Hi-Fi Choice - Recommended
...the IE 900 scours detail from the noise floor like nothing else here. Articulation, separation and drive are equally impressive while treble extension and refinement are simply outstanding.
...greater clarity on a still larger soundstage. And yet it's the way the individual attributes coalesce into a coherent whole that stuns.
...voice has a purity and depth that makes you think you're hearing it for the first time.
Indeed, whatever you play, there's a powerful feeling nothing is being missed - not just how low-level detail, but the finest shades and textures of instrumental timbre, nuances of technique and emotion.
LIKE: Effortless transparency, speed and coherence; size and weight.
WE SAY: A pristine sonic performance that really doesn't miss a thing.
Hi-Fi Choice | | July 2021
It's no mean feat to sound simultaneously wide open and tightly unified, but it's this apparent dichotomy that's the most immediately impressive aspect of the IE 900 sound.
The Sennheisers create such a spacious soundstage that each individual element or strand of the recording is simple to locate, enjoys proper autonomy in its specific area, and has more than enough room to reveal even the finest or most transient details of its individual performance.
...the impression of a group of musicians performing sympathetically, responding to each other and to the demands of the composition on the fly, is extremely strong. Very few headphones, no matter the price, can communicate the idea of musicians all bearing down on a piece of music with a commonality of purpose, but a free-flowing looseness at the same time, as these Sennheisers.
...smooth, even and utterly convinving
Bass is full-figured but fleet of foot, with plenty of substance but next-to-nothing by way of overhang - control is absolute.
Detail levels are sky-high, and the line between forensic meticulousness and spontaneity of performance is walked with complete confidence. Listening to this song as an information-rich digital file via a pair of Sennheiser IE 900 is not unlike looking at a beautiful view through a freshly washed window.
...they are as soothing as they come...they have the dynamic prowess and powers of rhythmic expression...They're light, comfortable...
The way the housings are milled, and the material from which they're constructed, makes them look quite attractive in situ too.
...you'll know exactly why they cost what they cost.
Hi-Fi+ | | July 2021
...effortless coherence across the frequency response...allows for the tonal beauty of the track to be the main focus. Tiny little details are effortlessly picked out of the mix...the scale and impact is possesses...exceptionally fast and controlled-sounding earphone. Bass starts and stops with precision...the IE 900 sounds superbly three dimensional.
This is a staggeringly talented in-ear...this is one of the very finest earphones anywhere near the price.
Staggeringly open, engaging.
A truly outstanding earphone that takes Sennheiser's single-driver ethos another stage further.
Hi-Fi Choice | | June 2021
Big, astonishingly cohesive sound.
I've no problem with acknowledging that Â£1099 is a lot of money for a wired earphone but for a device that allows you briefly transcend the limitations of space and time... it's not too bad.
Ed Selley | avforums.com | June 2021
Sennheiser’s IE 900 combine listenability, insight and comfort, making them one of the front runners at this elevated price
There’s no denying that the IE 900 are a pricey proposition, but if you have a good enough source and amplification, their build, engineering and sound quality more than justify that hefty outlay.
- Detailed, articulate sound
- Refined yet entertaining presentation
- Clever engineering
What Hi-Fi? | | May 2021