Description
7HZ x Crinacle Zero:2 - Elevating Audio Excellence
7HZ Legacy Continues:
Building upon the global success of models like the Salnotes Zero, Dioko, and Timeless, 7HZ has solidified its reputation as a leading manufacturer of high-performance IEMs. The 7HZ x Crinacle Zero:2 represents a continuation of this legacy, promising not just innovation but an enriched community experience.
The Historic Collaboration:
The collaboration between 7HZ and Crinacle, marked by the original Zero, has made history in the budget IEM market. Crinacle, renowned for transforming the audio market with his frequency graph database, brings his expertise to refine the Zero:2. This updated model, a testament to their combined efforts, aims for the pinnacle of tonal balance and performance.
Balanced Upgrade with Enhanced Bass:
While the original Zero boasted an exemplary tonal balance, the Zero:2 introduces a 3dB boost in low frequencies. This enhancement doesn't compromise the existing balance but rather injects life into the sound, delivering a more powerful and engaging bass presence. The midrange, too, sees improvement in body and warmth, ensuring instrument and vocal frequencies are richer without sacrificing clarity.
The Power of the 10mm Dynamic Driver:
At the heart of the Zero:2's sonic prowess is a newly developed 10mm dual cavity dynamic driver. Featuring an upgraded PU+Metal composite diaphragm, this driver ensures a more responsive experience with faster diaphragm movement. The result is a blend of harder-hitting bass and precise note articulation, noticeable across the expanded frequency range of 10Hz to 20kHz.
Revamped Cable for Uncompromised Transmission:
Complementing the enhanced sound experience is the Zero:2's upgraded custom cable. Crafted from high-purity oxygen-free copper with silver plating, the coaxial structure ensures optimal audio transmission. Woven with 140.06 and 250.06 winding, the cable not only reinforces durability but allows for customization, empowering users to tailor their listening experience.
Frequency response range: 10HZ-20KHz
Impedance: 32 ohms
Total Harmonic Distortion (THD): <1% at 1KHz
Driver: 10mm dynamic driver
Cable Interface: 3.5mm
Plug Type: Detachable 0.78mm 2Pin
Warranty Period: 1 Year
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
7Hz Audio is a leading audio brand from China, renowned for producing high-quality in-ear monitors at affordable prices. With excellent sound and sleek design, their IEMs offer an exceptional audio experience. Shop 7Hz Audio IEMs at The Audio Store and enjoy superior sound quality without breaking the bank!
7HZ x Crinacle Zero 2 IEM
The sound is exactly what I preffered, great IEM for the price. And Audio store packaging was lovely !
Sounds exactly like the Salnotes Zero with a bit more bass. Has that same Harman curve with upper midrange bump and reduced lower mids making male vocals sound thin. Good resolution/detail and treble is perfectly done. Fit is good and I like that these are very light.
Enough BASS, Treble not harsh. Smooth cable. Also, actually I've Tangzu Warner in my opinion, but i selected this. Satisfied with this IEM. Delivery was fast! Thank you TAS!!!!!
It has a satisfying amount of bass
Crispy treble region and clean sound signature
Comfortable fit
Pair it with a good DAC and see the magic happen!!
Must have IEM!!
I've been an unabashed (quality) basshead - love my Sony XM4 cans and buds. Started dabbling with IEM with FiiO JD1, followed by CCA Trio. Since I listen a lot to bass-heavy genres like EDM and Deep House, I was pretty impressed with JD1 and Trio. I was looking to add a 'balanced' IEM to my garage which didn't sound bland/flat. So I took a (safe) bet with 7Hz Salnotes Zero 2. Out of the box, I got plenty of clarity across mids and highs with superb seperation across the spectrum.
But now that I've burnt in the Zero 2 with 50+ hours playback, the sound signature has noticeably improved especially in the lows. I never thought I'll say this, but I have started going to the Zero 2 over the CCA Trio even for Deep House - the clear bass is punchy, but it never overpowers the mids and highs. The vocals are clear and the highs are bright without fatigue or sibilance.
Couple of points on ergonomics - while the build seems flimsy at first impression, let me assure you that everything - from the wires to the IEM - comes together perfectly to offer a comfortable package for long listening hours. In fact this is a very comfortable IEM to roll over pillows and sleep with your music. Also, coming from the high standards of Sony ANC, I am very impressed with the noise insulation that this IEM fit provides.
Bottomline - Zero 2 is a blind buy. Whatever your stage in the audiophile, this one is a must have in your audio gear garage.

