Tanchjim Oxygen In-Ear Monitor (IEM) Earphone


The Tanchjim Oxygen is a beautiful well built IEM that uses a 9.2 mm graphene dynamic driver, has an ergonomic fit due to its compact size, and produces a smooth sound. The cables are detachable and can be swapped easily. It comes with two cables, a silver plated OFC cable, and another that has an inline microphone and remote. You can also upgrade your cable with the Tanchjim IEM Upgrade Cable.


  • "Two main definitions followed us while we were examining Tanchjim Oxigen IEMs and writing this review: accurate and clean. This addresses both — overall design and sound." - IryxBRO on HeadFi
  • "Tanchjim deserves a pat on the back for tuning Oxygen. It is an excellent specimen of Harman tuning and is one of best sounding IEMs under $300." - Animagus on Head-Fi


  • Tanchjim Oxygen In-Ear Monitor (IEM) Earphone
  • 2 cables
  • 6 pairs of ear tips
  • Carrying case


  • Driver unit: 9.2mm graphene dynamic
  • Sensitivity: 110 dB
  • Impedance: 32 ohms
  • Frequency response: 10 Hz–40 kHz
  • Plug: ⅛ in (3.5 mm)
  • Cable length: 3.9 ft (1.2 m)

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