Sennheiser IE 900 - The purest, most natural sound.
For demanding music lovers, the IE 900 offers an unparalleled listening experience. Every aspect of this exceptional earpiece testifies to our passion for detail, from the optimised 7mm sound transducer to the innovative X3R resonator chamber technology to the precision-machined aluminium housing.
IE 900 Every detail counts.
The IE 900 reveals what every hi-fi enthusiast ultimately cares about: subtle details and all the sonic splendor of high-quality music recordings.
The IE 900 surpasses everything music enthusiasts typically expect from earbuds. It impresses with its incredibly detailed reproduction and tonal lightness. With the IE 900, we have created a true sound microscope that combines arts and crafts at the highest level. It reveals what every hi-fi enthusiast ultimately interests: the most subtle details and all the tonal splendor of high-quality music recordings. The Sennheiser engineers have used all their know-how to optimise our well-known 7mm sound transducers. Our new development X3R (a system of three resonator chambers milled into the case) and an acoustic swirling channel (the vortex) bring out the potential of our TrueResponse broadband converters.
When everything is clear.
Only a single dynamic converter of the highest quality.
The outstanding sonic purity of the IE 900 is the result of a coherent concept that has only one goal: true, true-to-original reproduction. When we developed the IE 900, we decided to use only a single dynamic converter of the highest quality. The X3R technology is integrated into the housing of each earpiece – a system consisting of three Helmholtz resonator chambers and an acoustic swirling channel. The chambers prevent unwanted resonance peaks, which adjust the view of the sound of the original recording with simpler solutions. Here we have chosen aluminium as the housing material because it allows the necessary processing precision for the three-chamber absorber. Audiophile recordings are works of art, and as with valuable paintings, it would be unforgivable to damage them by careless transportation. The IE 900 reveals the potential of each shot.
Structure and Chaos: Back volume and vortex
A tidy sound pattern in which the trained ear can find its way and do not interfere with overlays, requires the clean separation of low and medium frequencies.
We have set clear limits for this critical frequency range by means of a so-called return volume. The return volume defines the airflow behind the converter that achieves the desired tuning. A complex structure – the vortex – is milled into the sound of the earpiece, in which the acoustic energy is swirled. This creates a natural, fatigue-free sound experience without unpleasant resonances.
Precision and sound competence
The IE 900 is manufactured entirely in our renowned factory in Ireland, which is renowned for the outstanding quality of the products manufactured here.
The material of choice here is aluminium - because it can be precisely machined to create a beautiful and durable home for the electroacoustic components. A five-axis milling machine releases each individual housing with the utmost precision – almost like a futuristic sculpture – out of an aluminium block. The anodized housing resists wear and corrosion even during daily music enjoyment in a moving life. The transducers of each IE 900 are paired in automatic production with the aim of least deviation. The result is a clearly defined stereo stage without sinks and breaks. This creates a whole at the highest level from the enthusiasm for the perfect, profound knowledge of acoustic contexts and a manufacturing process with the lowest possible manufacturing tolerances.
Nothing but music in your head
Professional musicians rely on high-quality, tailor-made "personal monitoring systems". We were inspired by their comfort and secure fit when designing the IE 900.
No noise should affect the music experience. With the IE 900 you only listen to music; the way it was created – no interference. It fulfils the desire for high-fidelity reference sound without "ifs" and "buts"; at the desk as well as on the forest walk or on the train. Professional musicians rely on high-quality, tailor-made "personal monitoring systems". We were inspired by their comfort and secure fit when designing the IE 900. Because the privilege of enjoying perfect live sound should not be reserved for musicians on the big stages of the world. What is essential for a great performance should always be part of the music enjoyment: the highest level of detail.
Best Connections
In addition to perfect sound, audiophile music lovers expect mechanical longevity. We also meet this expectation.
Among other things, thanks to the gold-plated Fidelity+ MMCX connectors, which ensure maximum contact safety. The socket embedded in a 4.8 mm wide recess provides bending relief for the connectors. And the Para-Aramid reinforced cables withstand thousands of bending cycles – that's reassuring when you actually remove the IE 900 every now and then and stow it in the included carry bag with individual serial number. The 3.5mm stereo jack allows you to connect to a virtually unlimited number of digital audio players, headphone amplifiers, laptops and audio interfaces. In addition, each IE 900 comes with a balanced 2.5 mm and 4.4 mm cable, which allows direct connection to high-quality Hi-Fi components with balanced outputs.