Description
7HZ x Crinacle Zero:2 - Elevating Audio Excellence
7HZ Legacy Continues:
Building upon the global success of models like the Salnotes Zero, Dioko, and Timeless, 7HZ has solidified its reputation as a leading manufacturer of high-performance IEMs. The 7HZ x Crinacle Zero:2 represents a continuation of this legacy, promising not just innovation but an enriched community experience.
The Historic Collaboration:
The collaboration between 7HZ and Crinacle, marked by the original Zero, has made history in the budget IEM market. Crinacle, renowned for transforming the audio market with his frequency graph database, brings his expertise to refine the Zero:2. This updated model, a testament to their combined efforts, aims for the pinnacle of tonal balance and performance.
Balanced Upgrade with Enhanced Bass:
While the original Zero boasted an exemplary tonal balance, the Zero:2 introduces a 3dB boost in low frequencies. This enhancement doesn't compromise the existing balance but rather injects life into the sound, delivering a more powerful and engaging bass presence. The midrange, too, sees improvement in body and warmth, ensuring instrument and vocal frequencies are richer without sacrificing clarity.
The Power of the 10mm Dynamic Driver:
At the heart of the Zero:2's sonic prowess is a newly developed 10mm dual cavity dynamic driver. Featuring an upgraded PU+Metal composite diaphragm, this driver ensures a more responsive experience with faster diaphragm movement. The result is a blend of harder-hitting bass and precise note articulation, noticeable across the expanded frequency range of 10Hz to 20kHz.
Revamped Cable for Uncompromised Transmission:
Complementing the enhanced sound experience is the Zero:2's upgraded custom cable. Crafted from high-purity oxygen-free copper with silver plating, the coaxial structure ensures optimal audio transmission. Woven with 140.06 and 250.06 winding, the cable not only reinforces durability but allows for customization, empowering users to tailor their listening experience.
Frequency response range: 10HZ-20KHz
Impedance: 32 ohms
Total Harmonic Distortion (THD): <1% at 1KHz
Driver: 10mm dynamic driver
Cable Interface: 3.5mm
Plug Type: Detachable 0.78mm 2Pin
Warranty Period: 1 Year
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
7Hz Audio is a leading audio brand from China, renowned for producing high-quality in-ear monitors at affordable prices. With excellent sound and sleek design, their IEMs offer an exceptional audio experience. Shop 7Hz Audio IEMs at The Audio Store and enjoy superior sound quality without breaking the bank!
7HZ x Crinacle Zero 2 IEM
The sound is exactly what I preffered, great IEM for the price. And Audio store packaging was lovely !
Sounds exactly like the Salnotes Zero with a bit more bass. Has that same Harman curve with upper midrange bump and reduced lower mids making male vocals sound thin. Good resolution/detail and treble is perfectly done. Fit is good and I like that these are very light.
Enough BASS, Treble not harsh. Smooth cable. Also, actually I've Tangzu Warner in my opinion, but i selected this. Satisfied with this IEM. Delivery was fast! Thank you TAS!!!!!
It has a satisfying amount of bass
Crispy treble region and clean sound signature
Comfortable fit
Pair it with a good DAC and see the magic happen!!
Must have IEM!!
I've been an unabashed (quality) basshead - love my Sony XM4 cans and buds. Started dabbling with IEM with FiiO JD1, followed by CCA Trio. Since I listen a lot to bass-heavy genres like EDM and Deep House, I was pretty impressed with JD1 and Trio. I was looking to add a 'balanced' IEM to my garage which didn't sound bland/flat. So I took a (safe) bet with 7Hz Salnotes Zero 2. Out of the box, I got plenty of clarity across mids and highs with superb seperation across the spectrum.
But now that I've burnt in the Zero 2 with 50+ hours playback, the sound signature has noticeably improved especially in the lows. I never thought I'll say this, but I have started going to the Zero 2 over the CCA Trio even for Deep House - the clear bass is punchy, but it never overpowers the mids and highs. The vocals are clear and the highs are bright without fatigue or sibilance.
Couple of points on ergonomics - while the build seems flimsy at first impression, let me assure you that everything - from the wires to the IEM - comes together perfectly to offer a comfortable package for long listening hours. In fact this is a very comfortable IEM to roll over pillows and sleep with your music. Also, coming from the high standards of Sony ANC, I am very impressed with the noise insulation that this IEM fit provides.
Bottomline - Zero 2 is a blind buy. Whatever your stage in the audiophile, this one is a must have in your audio gear garage.
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Let customers speak for us
from 4874 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.