Features > A new benchmark in portable sound reproduction > Unrivalled precision & craftsmanship > Developed in Germany and manufactured at our state-of-the-art Ireland plant > X3R TrueResponse transducer technology for balanced sound with ultra-revealing detail > Helmholtz resonator chambers unmask critical audio details, even during extended listening sessions > Precision-milled and anodized aluminum housing > Gold-plated Fidelity ( ) MMCX connectors for improved stability > Choice of para-aramid reinforced cables (2.5 mm, 3.5 mm, 4.4 mm) > Adjustable ear hooks and choice of ear adapters including memory foam > Frequency response: 5 Hz – 48,000 Hz THD: 0.05% (1 kHz, 94 dB) Impedance: 18 ohms 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. 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. 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. Explore every last detail Our German-engineered TrueResponse driver ensures exceptionally natural reproduction. A new level of clarity A single dynamic driver only — of the highest quality, of course.
