Truthear x Crinacle ZERO:BLUE2 IEM – Dual Dynamic Drivers, Refined to Perfection
Experience the evolution of precision audio with the Truthear x Crinacle ZERO:BLUE2 – an in-ear monitor crafted for audiophiles who demand accuracy, clarity, and balance across the frequency spectrum. This second-generation collaboration with Crinacle builds upon the legacy of the original ZERO, offering significant upgrades in driver architecture, frequency response, and overall sound performance.
Dual Dynamic Drivers with Upgraded Architecture
The ZERO:BLUE2 features an advanced dual-dynamic driver system with a 10mm solid silicone suspension LCP dome (N52 magnet) for deep bass and a newly refined 7.8mm polyurethane suspension LCP dome (N55 magnet) for crisp mids and detailed highs. This dual-cavity magnetic circuit design achieves a remarkable increase in sensitivity and upper-frequency resolution, allowing you to hear subtle recording details with lifelike accuracy.
Optimized Frequency Crossover & Tuning
Engineered with a hybrid multi-frequency crossover and low-distortion circuitry, ZERO:BLUE2 ensures smooth transitions between frequency ranges. The filtered nozzle, manufactured with HeyGears’ precision DLP 3D-printing, enhances acoustic performance while supporting a well-balanced soundstage. Expect punchier bass, transparent mids, and extended treble response with outstanding clarity.
With a 25% larger magnet and 50% larger dome on the 7.8mm driver, ZERO:BLUE2 achieves higher conversion efficiency and superior high-frequency sensitivity. Objective measurements show reduced nonlinear distortion and a more accurate frequency curve aligned with human hearing (HRTF), resulting in vivid sound reproduction and a natural listening experience free from phase distortions.
Durable, Lightweight Shell with Ergonomic Comfort
Built using high-end 3D-DLP printing technology, the shell is lightweight yet robust, with a redesigned faceplate and improved nozzle geometry for better fit and comfort. The skin-friendly cavity ensures fatigue-free listening, even during extended use.
Upgraded Silver-Plated Cable with Optional Mic
ZERO:BLUE2 includes a premium silver-plated copper coaxial cable with a 0.78mm 2-pin connection, offering better durability and improved conductivity. The bundled version also includes a high-quality oxygen-free copper microphone cable, perfect for gaming, calls, and live monitoring, delivering versatility without compromising audio fidelity.
Why Choose the Truthear ZERO:BLUE2?
Dual-dynamic driver system for ultra-precise sound
Enhanced high-frequency resolution with upgraded 7.8mm driver
Punchy bass and clean mids from improved 10mm driver
Advanced crossover and low-distortion tuning
Comfortable, skin-friendly 3D-printed shell
Detachable upgraded cable with optional mic
Tuned in collaboration with Crinacle for reference-grade accuracy
Whether you're a music enthusiast, gamer, or studio monitor user, the Truthear x Crinacle ZERO:BLUE2 delivers a reference-quality sound experience that rivals IEMs in much higher price brackets.
Frequency Response Range: 20-41kHz (IEC61094, Free Field)
Effective Frequency Response Range: 20-20kHz (IEC60318-4, -3dB)
Package List
1. TRUTHEAR [ZERO:BLUE2] * 1
2. 3.5mm Standard Cable * 1
3. 3.5mm Mic Cable * 1 (Optional)
4. Eartips * 3 Pairs (S, M, L)
5. Foam Eartips * 3 Pairs (M)
6. Foam Eartips * 1 Pair (S)
7. 5Ω Impedance Adapter* 1
8. User Manual * 1
9. Warranty Card * 1
10. Anime 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.
Bright-sounding with good bass and treble. Silicone tips can feel harsh for some. Indian instruments sound very good with silicone tips, though. Foam tips minimize harsh sound, and bass is reduced too. Overall happy with purchase.
