont use it to listen to music but for teams and zoom calls in office .very handy
Using this balanced cable with my fiio k11 r2r to drive headphones like edition XS
Such a great one on this price range. Highly recommend if the budget is 4-5k
I have not expected this great audio quality but after hearing the sound this is fabulous and no words to express.
Great product in this price range.
i would say it is best for who likes music and vocal not for the base lover.
Best quality and enhance sound volume compare to one plus and iphone type c converter
Love these, u shaped sound signature but pains my ears after 2 hours of listening.
The IEM's have a decent balanced V shaped profile & the manual EQ settings are quite useful.
After my first pair, the Oriveti OD200 (which I loved!), I grabbed the Martilo as my second set, and wow, I finally get what people mean by basshead. Guys, these are unreal. If you listen to music that's supposed to really H-I-T, this is the one for you.
Sound Breakdown
The Bass is the star: It literally shakes my eardrums. We're talking deep, physical sub-bass rumble, not the muddy, boomy kind. It feels like having a huge subwoofer in your head. It hits hard but stays clean and super fast, which is critical.
Mids are surprisingly clear: I was worried the bass would swallow up the vocals (Mids), but they stay right up front. My favorite singers sound crisp! You get great separation, letting you pick out instruments even when the bass is going crazy.
Treble is sparkly and quick: I think the planar driver is what makes the high notes (Treble) sound so detailed. It adds enough "air" to the sound and keeps the whole picture from feeling dark.
The design is awesome, they look like cracked lava rock, and they are pretty comfortable even though they look a bit chunky.
Only 1 downside for me was the eartips, it could be more comfortable given the price tag of this IEMs. I'm using stock eartips of my another IEMs (Oriveti OD 200) which is surprisingly comfortable.
Final Takeaway
If you are moving up from entry-level and want to know what truly clean, hard-hitting bass sounds like, get these. It’s an easy, near-endgame fun set for people who love bass-heavy genres like EDM and Hip-Hop. Go listen to them!






