Tanchjim presents the 4U, a meticulously crafted pair of single dynamic driver in-ear monitors. Featuring Tanchjim’s self-developed DMT4 Dual-Chamber dynamic driver unit, this model utilizes an LCP composite diaphragm for exceptional sound reproduction, delivering clear and crisp audio.
Customizable Sound with Adjustable Circuit Filter
The 4U comes equipped with a 4-level adjustable circuit filter system, allowing users to tailor the bass response to their preferences. This simple yet effective mechanism makes the 4U versatile, letting you customize the sound signature as per your liking.
High-Quality Composite Diaphragm
The composite diaphragm in the 4U is designed using FEA simulation technology, ensuring a balance of rigidity and flexibility. This results in a robust lower-end response and dynamic performance, enhancing your overall listening experience.
Powerful Magnetic Design
The Tanchjim 4U features a high-power magnetic structure that ensures easy driveability and a wide dynamic range. This design minimizes distortion in the output signal, packing a powerful audio performance in a sleek and compact form factor.
Optimized for Comfort
The 4U is designed with an optimized front-cavity structure, ensuring a comfortable fit without pressure buildup in the ear canal. The well-crafted nozzle fits perfectly, providing a pleasant and fatigue-free listening experience.
Elegant and Thoughtful Design
Inspired by the Gray Rabbit, the 4U boasts a smooth, mirror-finish design with a U-shaped ear shell. Made using a zinc alloy frosting technique, it offers a premium in-hand feel and a visually appealing aesthetic, blending style with functionality.
Driver Configuration: Dual Chamber DMT-4 LCP Diaphragm Dynamic Driver with 4-level adjustable circuit filter system (bass filter)
Impedance: 32Ω
Sensitivity: 122 dB/Vrms
Frequency Response Range: 8Hz-48kHz
Total Harmonics Distortion: <0,05%@1kHz, 94dB
Cable: Silver-Plated Copper (SPC) cable with 0.78mm 2-PIN connectors
Plug Type: straight gold plated 3.5mm TRS
Microphone: No
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
Tanchjim is a Chinese audio brand that specializes in developing high-quality audio products. They offer a wide range of products including earphones, DAC & AMP, and In-ear monitors (IEMS). Tanchjim's products are known for their exceptional sound quality and attention to detail, making them a popular choice among audiophiles.
They sound just amazing, I would say that the app a little rough to use. I can vouch they sound amazing. better than most of the tws which are out there in the market. Also, the Online dsp, gives a little edge it you want to tune them, and you can also upload your on DSP. Overall at this price point, It' a 10 on 10 deal.
MOONDROP SPACE TRAVEL 2 True Wireless Earbuds
08/22/2025
Roop
This is a compact amp that has a clear sound output which can be described as slightly warm
This is a compact amp that has a clear sound output which can be described as slightly warm. Vocals are clear and midst nice. Works straight out of the box. Balanced xlr input is a big plus. Overall it is good value for the price. Will recommend it to everyone
Fosi Audio ZA3 Balanced Stereo Amplifier Home Audio 2CH Mono Amp With TPA3255 Chip
08/22/2025
Pranav
Good product
Really a great product for the price offered using thebuds for the first time and it has exceeded my expectations. The sound is more balancednot a thumping bass but withclear vocals, treble and and a surrounding bass. Also there's someissue in connectivity which I faced at firstbut saw a tutorialon resolving the issue online.
MOONDROP SPACE TRAVEL 2 True Wireless Earbuds
08/22/2025
Anonymous
everything is great but would have been even better if.....
everything is great but would have been even better if it had a mic
Kiwi Ears Cadenza IEM
08/20/2025
Pradeep
Awesome case
Awesome case, providing safety
Shanling UP6 Bluetooth Wireless DAC & AMP Leather Case
08/19/2025
Sushant
It’s simply great upgrade from KZ
It’s simply great upgrade from KZ. best output at best price
KEFINE Klean IEM
08/18/2025
Aswath
Amazing
Had received in a day itself and it’s all that I had expected and more.
KZ AN01 ANC Enabled True Wireless Adapter for IEMs
08/16/2025
Nishar kadher
Very good sound and bass
Very good sound and bass . Clear vocal and instruments
7HZ x Crinacle Zero 2 IEM
08/14/2025
Abhijit Mondal
Fosi GR70 is an efficient amp and works well as a
Fosi GR70 is an efficient amp and works well as a preamp as well as a headphone amp. It drives my hd600 excellently.
