Discover FiR Audio Project K – a revolutionary in-ear monitor (IEM) that redefines high-end personal audio. Built with over a decade of acoustic innovation, Project K stands as FiR Audio’s flagship creation—merging sonic brilliance with elite craftsmanship.
The Project K features a 5-driver hybrid configuration, including a powerful 9mm Kinetic Bass dynamic driver and four OpenDriver balanced armature drivers tuned to deliver immersive, true-to-life sound across the full frequency spectrum. With a frequency response of 20Hz–20kHz and 15 ohms impedance, it delivers effortless clarity, deep lows, and lush mids—ideal for audiophiles, musicians, and critical listeners alike.
Project K is engineered with precision-machined titanium shells for durability and resonance control. Its stunning blue copper faceplates topped with sapphire glass exude luxury while providing enhanced structural integrity. Inside, premium silver internal wiring ensures ultra-clean signal transmission with zero compromise.
ATOM Venting System with Gold + Xs modules (customization-ready)
Sapphire glass top – combines beauty with durability
Premium white leather case – designed for audiophiles on the go
4-core coaxial cable (1.6mm OD)
Silver-plated copper inner conductors (24 strands x 0.06)
Shielding: 80 strands x 0.06 silver-plated copper
Nickel-plated connectors for durability and signal integrity
With FiR Audio Project K, you're not just listening—you’re experiencing music at its most refined. Elevate your IEM collection with a flagship that delivers next-level sound, craftsmanship, and innovation.
Driver Configuration
1x 9mm Kinetic Bass Dynamic Driver
2x OpenDriver Balanced Armature Driver for mids
1x OpenDriver Balanced Armature Driver for high-mids
1x OpenDriver Balanced Armature Driver for highs (with Sound Reflector)
Technical Specifications
Frequency Range: 20-20kHz
Impedance: 15 ohms
Cable Specifications
4core, Coaxial Structure, OD:1.6mm
Inner Conductor: 24x0.06 Silver Plated Copper
Shielding: 80x0.06 Silver Plated Copper
Nickel Plated Hardware
Warranty Period: 1 Year from the date of Invoice
Covered: Manufacturing Defects Only
Warranty Form: https://www.theaudiostore.in/pages/warranty-claim-form
FiR Audio was founded in 2018 by two brothers, Bogdan and Alex Belonozhko and their friend Daniel Lifflander. Between them they have over 20 years of experience in designing and manufacturing some of the most advanced in-ear monitors while they were at 64 Audio. At FiR Audio, they are able to produce the next generation of IEM products, again pushing the boundaries of IEM technology.
In 2019 FiR Audio released the M-Series, their first line of In-Ear Monitors which gained considerable popularity from professional musicians and audiophiles all around the world. Featuring proprietary IEM technologies which all work together to provide the most natural and enjoyable listening experience. Including the ATOM venting system, Direct Aperture Acoustics, Tactile Bass, and the ultra-durable RCX connector. The M-Series showcased FiR Audio’s knowledge, expertise, and capabilities and cemented their reputation as a high-end in-ear monitor company.
Along the way, FiR Audio also tackled some of the biggest unsolved issues when it came to cleaning and maintaining in-ear monitors. This resulted in FiR Audio launching the IEM Vacs, followed later by the IEM Dryers. The perfect solution for audiophiles and monitor engineers who want to maintain their in-ears and keep them at peak performance at all times, also preventing repairs and down time.
Two years later, in 2021 FiR Audio released the Frontier Series, which includes the flagship Xenon 6, Krypton 5, and Neon 4 models. Packed with revolutionary technologies such as Kinetic Bass, a hybrid conduction technology which enables a very rich and natural bass, ATOM XS, the next generation ATOM module, Open Acoustics System, with Open Drivers that don’t use sound tubes, and Rigid Technologies that provide industry leading durability and serviceability of the IEMs. The Frontier Series comes in both Custom-Fit and Universal-Fit models.
Some online product selling giants didn't understand how to package product because it delegate and wants to handle with care and I really appreciate your customer support thank you great product delivery app in reasonable rate
It’s a neat dongle with crisp sounding music, it’s on a brighter side of music
one of the best earbuds in this price range.
As a beginner audiophile I did research on all budget IEMs but this KZ EDC Pro stood out in all reviews as best and most affordable no-nonsense IEM without distortion in sound output that drew my attention to it. And I am glad I made the choice, this deserves every bit of praise for the price & sound output better than my 5000INR TWS from reputed brands, a little bit EQ Tweaks just enhances the experience multifold... Must but for those who looking for affordable yet best sounding wired earphones/IEM. Brilliant build and sound quality for the price. A Must buy on a tight budget, and Thanks to audiostore for delivering package before scheduled delivery time.
Great DAC for the price in terms of build and aesthetic. When paired with a good IEM definitely makes the experience worth investing. Just go for it, must buy for a beginner/intermediate audiophile...!
Easy blind buy for the price. Most recommended set of iems if you're new to the iem community and are looking for something under 5000 rupees. Sounds clean and has a lot of customisation options with app support.
good sound and clear even without the dac and anything haven't tuned anything still clear sound!
After having owned a few kilo-buck IEMs, I was prepared to get something that was insane and probably endgame and rightly so Pritam sir recommended the FIR audio Xenon 6 and thus deep dived into this and I am sure this would be the end game IEM for me.
