TANCHJIM ONE
10MM DYNAMIC DRIVER IN-EAR EARPHONES
- Medical-Grade High-Transparency PC Material with Aluminum Alloy Cavity
- Flagship Dynamic Driver Unit
- Ultra-Smooth Surface Design and Low THD
- High-Performance Audio Decoder for DSP Tuning
- Ergonomic Wearing Design
- Impeccable cable and microphone quality
- Built-in High-Performance DSP Audio Decoding Chip
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Estimated Delivery:Oct 18 - Oct 22
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Free Standard Shipping & Returns On all orders. Check if your country applies.

TANCHJIM ONE
Medical-Grade High-Transparency PC Material with Aluminum Alloy Cavity
TANCHJIM ONE is crafted with Medical-Grade High-Transparency PC Material and an Aluminum Alloy Cavity. The high-transparency shell combined with the aluminum alloy rear cavity enhances the overall aesthetics of the product, giving it a minimalist, fresh, and compact appearance. The rounded design at the edges further improves the tactile experience and adds a touch of softness to the product. Tailored for precise low-frequency control, allowing the bass to dive deeper, be more elastic, and not just a mere vibration of the entire sound field. Instead, it delivers a clear outline and pulsating sensation of the bass.
Flagship Dynamic Driver Unit
Featuring a combination of metal ball-tops and PU & PEEK composite material for the diaphragm, the earphones achieve a wider dynamic range and significantly reduce distortion, resulting in more solid imaging and positioning. Every piece of music is presented like a captivating story, creating an immersive audio experience.
Ultra-Smooth Surface Design
The extremely smooth surface design minimizes high-frequency acoustic damping on the inner walls of the sound cavity, effectively controlling sound scattering, improving sound transmission efficiency, and enhancing acoustic performance. This results in a more supple and linear rendition of the extreme high frequencies, with exceptional extension, clarity, and smoothness.
High-Performance Audio Decoder for DSP Tuning
TANCHJIM has optimized the professional tuning with consideration for market preferences. The ONE-DSP version utilizes a high-performance audio decoder for DSP tuning, featuring a smooth perception of the extreme high frequencies, well-controlled midrange, and enhanced low-frequency extension, all in line with TANCHJIM's target frequency response curve. Both the version with and without a microphone are designed to closely match the HARMAN 2019 target frequency response curve, comparable to flagship-level objective standards. The balanced three-frequency response is tuned to satisfy the majority of listeners' preferences, ensuring both monitoring accuracy and an enjoyable, long-lasting listening experience.
Ergonomic Wearing Design
Angled Straight-In Wearing Style, Coupled with Angled Sound Outlet, Ergonomic Design, and Precision Ear Canal Fit for Easy Plug-and-Play Convenience; while the Over-the-Ear Wearing Style is more suitable for audiophiles' wearing habits, with an ergonomic design that precisely matches the contour of the ear. The comfortable listening experience is beyond words.
Impeccable cable and microphone quality
With a 0.78mm detachable cable design, the cable is flexible, effectively preventing tangling and resisting pulling forces. The cable sheath is made of inert material, ensuring a smooth texture that doesn't knot easily. Just a shake, and it unravels effortlessly, while also improving the current transmission rate. The high-definition call microphone supports in-line control, fully meeting your daily needs.
Built-in High-Performance DSP Audio Decoding Chip
The chip inside the TYPE-C connector of the earphone features two channels of 24-bit high-performance DAC supporting 44.1kHz, 48kHz, and 96kHz sampling rate output. It includes a high-performance miniature earphone amplifier and a low-noise microphone circuit. The microphone recording even adopts a 24-bit 96kHz high-spec input. In addition, the rational application of DSP technology contributes to the exceptional audio quality experience of ONE-DSP. (Currently, ONE-DSP is being integrated with the TANCHJIM APP for tuning. Once the integration is complete, it will be available for tuning via the APP, just like ZERO-DSP.)
Free Standard Shipping
We Offer FREE Standard Shipping on all orders to Most of the World*
1 Year Warranty
Your Headphones, IEM's, AMPs and DACs, are covered by a warranty against factory defects.
Authentic Products
HiFiXAudio is an official distributor of the brands we carry. All products are genuine.
FAQ's
How long does it take to process an order?