B
Biswaranjan Biswakarma (Bengaluru)
With Mic
best all rounder for the price
best all rounder for the price, good for gaming and music
Such a great one on this price range. Highly recommend if the budget is 4-5k
KEFINE Klean IEM
11/08/2025
Balakrishna Badveli
Worth every rupee you spend on this product
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.
ROSESELSA AURORA Ultra IEM
11/06/2025
Jigar Patel
Balanced audio
i would say it is best for who likes music and vocal not for the base lover.
KZ EDX Pro X Wired IEM With Mic
11/06/2025
Divesh sutar
Best quality and enhance sound volume compare to
Best quality and enhance sound volume compare to one plus and iphone type c converter
AUDIOCULAR SPARK Hi-Res Portable DAC Dongle CX31993 + MAX Amp
11/05/2025
Anonymous
Real good iems
Love these, u shaped sound signature but pains my ears after 2 hours of listening.
Dunu Titan S2 IEM
11/03/2025
Anonymous
The IEM's have a decent balanced V shaped profile & the manual EQ settings are quite useful
The IEM's have a decent balanced V shaped profile & the manual EQ settings are quite useful.
AUDIOCULAR X KZ Castor Pro X Type-C IEM With Mic
11/03/2025
Sagarpatel
If you listen to music that's supposed to really H-I-T, this is the one for you.
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!
Punch Audio Martilo IEM
11/01/2025
Joseph Chandy
Bang for the buck DAC if you need extra power over the apple dongle
Works great for any iem out there. I previously only religiously bought apple dongles as my got-to portable dac. Only later I found the audiocular spark which had the CX31993+ Max amp and provided slightly more power. It works exactly like it says and gives 1.4 v vs the 1 v of the apple dongle. So if some extra power is what you’re looking for, the audiocular spark is what you need. This is going to power all your iem needs.
AUDIOCULAR SPARK Hi-Res Portable DAC Dongle CX31993 + MAX Amp
10/30/2025
Prakarsha Xx
Really smooth sound
I love these iem’s . This is end game iem for me since expensive ones have diminishing returns
I really like audiostore delivery
ZiiGaat x Hangout Audio Odyssey 2 IEM
10/29/2025
Anonymous
Awesome purchase
Awesome purchase. The KZ Castor Pro Harman Bass Tuned is a dream for audiophiles which will make them enjoy the nuances of every genre of music. Loved it. Wow.
KZ Castor Pro IEM With Mic
10/29/2025
Karun S
Spectacular DAC
Spectacular DAC, boosts the audio well. Great music experience.
AUDIOCULAR SPARK Hi-Res Portable DAC Dongle CX31993 + MAX Amp
10/28/2025
Yuvraj Preet Singh
Just one word - AMAZING!
TL;DR:
Finally jumped into the IEM world with the Bunny and I am blown away. Super clear highs with zero harshness, smooth vocals, and punchy bass. Works great across all genres I listen to, super comfy, and keeps getting better over time. Only downsides: cable’s a bit short but that is subjective and movie audio can be hit or miss. Overall, I’m honestly blown away by how good these sound for the price.
I have been contemplating getting into the IEM world for the past few years and when I finally pulled the trigger on this one, it just blew me away and I am not even exaggerating. Before getting these I was using OneOdio Headphones that I got for 4k that I still love but, well, when I got the Bunny's I was like, is this what have I been missing out on ?!?!
This long contemplation for getting an "IEM" was also because of conflicting reviews about some of them like some having high sibilance or thin sounding bass or something else and I couldn't make up my mind to get one or the other. I'll be honest, I was kind of scared if I might not like these or I might find them too sibilant as I am pretty sensitive to that, and I was already expecting the bass to be less than what I am used to before hitting the play button. All of my worries went away as soon as the music started, the highs and vocals were absolutely clear and bass hitting just right. I did try tip rolling to see which eartip gave the best seal. I don't know if burn-in is real or not, but it has been a month since I got them and they have just kept getting better and better.
