Sennheiser IE900 In-Ear Monitors (IEMs)

Sennheiser's flagship in-ear monitor, the IE 900 is the product of Sennheiser's full engineering capability applied to a single-driver IEM. The result is an in-ear monitor that has set a new standard for what a dynamic driver IEM can achieve.

Type & Technology

In-ear monitor (IEM), dynamic. Single 7mm TrueResponse transducer in a housing machined from pure aluminum, with an X3R triple resonator chamber system that controls unwanted resonances across the full frequency range. MMCX detachable cable connection. Handcrafted in Germany.

Sound Character

Reference-quality, tonally impeccable, and dynamically alive. The IE 900 delivers a frequency response that extends further in both directions than virtually any other IEM, with bass that is deep and tactile, a midrange of extraordinary transparency, and a treble that reaches into the upper registers with natural air and extension. The single-driver design ensures perfect phase coherence across all frequencies, resulting in a presentation that sounds cohesive and natural rather than assembled from parts.

Build & Comfort

CNC-machined aluminum housing with a comfortable over-ear fit and a generous selection of ear tips. MMCX connection supports high-quality aftermarket cables. The attention to detail in construction matches the acoustic performance.

Best For

Audiophiles seeking the finest portable listening experience available from a dynamic driver IEM, particularly those who value natural tonality and coherence above all else.

What's in the Box

• Sennheiser IE 900 IEM
• Cable with 3.5mm jack
• Cable with 4.4mm balanced jack
• Cable with 2.5mm balanced jack
• Selection of ear tips (silicone and foam in multiple sizes)
• Carry case

Specifications