DD ddHiFi at Audio46

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DD ddHiFi E2020B Janus2 Dual Sockets Dynamic IEMs

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Product SKU: E2020B (Janus)

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E2020B New Janus Very different

Many differences, same dual sockets

The Janus2 still features dual sockets which allows the use of earphone cables featuring both the MMCX as well as the 2-pin 0.78 mm connectors. Coupled with the T-shaped design, it allows you to hang down naturally or hook it over-the-ear simply by rotating the earbuds by 90 degrees.

Different speaker, the high-speed driver

The Janus 2 utilizes a newly developed high-speed speaker, which results in more powerful expressive force on fast-paced music. This 010 dynamic driver has a very fast response speed, coupled with the special cavity design, it presents a fresh and transparent sound without excessive excitement.

Different cavity tuning, double-layer rear cavity

The double-layer vibrating rear cavity design can better control the influence of reverse sound waves and ensure a cleaner sound in the front cavity. In the aspect of materials, it adopts a metal inner layer and a double-layer PC plastic outer shell. The airflow in the rear cavity of the speaker is decelerated by the dome metal cover and gathered in the middle, and then enters the outer cavity to absorb vibration and then left out from the tail end vent hole.

Different internal wires, customized by EA

The connecting wires in the earphone is particularly important in terms of sound details, especially the high-frequency density. The connecting wires used by Janus2 is developed and provided by Effect Audio, which uses a combined material of OCC and pure silver for the positive pole of the signal wire and pure OCC for the ground wire.

Different surface treatment, smooth and bright

The front cavity is made of 316 stainless steel which has been polished and electroplated. The smooth electroplated shell is not only to look different, but also to make the sound reflect faster in the cavity.

Different earphone cable, mixed copper and silver

It is the first time to use two different materials for the stock earphone cable. The positive pole of the signal wire is made of high-purity silver-plated OFC. And the ground wire is made of pure OFC material. This combination is to make the earphone more balanced as a whole and more pleasant to hear for long-term listening.

Different earphone accessories, color changed

Compared with the retro style of the Janus, the storage case in the Janus2 looks more fashionable, and just like the tuning of Janus2. A magnetic cable clip is also included, which makes it easy to organize cables or clip to your pocket or collars.


  • Version: Standard Edition, SE Youth Edition
  • Shell material: PC and 316 stainless steel
  • Speaker: Φ10mm Dynamic
  • Frequency Response: 20Hz-20kHz
  • Sensitivity: 105dB
  • Impedance: 12Ω
  • Weight: 8.3g (cable is not included)
  • Size: 9x13x8.5mm


Standard Edition

  • Earphone Storage Case (C80A)
  • Upgrade Earphone Cable (3.5+MMCX)
  • Janus (E2020B)
  • Magnetic Cable Clip (C10A)
  • MMCX hole dust cover 10pcs
  • Silicone Tips (Bass type)
  • Silicone Tips (Treble type)

SE Youth Edition

  • Earphone Storage Case
  • 3.5 Earphone Cable (0.78 pin)
  • Janus (E2020B)
  • MMCX hole dust cover 10pcs
  • Silicone Tips (Bass type)
  • Silicone Tips (Treble type)


E2020A E2020B (Standard Edition) E2020B (SE Youth Edition)
Earphone Socket MMCX / 0.78 Dual Sockets
Driver Type 10mm single dynamic driver @ 32Ω 10mm single dynamic driver @ 12Ω
Sound Style Relax and comfortable, more suitable for male voice and slow music (Vintage type) Mid-high frequency focused, more suitable for female voice, electronic music and pop music (Japan and ROK fashion type)
Driver Soldering Flexible FPCB connecting wires Effect Audio customized OCC + pure silver internal wires
Rear Cavity Tuning Transparent PC outer cavity Dual cavities-Aluminum reflecting inner cavity + transparent PC outer cavity
Front Cavity Tuning 6 air tuning pits 2 air tuning pits + sound filter sponge
Metal Shell 316 stainless steel, brushed metal finish 316 stainless steel, electrolytic polishing finish
Earphone Cable Material OCC with dusty blue sheath Silver-plated OFC with transparent sheath Black earphone cable
Earphone Cable Socket / Connector MMCX+2.5 MMCX+3.5 2pin 0.78 +3.5
Earphone Storage Case Dusty blue leather case Champagne leather case Black fabric case
Magnetic Cable Clip Dusty blue, dual magnetic Champagne, dual magnetic /
Weight 8.0g (excl. earphone cable) 8.4g (excl. earphone cable)

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