I listen to a lot of DnB, Experimental or other EDM subgenres along with Jazz, Orchestral, Movie scores and songs with vocal etc and they work for all the genres in such a nice way! I'm seriously trying out new genres at this point because everything sounds so fun with them. The vocals are so smooth and just the right amount of sparkly and the bass either the sub or mid is not at all lacking by any chance. I won't be able to talk much about the soundstage but if I say so, listening to Yosi Horikawa, Snarky Puppy, Tipper is an absolute fun in these. Everything just sounds like it is there as it should be. Separation is great compared to my headphones. I am indeed hearing things that I haven't before but that might also be because of the bass not muddying everything up.
They are small so they fit me like a glove (subjective but still) and are so comfortable to wear for a long session or even while lying down. I just wish the cable were a little longer but its still fine. The included bag is pretty handy and the included tips have a pretty good selection to get a good fit.
I'm definitely getting a DAC and maybe in the future a Balanced cable just to see how much can these be pushed and what sound these can deliver.
The only few things I'd say is that watching movies or shows could be a hit or a miss with these because of the way they might be mixed/mastered and as these being balanced they don't hold back on any frequency or muddy up the other. The other day I tried to watch Chris Nolan's Tenet with this, but the gunshots were a little too harsh or the voice was too low to hear properly but Ford vs Ferrari, Mission Impossible or Star Wars were very fun to watch. Might be a subjective opinion but I thought I'll add it. The other thing is that I thought these would be good for making music as I do that for hobby but I still have to test them out more in that scenario.
TANCHJIM Bunny IEM With Mic - 3.5mm
10/28/2025
Siddharghya Haldar
Powerful DAC and Amp combo
It is very efficient and clean sounding. I loved the amplification which is enough to drive demanding planar magnetic headphones. The functions and display is very intuitive. Overall a very good product.
SMSL RAW-MDA 1 Desktop DAC & Headphone Amplifier
10/26/2025
Aditya Joshi
A goodpurchase awesome improvement in the bass
A goodpurchase awesome improvement in the bass with no extra noise!
AUDIOCULAR SPARK Hi-Res Portable DAC Dongle CX31993 + MAX Amp
10/25/2025
Anonymous
It is really good for the
It is really good for the price
AUDIOCULAR D07 CX31993 USB Portable DAC & Amp
10/25/2025
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Padmapriyan
Underated
Such a great one on this price range. Highly recommend if the budget is 4-5k
KEFINE Klean IEM
Harish Nair
Best money spend on any IEM wired
Best money spend on-any IEM
KZ EDX Pro X Wired IEM With Mic
Hitesh Tejwani
This DAC is so helpful
This DAC is so helpful, using it for my iPad and I can honestly see a huge difference.
AUDIOCULAR D07 CX31993 USB Portable DAC & Amp
Chakra
They are good
They are good. I am using for my mmondrop 3. Thank you.
Moondrop Spring Soft Silicone Eartips
Anonymous
Good product ♥️
Microphone' s voice quality is little bad. But the sound quality is really awesome. I bought this product especially for gaming purpose, but it is also great for gaming and listening songs.This is my opinion only. So if you thinks to buy this product ,check others reviews also.
Thankyou
7HZ Salnotes Zero Type-C Plug with Mic IEM
Deepak Sai
My overall experiencehas been very good
My overall experiencehas been very good. Will highly recommend.
The Audio Store
Deepak Sai
Solid build quality
Solid build quality.
EarAudio In-Ear Monitors (IEM), Earphones Carry Case
Deepak Sai
Solid performance and complete value value for money
Solid performance and complete value value for money. Recommended budget IEM with DSP
TANCHJIM Bunny Type-C DSP Plug with Mic IEM
Balakrishna Badveli
Worth every rupee you spend on this product
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.
ROSESELSA AURORA Ultra IEM
Jigar Patel
Balanced audio
i would say it is best for who likes music and vocal not for the base lover.