Fosi Audio GR70 Tube Headphone Amp
08/13/2025
Elex Edward Khedia
Kz edx pro x
Amazing quality
Ordered 5 units and all were awesome
Thank you so much
Great part is that it got delivered very next day
KZ EDX Pro X Wired IEM With Mic
08/13/2025
akhil
Exceptional Sound with Balanced Bass
I’m genuinely impressed. The sound quality is exceptional—crisp highs, clear mids, and a bass response that’s just right. It doesn’t overpower the mids or muddy the overall sound, which is a rare balance to strike in this price range.
🎧 Sound Signature: Tuned to the Harman Target with a tasteful bass boost. It adds warmth without sacrificing clarity, making it perfect for everything from vocals to electronic music.
🔊 Bass: Not too high, not too low—just enough to give depth without distortion. It complements the mids beautifully.
🛠️ Build Quality: Solid and premium-feeling. The fit is comfortable for long sessions, and the mic is a handy addition for calls or gaming.
Overall, it’s a fantastic value for the price. If you’re looking for an IEM that delivers refined audio with a touch of bass and excellent build quality, this one’s a winner.
KZ Castor Pro IEM With Mic
08/12/2025
Kartik Savani
Best among its price range (My think best under 10K)
Best among its price range. I think it's best value for money till 15k. And best overall sound quality under 10k. It's complete package. This is my first purchase before this, I used Sony WF-1000XM4 earbuds. This is gonna kill to its value for that impressive sound quality.
SIMGOT EW300 IEM
08/11/2025
Nishayan
Good quality eartips
Good quality eartips. They are very comfortable!
AZLA SednaEarfit MAX Eartips For IEMs
08/09/2025
Ayush Mahajan
Affordable Audio Gem
"Amazing sound quality with clear vocals and deep bass. Very comfortable for long listening, and the build feels solid. Bought from The Audio Store – trusted, genuine, with GST billing. Easily the best choice in this price range!"
KZ EDC PRO Wired IEM With Mic
08/08/2025
STAY TUNED ON EVERY PLATFORM
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
Opens in a new window.
Anonymous
works great and sound quality
works great and sound quality, it's crisp and clear
KZ Acoustics EDX Pro Wired IEM With Mic
Deepankar
Great.
Fast delivery, great experience.
The Audio Store
Anonymous
Its my first time buying an iem and it sounds sooo good the design is good the wire can be improve
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.
TANCHJIM Bunny Type-C DSP Plug with Mic IEM
Samarth Kumar
Good
Good
KZ Castor Pro IEM With Mic
Aniket Dahiwal
Best in segment
This iem is best in segment ang long lasting wire compatibility ✨
KZ Dawn Wired IEM With Mic
Karthikeyan
Comfortable in ear
Comfortable in ear, very clear bass and treble. Ultimate combination with audiocular dac and everyone should try this and you will forget other brands earphones.
KZ Acoustics EDX Pro Wired IEM With Mic
Karthikeyan
Ultimate DAC under 1k
Ultimate DAC under 1k..
AUDIOCULAR SPARK Hi-Res Portable DAC Dongle CX31993 + MAX Amp
Aditya Girdhar
This was my first purchase from The Audio Store and I have to say the experience was excellent. Right from placing the order to the delivery (which was handled by Bluedart), everything went smoothly. I also had a few queries about IEMs in general, so I reached out to them on WhatsApp. The reply was quick, clear, and exactly what I was looking for. Really helpful! Overall, I’m very happy with the experience and would definitely recommend The Audio Store to anyone looking to buy IEMs or any other audio gear.
The Audio Store
Sameer
a must have for any audiophile.
They sound just amazing, I would say that the app a little rough to use. I can vouch they sound amazing. better than most of the tws which are out there in the market. Also, the Online dsp, gives a little edge it you want to tune them, and you can also upload your on DSP. Overall at this price point, It' a 10 on 10 deal.
MOONDROP SPACE TRAVEL 2 True Wireless Earbuds
TK
Worth Upgrade
Replaced standard issue 3.5mm plug with this. Sound quality has improved . Using it with Fosi Audio K7.
Quality of cable is also superb.
Thanks to TAS for a fast delivery.
EarAudio Premium Balanced Cable For Sennheiser HD 560S/ HD 620S/ HD 400S/ HD 599/ HD 559