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Description
Specifications
Reviews
Q&A
Shipping
Warranty

Accurate and exquisite full frequency performance
Hybrid system, high performance of 13mm beryllium diaphragm dynamic, with 4 high frequency/ ultra-high frequency balanced armature drivers.

Beryllium diaphragm dynamic driver
The newly developed beryllium diaphragm dynamic driver, with a diameter of 13mm, brings accurate low-frequency reduction and rich medium-frequency details, allowing players to experience unprecedented extremely low-frequency response and strong acoustic performance.

Knowles balanced armature driver
Four Knowles currently high-end high-frequency and ultra-high frequency balanced armature drivers achieved accurate high-frequency and ultra-high frequency reduction, greatly improve the density of audio and ultra-high frequency, and show natural and exquisite sound.

Zirconium alloy liquid metal
The precision machined of liquid zirconium alloy cavity can greatly reduce the weight of the cavity, but at the same time, the strength of the cavity reaches three times of stainless steel to effectively suppress harmonic resonance, and the acoustic performance is outstanding.

Air charging loop system -A.C.I.S
The unique A.C.I.S in the back cavity, together with excellent performance 13mm beryllium diaphragm dynamic driver, makes the low-frequency diving and sense feeling more excellent. Creating infinite possibilities in a limited space has always been the pursuit of Dunu engineers.

FeaturePatented self-locking quick replaceable plug
Dk-4001 headphone wire rod is designed with self-locking quick replaceable plug, which has both high appearance level and reliability. Four plugs (3.5mm single end /2.5mm balanced /4.4mm balanced / 3.5pro balanced) comprehensive consideration of the mainstream Walkman balance standard, convenient for players to adapt to a variety of players.

Patented MMCX expansion pin
Standard MMCX interface, as well as maintain a wide range of compatibility and improve reliability, greatly improve the service life.

Single crystal copper and pure silver mixed braided cable
Dk-4001 is equipped with high-purity Furukawa Single crystal copper and pure silver braided cable, which can reduce transmission loss and ensure sound quality. The wire is wrapped with a single crystal copper shielding layer to isolate external electromagnetic interference, makes the sound background cleaner, escorts music signal transmission.

Comfortable wearing experience
Application lightweight materials, with ergonomically-designed shape, comfortable to wear, wear for a long time is not tired, suitable for listening for a long time.

Hand-made leather case
Selected the goatskin, it is soft leather, handmade, exquisite and unique, reasonable volume, convenient storage.

Customize the SpinFit earbuds
Dk-4001 comes with customized SpinFit eartips, optimized for multi-driver earphone design, comfortable to wear, soft sound.

Practical and abundant accessories
Dk-4001 packaging is equipped with a variety of practical and rich accessories, leather case, custom eartips, nameplate, Aircraft plug, cleaning tools, everything, to meet the needs of the user.

Specifications:
Model: DK4001
Driver: beryllium diaphragm dynamic driver and 4 Knowles balanced armature
Impedance: 32 Ω
The dB value: 112 dB @ 1 KHZ
Frequency response: 5Hz-40k Hz
THD: < 0.3% @ 1 KHZ
Connector: MMCX expansion pin
Cable: single crystal copper& pure silver mixed
Cable length: about 1.2m
Net weight: about 12g

Package list:
DK4001 Earphone
Plug *4
Aircraft plug
6.35 plug
Cleaning brush
SpinFit silicone eartips L/M/S*2
Gray silicone eartips L/M/S*2
T500 foam *2
Leather case

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  • Function: For Mobile Phone
  • Function: Monitor Headphone
  • Function: HiFi Headphone
  • Function: Sport
  • Function: Common Headphone
  • Waterproof: No
  • Active Noise-Cancellation: Yes
  • Support Memory Card: No
  • Connectors: 3.5mm
  • Line Length: 1.2m
  • Frequency Response Range: 5-40000Hz
  • Control Button: No
  • Plug Type: L Bending
  • Vocalism Principle: Hybrid technology
  • Sensitivity: 112dB
  • Wireless Type: None
  • Support APP: No
  • Model Number: DK4001
  • Style: Ear Hook
  • Resistance: 32Ω
  • With Microphone: No
  • Brand Name: Dunu
  • Communication: Wired
  • Is wireless: No
  • Volume Control: No
  • Feature: FeaturePatented self-locking quick replaceable plug
  • Material: Zirconium alloy liquid metal
  • cable: Single crystal copper and pure silver mixed braided cable
  • Feature2: Customize the SpinFit earbuds




















