Advanced Dual Driver Configuration
The Truthear x Crinacle ZERO RED IEM adopts a dual polyurethane suspension composite liquid-crystal dome diaphragm with an N52 Rubidium magnet double-cavity internal magnetic circuit dynamic driver. This innovative driver setup ensures superior audio performance and precision.
High-End 3D Printing Technology
Using DLP-3D printing technology, typically reserved for high-end multi-driver products and custom earphones, the ZERO RED features a hand-made glue-dropping and capping process. This meticulous manufacturing technique enhances both the aesthetic and acoustic properties of the earphones.
Superior Cable Quality
Equipped with a copper-plated silver cable of a thicker diameter for each strand, the ZERO RED ensures minimal signal loss and outstanding audio quality. This premium cable construction enhances durability and sound fidelity.
Efficient and Rational Driver Configuration
The ZERO RED houses a dual dynamic driver configuration, featuring a 10mm driver and a 7.8mm driver. The flexible polyurethane suspension composite LCP liquid crystal dome diaphragm and a mature internal magnetic circuit structure ensure the RED offers superior objective indicators compared to the standard ZERO model.
Innovative Frequency Division System
The 7.8mm dynamic driver, responsible for mids and treble, uses an ultra-fine CCAW voice coil, providing a lightweight vibration system and smooth frequency response. The 10mm dynamic driver, responsible for bass, features an adjusted diaphragm structure for improved nonlinear distortion and bass response, ensuring accurate sound reproduction.
Accurate Hybrid Double Frequency Division
Utilizing high-precision DLP-3D printing technology, the acoustic nozzle structure with filtering functions, and an accurately calculated RC frequency division form a hybrid double frequency division system. This system allows each dynamic driver to perform optimally, achieving the design goal of precise objective indicators.
Excellent Objective Indicators
The RED model's R&D target is based on TRUTHEAR's original ZERO model, with further optimization of nonlinear distortion at higher sound pressure levels (>94dB). The frequency response curve provides bass amplitude response similar to the public preference curve, while the CRINACLE IEF_Neutral curve is used for frequencies above 1000Hz, ensuring a balanced and natural sound.
Consistent Full-Frequency Phase
The ZERO RED's full-frequency phase is highly consistent, eliminating the phase distortion common in multi-driver earphones. This consistency ensures a natural listening experience without the unnatural effects caused by phase issues.
Next-Generation 3D Printing and Medical-Grade Resin
The ZERO RED features a DLP 3D printing cavity made by HeyGears, utilizing medical-grade high-transparency resin and an internal coloring process. This ensures high printing accuracy, efficiency, and a lightweight, skin-friendly, and reliable cavity.
Optimized Processing Technology
TRUTHEAR emphasizes both excellent objective measurements and processing technology optimization. The ZERO RED's sandwich-like cavity structure, combined with 3D printing, hand-made polishing, and automatic gloss painting, results in an exquisite and durable faceplate.
High-Quality Cable and Flexibility
The ZERO RED includes a four-strand high-quality silver-plated cable and a universal 0.78 2Pin interface, allowing for excellent sound quality and flexibility through cable changes.
Driver: 10mm+7.8mm Dynamic Driver
Diaphragm: Polyurethane Suspension LCP Liquid Crystal Composite Diaphragm
Impedance: 17.5Ω±15% @1KHz
Sensitivity: 117.5dB/Vrms @1KHz
THD: < 1%@1khz
Frequency Response Range: 20-40.5kHz (IEC61094, Free Field)
Effective Frequency Response Range: 20-20kHz (IEC60318-4, -3dB)
Microphone: No
Warranty Period: 1 Year
In The Box -
1. TRUTHEAR [ZERO:RED] * 1
2. Four Stands of High-quality Silver-plated Cable
3. Ear-tips * 3pairs (S, M, L) (Thick Diameter)
4. Ear-tips * 3pairs (S, M, L) (Thin Diameter)
5. Foam Ear-tips * 1pair (M)
6. 10Ω Impedance Adapter
7. Manual * 1
8. Warranty card * 1
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
TRUTHEAR, founded in 2022 and based in Shenzhen, specializes in high-performance in-ear monitors (IEMs). We provide authentic and accurate audio experiences for music enthusiasts, professionals, and artists. Our commitment is to deliver high-quality, cost-effective audio products, continually exploring advancements in the audio field.
Truthear x Crinacle ZERO:RED IEM
Truthear x Crinacle ZERO:RED IEM
Comfortable fit, good for long listening sessions.
Amazing Sound Quality
Outstanding sound quality, worth every penny
It provides Awesome sound quality go and buy it m
🎧 KZ Castor Pro IEM – Review
🔊 Sound Quality
The KZ Castor Pro delivers clear and detailed sound with excellent separation across lows, mids, and highs. The decent thumping bass is tight and controlled, giving energy to tracks without overwhelming the vocals or instruments. Its super-balanced tuning ensures a natural, enjoyable listening experience suitable for all genres.
🎚 Unique DIP Switch Equalizer
What sets the Castor Pro apart is its DIP switch physical equalizer. With up to 16 different tuning options, it allows listeners to adjust the sound profile on the go—boosting bass, enhancing treble, or keeping it neutral. This feature gives it a level of flexibility rarely seen in IEMs at this price point.
🔇 Noise Isolation
Although it lacks active noise cancellation, the design offers an excellent passive seal. The snug fit ensures that outside noise is effectively blocked, making the listening experience immersive and ensuring ANC doesn’t feel like a missing feature.
🎼 Hi-Res & DAC Performance
For those using Hi-Res lossless audio, pairing the Castor Pro with a DAC is highly recommended. The extra power and clarity from a DAC enhance the already impressive soundstage, detail retrieval, and overall dynamics, making the listening experience truly premium.
