The popular brand of all things audio is back with their biggest release of 2021 so far. Their last entry in the world of IEMs was the IE 300, and now they look to follow it up with the IE 900. There are a few key differences in this new model, so let’s see what Sennheiser has to offer.
The first thing that’s going to stick out to you the most is the IE 900’s fresh new shell. This new housing is milled from a single block of aluminum to create the earphones’ unique triple-chamber absorber (T3CA) system.
Triple Chamber Absorber System
Sennheiser’s quest for delivering the highest-fidelity sound begins with the housings of the IE 900’s earpieces. They are milled from a single block of aluminum to create the earphones’ unique triple-chamber absorber (T3CA) system. Originally developed for the audio specialist’s acclaimed IE 800, the IE 900 features the next generation of the patented absorber system, which uses three chambers and an acoustic vortex milled into the nozzle to counter the masking effect.
This acoustic phenomenon arises as the human ear cannot perceive high-frequency sounds at a low volume if louder sounds in a lower frequency range occur at the same time. The absorber system prevents undesired peaks by removing the energy from masking resonances, making even the subtlest nuances of sound audible.
Compared to traditional multi-driver concepts, single-driver technology promises greater fidelity for listeners. The IE 900, therefore, features Sennheiser’s new X3R transducer, a refined version of the audio specialist’s 7mm audiophile Extra Wide Band transducer, engineered for tighter tolerances and expertly tuned to achieve even greater fidelity. The IE 900 transducer is coupled with the acoustic back volume in the fully automated transducer manufacturing facility at the audio specialist’s headquarters in Germany, resulting in the lowest unit-to-unit variations in miniature, dynamic drivers.
Thanks to the high-performance Fidelity Plus MMCX connector, audiophiles have the freedom of cable choice with the IE 900. Deeper integration into the housing provides better stability for the gold-plated connector. The earphones come with an unbalanced cable with a 3.5mm connector and balanced cables with 2.5mm and 4.4mm connectors. Tested and improved for robustness and longevity, the para-aramid-reinforced cables can withstand thousands of bending cycles.
For a comfortable and secure fit, the IE 900 offers ergonomic features, including individually adjustable ear hooks as well as silicone and memory foam ear adaptors in three sizes, perfect for extended periods of personal music enjoyment.
The Sennheiser IE 900 is priced at $1,299 and is now available for pre-order at Audio 46.