QUESTIONS & ANSWERS

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 Shipping Policy

  1. All items will be shipped out from China within 1~ 3 days after payment except prominent note on the page. If we cannot, we will let you know new shipping date at once after the payment and cancellation is available if you cannot accept that. 
  2. We ship all items at free charges through Registered Air Mail with a tracking number except you choose others. 
  3. DHL/UPS/EMS  as a faster shipment option with additional charge is available. 
  4. Taxes may apply by some country law. Hifigo will be not responsible for the import tax. But we could declare item at a reasonable lower cost if you wish. If the declared value isn't accepted by your Custom finally, you have to pay the extra tax. 

Delivery Lead-Time for Express Service

If you chose Express service with extra charges which is US$20-25 usually, it will be shipped out by DHL or EMS

North America or Europe : 3-5 days by DHL

Japan/Korea/Tailand : 3 - 5 days by DHL

Russia: 5-7days by EMS  

Pls note: There will be additional charges around US$ 35 for remote area. If you are not sure about whether your area is remote, write us for promopt reply.   

Delivery Lead-Time of Free shipping 

North America

United States/ Mexico/ Canada: 6 - 12 days ( Dispatch by USPS or Fedex usually ) 
Elsewhere of North America: 10 - 20 days 

Asia

Tailand:5 - 8 days
Japan:5 - 8 days ( Dispatch by Sagawa , usually you will get it in 2days after you could track it) 
Malaysia:5 - 8 days 
Korea: 8 - 12 days
Elsewhere of Asia: 10- 20 days

Europe

Germany: 5 - 8 days
UK:5 - 8 days ( Directly line to UK)
France:5 - 8 days 
Ukraine:5 - 8 days 
Italy main cities : 10-14 days 
Elsewhere of European countries: 8 -17 days
Russia major cities: 10 - 15 days 
Elsewhere of Russia: 15-30 days

Oceania

Australia:5 - 9 days
Elsewhere of Oceania: 10 - 20 days

Africa

14-35 days  

South America

Peru major cities:14-16 days 
Elsewhere of South America 14-35 days

Note: There may be exceptions to the delivery times presented here, depending on your location. Sometimes it delays due to the customs check or festival. 

Tracking FAQ

Q: When will you ship out the cargoes after payment?

A: Within 1 - 3 days except prominent note on the page for pre-sale items. If we cannot ship out in 1~ 3 days, we will let you know new shipping date at once and cancellation is available if you cannot accept that. 

Q: I got a shipping confirmation and tracking number. Why don’t I have tracking information listed immediately?

A: Since shipping process involves multiple steps of coordination between internal and external parties, it doesn’t happen instantly. Usually tracking information will be listed on the next day of shipping confirm notification email/SMS.  

Q: Why tracking information is not updated for a long time? 

A: Usually it is on the way to your local country, pls be patient. If it is not updated a few days after arriving in your country, pls try to contact us or the carrier for additional information. 

Any other questions, feel free to contact us support@hifigo.com

 

Warranty

Hifigo offers 1 year warranty for Consumer Electronic products and so on. Should your product prove to be defective for non-artificial reasons within 1 year from the date of arrival, you can send the defective items back or unit for free repair. Hifigo will be in charge of the maintenance handling fees and replacement charges for defective components found to be defective due to manufacturer’s defect. (this free repair rule does not apply to motherboard & screen).

This warranty extends only to personal use & does not extend to any product that has been used for commercial use, rental use, or use which is not intended. There are no warranties other than expressly set forth herein. This warranty is not transferable.