The XE6 is so wonderfully crafted looks like piece of jewelry and although a large IEM it is very comfortable for me for long sessions.
It sounded good from the start and was really different from the other IEMs. It started to sound even better and grew on to be the best I ever heard after listening to it for longer. I paired with Astell&Kern SP3000T and Hiby rs8 II and with desktop DAC Amps (FiiO K19, Topping D70. A70, Hifiman R2R and Xduoo TA 22) and the immersive, warm, musical and soundstage that filled my head all over. The sub bass is where it stands out the most, but the mids and highs are also so clear and crisp. I havent yet tried to change the atom modules as yet, I am sure this will make the XE6 even more great than that it already is.
The shells in the IEM I were crafted in the US (was crafted in China earlier, but as Trump wanted his MAGA force it had to be made in the US now)
This is definitely end game worthy!!!!
I’ve been using the Moondrop Chu 2 for around 5 months, and I’m really happy with them overall. The size is very good – small, lightweight, and comfortable for long sessions. They fit well in the ears and don’t feel bulky at all.
In terms of sound, they’re excellent for the price. Clear mids, detailed highs, and a balanced tuning that works great for vocals and instruments. They still feel solid and well-built even after months of daily use.
The only drawback is the bass – while it’s clean and controlled, it’s not very strong. If you’re looking for heavy bass, these might not fully satisfy you.
But if you want clarity, balance, and detail in a compact design, the Chu 2 are a fantastic choice.
Very good value for its price range,
Solid build, durable metal shells
Comfortable fit and decent ergonomics
Tuning flexibility thanks to interchangeable nozzles
Soundstage depth isn’t exceptional (though width / height are decent)
The black nozzle for brighter tuning is a bit aggressive.
This is my first IEM..so I'm not knowledgeable enough to decide if it's the best or not..but definitely a good buy..go for it guys..and don't forget to pair it up with a good dac....
I got these cables for my CHU II because I broke the stock cable.
For the following reasons I would say it's a solid recommendation for it's price.
The cables themselves are not as heavy as they might look and more importantly, they are not "stiff, ear hooks are also fairly comfortable.
Also, they don't particularly retain shapes and seem to be freer and tangle free.
The quality on the cables is good, it's been almost two weeks, and I haven't seen any quality issues come out.
The mic quality on calls is decent, very serviceable.
Don't expect upgrade cables to change the tonality of your IEMs.
These don't have a chin-slider, I would have loved to see that.
(THE COOLEST PART, they include a free hard case and tbf it's actually a good case better than some listed even for around 300INR out there)
Tuned like a blessing formy ears, Go for it
I use the moondrop free dsp mini with my hidizs mp145 planar iems and the response is amazing. Micro details are good mids are just right. The bass is tight. You'll love it.
After searching for around 7 days, I finally ordered these. I have received them just an hour ago. Will update the review in few days. Initial impressions are too 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
I own a mobile phone with only type, no headphone jack
I do like to comfort
But after reading everywhere that the dac and amp will change the listening experience, I decided to go ahead with the purchase
And afterIstarted using IEM with dan n amp , I cannot go back
This D07 has enough power to make thesound pleasant to my ears ,I doubt i will even considerbuying a more powerful amp
D07 is more than enough
Bought my very first IEM , and loving the kz castor pro ,bought 3.5mm jack version with a dac n amp
The experience is sublime
best seller
Audiocular packaging is premium always give a small pouch which can be very handy.Initially Right side was not working in my KZ Harman target Balanced version. Date Recd 7th Oct 2025! every thing is awesome Love Pritam for being Down to earth.I am going crazy at age 51 with this music world man
This thing is wild for the price. It's the ultimate budget champ if you're trying to get into good audio without breaking the bank. 😎
OK, sound check. It rocks a dual-chamber driver for a super balanced, chill vibe—easy listening, no fatigue. The mids and vocals are A+, straight up crystal clear and super detailed. The Type-C DSP bass is cleaner and mostly has a deep rumble. Not a bass-head set by default but so EQ if you want that boom-boom. The soundstage was way wider than expected. 😁
You can skip the standard plug for this one as the Type-C DSP is the MVP. It has a built-in DAC/Amp right in the cable, so skip the dongle and get high-res audio straight off your device. Plus, the Tanchjim app is really good and surprisingly more stable than others out in the market. Letting you customise the sound with a 5-band EQ and save presets. That level of control is insane for an IEM priced at this rage. 💪🏻
Comfort is 10/10. They're small, lightweight and look kinda minimalist in clear plastic. You get 6 pairs of ear tips and can customise as per your comfort and wear it all day. 😊
If you use a phone with a USB-C port and you wanna get good sound for cheap, just grab the Bunny. You won't regret it. ✌🏻
Allrounder iem
Got this today, and It's Awesome. Really recommend this IEM. I am a beginner and I find the whole experience user friendly. I has really great defauld sound . 100/10
Some online product selling giants didn't understand how to package product because it delegate and wants to handle with care and I really appreciate your customer support thank you great product delivery app in reasonable rate
It’s a neat dongle with crisp sounding music, it’s on a brighter side of music
one of the best earbuds in this price range.