For in-stock products, your order is expected to be shipped within 3 working days. Customized items and pre-orders take a longer time (do check in with our staff for more information). On normal non-sale days, once your parcel is shipped:
- For Standard Shipping, it takes about 2-3 weeks for items to be delivered after it is shipped. For some countries, it might take up to 1-2 months, depending on your country and its custom procedure. The duration for transit is beyond our control. Mechlands does not arrange refunds for such cases. Please consider an upgrade to DHL Express or keep the waiting time in mind.
- For Express Shipping, it takes about 3-10 days for items to be delivered after it is shipped.
Note:
Shipping methods and period might be affected and changed due to festive seasons, pandemic circumstances or other unforeseen circumstances.
What kind of shipping do you offer?
We have two shipping methods - Standard Shipping and Express Shipping.
Standard Shipping is free for most countries/areas.
Express Shipping via DHL Express or FedEx is 10-40USD (excluding tax) depending on your country. If your order is over 500USD, DHL Express Shipping is free*.
*KiiBOOM keyboards are not eligible for free shipping.
Shipping fees exclude import taxes or processing fees that may be applicable for your country. Mechlands is not responsible for such fees. Should you refuse to pay the tax/customs fees, shipping fees will still be deducted from the amount paid for the two-way freight charges. The cost of the freight charges may be more than the amount reflected on your order due to tax and other miscellaneous fees.
Standard Shipping via YunExpress is a tax-inclusive option for some countries. However, Mechlands will not be responsible for additional administrative or handling fees charged by your local courier company or customs. Please kindly check this with your local customs.
For certain remote areas, there may be additional charges via Express Shipping. We will contact you if there is a need to make additional payments. Should you have any other queries regarding shipments, please contact us before placing an order.
Who does pay for the import tax/custom fees?
Customers have to bear any form of custom/import/processing fees that are applicable for your parcel.
If the custom fees and the delivery of the parcel are rejected by the recipient, the shipping cost still needs to be paid. Mechlands only arranges the refund of the order amount after deducting the shipping cost incurred.
Which countries do you ship to?
We are generally able to ship to most countries via Express Shipping, and many countries via Standard Shipping. Shipping methods may alter due to different situations. After proceeding to Checkout, the available shipping method(s) and cost will be stated before the payment page.
Note:
Note: For countries and areas of Africa, Alaska, Argentina, Canada, Hawaii, Kuwait, Mauritius, Montenegro and Sri Lanka, to name a few, we can only do Express Shipping. This may be subjected to changes due to unpredictable events such as pandemic, war, and etc.
How do I cancel order?
Cancellation or/and modification of orders can only be done manually via our staff, provided that our Warehouse Team has not processed your order.
As our Support Team may not be available during non-working days and weekends, please place your order wisely as support cannot be guaranteed for such requests.
Should you really need to cancel or/and modify your order after purchase, please contact us via our support email (support@mechlands.com) or website chat. We will help you with the changes if that could be done.
For other queries, the fastest way to contact us is via our website or Discord
Do I get tracking details for my order?
After placing an order, you will receive the order confirmation email. After your order is shipped, you will also receive a tracking email. You can track your order via the tracking number online. Should you not have received the emails or face any difficulties tracking your order, please kindly contact us for support.
What if i dislike the product once it arrives?
On the ground of disliking a product, you may return any non-customized and non-sales product that is sealed, within the 15 days upon receiving it. To be eligible for a return, your item must be unused and in the same condition that you received it. It also must be in the original packaging. Customized and sales products, accessories, or spare parts are excluded from the 15-day return policy. The shipping fee, handling fees, or any form of tax caused by return will NOT be refunded.
My product came with some kind of factory issue
For factory defective items within the first 30 days upon delivery, you would need to provide a solid proof. All customers are strongly advised to take an unboxing video of their parcel and packaging. If the item is defective due to manufacturing issues instead of unguided manual modifying/disassembling, Epomaker will provide a shipping label and reship the replacement unit or refund to you after receiving the return parcel.
Who applies to your free 15/30 Days Return Policy program?
*Our 15-day & 30-day warranty applies only to the following countries Canada, United States, Netherlands, Poland, United Kingdom, Czech Republic, Australia, Brazil, Saudi Arabia, Spain, Ukraine, France, Mexico, Italy, Chile, South Korea, Japan, Switzerland, United Arab Emirates, Portugal, Israel, Russia, Belgium and Germany. Customers in other countries may incur additional fees for warranty service.