THE WARRANTY DOES NOT APPLY TO THE FOLLOWING

  • Damage due to accident, dis-assemble, waterlogmisuse, abuse, alterations or vandalism.
  • Improper or inadequate maintenance.
  • Unauthorized modification or commercial use. 
  • Damage in return transit.
  • Unsupervised use by children under 18 years of age.

For the warranty details regarding other goods, please refer to the manufacturer’s original enclosed instruction manual.

Hifigo is not responsible in any way for damages, losses or inconveniences caused by equipment failure or by user negligence, abuse, or use not in accordance with the ‘User Guide’ or any additional safety, use, or warnings included in the product materials. Furthermore, Hifigo is not liable for incidental or consequential damages of any nature resulting from the use of this product and any liability shall not exceed the purchase price of the product.

This warranty gives you specific legal rights. You may also have other rights which vary from state to state.

Please email our customer service Hifigovip@gmail.com with your order number and your specific inquiries. Please describe your problems that you encountered with as details as you can.

Returns or Exchange

Can I cancel an order? 

Non- customized order can be cancelled without restocking fee if the product has not been shipped. For customized order, it is not accept for cancellanation after 24 hours you have placed an order. Hope you could understand that we will start production for your customized order once we receive your order in 24 hours.

Can I return the product that I don’t like and get refund?

Some items may be returned for either money back or exchange subject to the following conditions. Our policy is within 7days after receiving according to the tracking record. If 7 days after receiving have gone , unfortunately we can’t offer you a refund or exchange.

  • Any item returned  must be complete with all accessories, hardware, manuals or instructions, and in the same "new" condition as when it was when shipped to you. Please send us the photos or videos of it. 
  • Any item returned incomplete or with physical damage such as scratches etc., excessive signs of use or abuse will not be accepted for return.
  • Any item returned will be evaluated upon receipt. Of course, we cannot give refunds on defective merchandise resulting from mishandling, misuse, tampering or improper use.

Can I exchange product I ordered? 

We offer exchange service if the items in following conditions. (*Except Non-refundable & Non-exchangeable items)
  • Products must in “Good Condition” with no damaged in any way.
  • To exchange a product, the product must be available to purchase on Hifigo.com and its price must be higher or equal to the original order amount.
  • The customer will have to pay the difference in price if s/he selects a product of a higher price.
  • If you have purchased any items with any discount offered by a joint promotion or other promotional activities but the discount offer has expired at the time of the exchange, the discount shall not be taken into account. Discounts offered by companies other than Hifigo shall be dealt with in accordance with the terms and conditions of the relevant companies.

What’s the normal process of cancel, return or refund ?

Please email our customer service hifigo@gmail.com with your order number and your specific inquiries. Please keep the product as original as possible and send us the photos or videos of it.

Which kind of product can be returned and refunded?

All cable/DAC/AMP/UIEM products are returnable if the product is in the same condition as when purchased. CIEM products cannot be returned. Defective products covered under warranty could be returned for servicing, but NOT for refund.

When do items need to be returned by?

No later than 7 days after receiving the product (according to tracking record)

Where do items need to be returned to?

For international shipping, to make your ship back easily, pls contact us and choose your convenience place to ship back to us. If you want to ship back to us, please contact us for our shipping address.

When can i get refund for my product?

We will refund you once we receive your order and after product checking, we will refund you within 3 working days.

How much can I get for refund?

We will charge you 30% of the MSRP for restocking fee and then refund you the rest of the money. For example, if the MSRP is $100, we will refund you $70. If the item is returned without its complete original packaging (original box, foam padding etc.), additional 10% packing fee will apply. 

Who will be responsible for the shipping back fee?

You will be responsible for paying for your own shipping costs for returning your item. Shipping costs are non-refundable. If you receive a refund, the cost of return shipping will be deducted from your refund.  To provide you with the best shopping experience, we will try our best to choose the best shipping method to you. If you are shipping an item over $75, you should consider using a trackable shipping service or purchasing shipping insurance. We don’t guarantee that we will receive your returned item.