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OURART QJ21 Flagship 14.6mm Dynamic Driver MMCX HiFi Earbud with Pure Silver Cable


OURART flagship earbud, sound continues OURART earbud popular style, prominent vocal. Inspired by the prototype of supercar wheel shaft, it is ergonomic to wear. The whole hollow out design brings the natural and transparent listening feeling. 8 strands 27AWG single crystal pure silver cable, completely different from copper or silver-plated cable, sound is exquisite and pure.

14.6mm composite PEEK+PET titanium-plated diaphragm speaker,

Improved MMCX expansion interface

8 strands pure silver manual upgrade cable, 27WAV higher than 99.996% single crystal pure silver conductor

Pure copper gold-plated plug, provide 3.5mm single end and 2.5mm balanced.

OURART QJ21’s flat head design, with polished round, without edges and corners. It is more comfortable to wear. A good fitness, have certain sound insulation effect. You can use them without eartips.

Sound source to recommend

QJ21’s impedance is 45 Ohm and sensitivity is 127dB, high impedance and high sensitivity. Mobile phone is easy to push the effect, ordinary mobile phone volume needs to open to about 80%.For some low-thrust mobile phones, it is recommended to use the type C earphone cable with slightly higher power. The best effect is over 25mW. If you use a HIFI player or an earphone amplifier, the sound quality will be improved.


Drive unit: 14.6mm PET composite PEEK titanium-plated diaphragm driver

Impedance: 45ohm

Frequency response: 15-45kHz

Sensitivity: 127dB/1mW

THD: <1%@1kHz

Cable: 8 strands 27AWG>99.996 Single crystal pure silver conductor

Connector: MMCX

Plug: 3.5mm single end/2.5mm balanced end

Cavity material: high hardness aluminum



1 cable

1 pair of eartips

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Free Shipping

All listed items will be shipped through Registered Airmail with tracking number if there is no extra shipping option or shipping description at the product page.

Economy shipping: Will be shipped without tracking number.(because of the covid-19 affects, economy airmail parcel is easy to lose, pls place the order by choosing registered airmail, or you purchase one more product , we can send together via registered airmail)

Registered Airmail : Will be shipped via such as Hong Kong post , Singapore Post, you can leave us a message if you have any requirements about the shipping method .

We can ship the parcel to Canada and Europe countries via tax-inclusive shipping method with extra charge, pls leave us a message if needed.

Express service: Will be shipped via DHL/EMS/UPS/FedEx,Canada and Europe countries will be shipped via tax-inclusive shipping method for free.

  • Views: 13647
  • Brand: OURART
  • Product Code: QJ21
  • Availability: In Stock
  • $245.00

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Tags: OURART QJ21, MMCX, 2.5mm, balanced