💰 Value for Money
At its smart price, the KZ Castor Pro punches well above its weight. It combines detailed sound, punchy bass, balanced tuning, and innovative features—making it a strong choice for both audiophiles on a budget and everyday music lovers.
Have been using these buds for like an year now, they gave me a great time all that while, only recently the cable started getting green and there was an issue with audio drop on even a slight movement (like every earphone ever), but still a great investment for an year.
Got this as my first iem from audio store.. much much more worth than the price.. the bass!!.. my gawddd, it's something which is gonna surprise you.. I got it paired with the moondrop echo a dac.. and trust me, couldn't have asked for anything better.. and the delivery was done to me in kolkata, just within a day.. remarkable job audio store!♥️
Loved the new gear they sound absolutely phenomenal and mind if say the looks and aesthetic of the KZ Castor Pro is underrated for its price, as a newbie I was a little hesitant to jump in this rabbit hole, but it was worth it. Shoutout to The Audio Store to build up my courage, they were very helpful as I was placing my order I fumbled and they responded very positively and helped me correct my mistake. Thank You
Excellent performance with ANC good mic this song is like heaven
Perfect for beginners to start their audiofile journey
I'm satisfied and convinced of this product
The packaging
The quality
And The performance
Trust he go for this one if you never try this one
Just give it a try you will not regret it
I have manny IEM's I'm my collection
But this one is really fantastic
Thanks to The Audio Store
They have many discount in compar to others in market
And shippment is on the time no worrys
1999 is nothing the engineering is perfect of this IEM,,,
Amzing product
Love the way it sounds rich in every range perfect for beginners but if you're not a bass head go for non bass varient.
This is my first ever IEM that I purchased after research of couple of months. And I can say that this was a good decision on my end. Cable is good. Buds look stylish. Comes with a small carry pouch and 6 pairs of ear tips. Sound quality is awesome. Love the instrument separation. Customisable EQ gives them versatility. You can actually experience how other IEM sound just be playing around with the EQ.
Actually, l'm new to this IEM world. Such an amazing product. If you are new to iem just as me, I would highly recommend his product to try out. The OG. There are 16 types of tuning options to play around and explore your favourite music in a new way and the build quality is also pretty good. Overall a nice product 👍.
Good sound
5/5 Mids and Highs
5/5 Well balanced Bass, doesn't overpower the music
5/5 Design look premium and classy
They are quiet heavy and huge
Its my first time buying an iem and it sounds sooo good the design is good the wire can be improve, the bass is somewhat missing and the app has some glitches regarding equalizer. Otherwise this iem is better than my tws. I really like it.
Good
Brand Warranty
100% Original products with brand warranty
7 Days Replacement
On all orders*
Fast & Free Shipping
Ships in 24 Hours*
Secure Payments
Visa, Mastercard, EMI, Net Banking, UPI, BHIM, Wallet's
It provides Awesome sound quality go and buy it m
🎧 KZ Castor Pro IEM – Review
🔊 Sound Quality
The KZ Castor Pro delivers clear and detailed sound with excellent separation across lows, mids, and highs. The decent thumping bass is tight and controlled, giving energy to tracks without overwhelming the vocals or instruments. Its super-balanced tuning ensures a natural, enjoyable listening experience suitable for all genres.
🎚 Unique DIP Switch Equalizer
What sets the Castor Pro apart is its DIP switch physical equalizer. With up to 16 different tuning options, it allows listeners to adjust the sound profile on the go—boosting bass, enhancing treble, or keeping it neutral. This feature gives it a level of flexibility rarely seen in IEMs at this price point.
🔇 Noise Isolation
Although it lacks active noise cancellation, the design offers an excellent passive seal. The snug fit ensures that outside noise is effectively blocked, making the listening experience immersive and ensuring ANC doesn’t feel like a missing feature.
🎼 Hi-Res & DAC Performance
For those using Hi-Res lossless audio, pairing the Castor Pro with a DAC is highly recommended. The extra power and clarity from a DAC enhance the already impressive soundstage, detail retrieval, and overall dynamics, making the listening experience truly premium.
💰 Value for Money
At its smart price, the KZ Castor Pro punches well above its weight. It combines detailed sound, punchy bass, balanced tuning, and innovative features—making it a strong choice for both audiophiles on a budget and everyday music lovers.
This DAC is performing quite well. No heating or white noise issues for me. I am using it with EDC Pro and Castor Pro Harman Target and noticing a good significant upgrade in overall frequency range. I am loving this DAC so far. Build quality is also good at this price range, let's see how long it lasts.
I ordered my first pair of IEM's through The Audio Store and the service was great. Got my package within 5 days and had some questions and their customer care is really active and I got all my queries solved. Great experience overall and I have already recommended Audio Store to my friends.
Went thorough tons of online reviews for a purchase of Desktop DAC+AMP. FOSI K7 was kickstarter but reviews about it was fantastic.
Grabbed it without Blinking twice from TAS. As usual it was a next day delivery.
Fosi delivers crystal clear sound both on Headphones and IEM . Driving power of it crazy.
No doubt it reached my expectations ! The sound quality is really good and gaming experience is also good ! If convenience doesn't matter and sound quality is your priority, you can choose this, it's all rounder IEMs !
Excellent sound
Have been using these buds for like an year now, they gave me a great time all that while, only recently the cable started getting green and there was an issue with audio drop on even a slight movement (like every earphone ever), but still a great investment for an year.
Its geat, the build quality is nice, the wire is preety hard.And quality is sick
Great IEMs