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IE 900

The purest, most natural sound.

Price¥ 10,999Plus applicable sales tax

Experience peak German audio engineering

The precision-manufactured aluminum housing of the IE 900 faithfully protects the dynamic TrueResponse transducers at the heart of Sennheiser’s innovative X3R technology.

  • Sophisticated one-piece aluminum housing
  • 7 mm TrueResponse transducers
  • X3R Triple–resonator chamber technology
  • Treble detail and soundstage well suited for classical music
  • 2.5, 3.5 and 4.4-mm cable / MMCX connector
  • Premium carry case


  • A new benchmark in portable sound reproduction
  • Developed in Germany and manufactured at our state-of-the-art Ireland plant
  • Helmholtz resonator chambers unmask critical audio details, even during extended listening sessions
  • Gold-plated Fidelity (+) MMCX connectors for improved stability
  • Adjustable ear hooks and choice of ear adapters including memory foam
  • THD: 0.05% (1 kHz, 94 dB)
  • Unrivalled precision & craftsmanship
  • X3R TrueResponse transducer technology for balanced sound with ultra-revealing detail
  • Precision-milled and anodized aluminum housing
  • Choice of para-aramid reinforced cables (2.5 mm, 3.5 mm, 4.4 mm)
  • Frequency response: 5 Hz - 48,000 Hz
  • Impedance: 18 ohms

Behind the scenes of the IE 900

How every detail matters to achieve the most coherent and detailed sound experience.

The IE 900 — goodbye to tradeoffs

The IE 900 reveals the true potential of any recording. If it’s a masterpiece, you’ll hear it. Brilliant, sparkling treble — with no trace of sibilance.

A new level of clarity

A single dynamic driver only — of the highest quality, of course.

IE 900 sennheiser

An acoustic back-volume establishes balance

To ensure accuracy across this critical frequency band, we’ve employed what is known as an acoustic back volume.

The sound of manufacturing expertise

We build the IE 900 at our state-of-the-art audiophile manufacturing plant in Ireland.

A precise fit for precise sound

We took the comfort and secure fit of these professional solutions as inspiration for the IE 900.

It pays to have good connections

In addition to outstanding sound, audiophiles appreciate durable products that are made to last. Here as well, the IE 900 excels.


Article number (SKU)
Transducer principle
dynamic, Extra Wide Band (XWB)
Transducer size
7 mm
Frequency response (speaker)
5 Hz - 48,000 Hz

What's included

  • IE 900 in-ear headphones
  • Balanced para-aramid reinforced cable with 2.5mm connector
  • Unbalanced para-aramid reinforced cable with 3.5mm connector
  • Balanced para-aramid reinforced cable with 4.4mm connector
  • 3 pairs of silicone ear adapters (S, M, L)
  • 3 pairs of foam ear adapters (S, M, L)
  • Premium carry case with metal serial no. plate
  • Cable clip, Cleaning tool & Cleaning cloth
  • Presentation box with signed customer certificate & User manuals



Accessories & spare parts

We are committed to the longevity of our products.

  • Foam ear adapter, 3 pair (L)
    Foam ear adapter, 3 pair (L)
  • MMCX Microphone Cable with 3.5 mm plug
    MMCX Microphone Cable with 3.5 mm plug
  • Foam ear adapter, 3 pair (M)
    Foam ear adapter, 3 pair (M)

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