Name: Sennheiser IE 900
Brand: Sennheiser
SKU: B094DP3177
Price: 1699.95 USD

Key specs

Material Chassis Primary

Aluminum

Resin31%Plastic25%Aluminum17%Metal6%

Aluminum appears on 17% of the 48 in-ear monitors we've cataloged (of 39).

Connection Type

Wired-3.5mmMost common

Wired-3.5mm92%Bluetooth8%

Wired-3.5mm is the most common — on 92% of the 39 in-ear monitors we've cataloged (of 39).

Ear Tip Material

Silicone, foamMost common

Silicone64%Memory foam20%Foam12%Others4%

Foam is the most common — on 12% of the 50 in-ear monitors we've cataloged (of 39).

Has Microphone

NoMost common

False66%True34%

False is the most common — on 66% of the 35 in-ear monitors we've cataloged (of 39).

Build

Material Chassis Primary: Aluminum

Connectivity

Connection Type: Wired-3.5mm
Cable Type: MMCX detachable, 3.5mm single-ended, 2.5mm balanced, 4.4mm balanced

Design

Ear Tip Material: Silicone, foam
Ear Tip Sizes Included: S, M, L
Earbud Form Factor: In-ear
Detachable Cable: Yes
Wearing Style: Over-ear (cable up)

Microphone

Has Microphone: No

Sound

Driver Size: 7 mm
Driver Count: 1
Driver Type: Dynamic
Frequency Response: 5-48000 Hz
Frequency Response High Hz: 48000 Hz
Frequency Response Low Hz: 5 Hz
Frequency Response Signature: U-shaped
Impedance: 18 Ω

Features

Inline Controls: No

Identity

Model Number: IE 900

Release

Date: 2021-06-01
Msrp Usd: 1299 USD
Year: 2021

SoundGuys review

Read the full review ›

SOUNDGUYS rating

6.9/ 10

Worth a look

Reviewed byJasper LastoriaWriterReviewed July 2023

Isolation8.9

Comfort & fit8.0

Connectivity6.5

Design9.0

Portability4.5

Features6.0

The verdict

Sennheiser really nails it on excellent isolation, proving that you don't need apps and noise cancellation to quiet the world. In a highly digital world, the aluminum housing reminds us that humans still like nicely made objects. The in-ear monitors provide great sound quality, but one wonders if the IE 900 is merely an exercise in prestige or actually worth the price.

✓What we like

✓Excellent sound quality

✓Build quality

✓Detachable cables

✕What could be better

✕Price

✕Sound is highly fit dependent

Read the full SoundGuys review →

Lab data

How we test ›

Objective measurements from the SoundGuys test lab — overlay other models to see how this one compares.

Compare with

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0 of 4 overlay slots used

Sennheiser IE 900SoundGuys Headphone Preference Curve

Measured frequency response (dB) against the SoundGuys house target — the dashed curve. The closer the measured line tracks the target, the more neutral the tuning; peaks ride above the target, dips fall below it.

Frequency response — measurement data

Sennheiser IE 900: frequency response, as measured in the SoundGuys lab. Frequency in hertz.
Frequency (Hz)	Response (dB)
20	4.8
25	4.8
32	4.6
40	4.2
50	3.7
63	2.9
80	2.0
100	1.0
125	0.0
160	-1.1
200	-2.1
250	-2.7
315	-2.7
400	-3.4
500	-3.8
630	-3.0
800	-1.9
1000	0.1
1250	2.1
1600	3.9
2000	4.2
2500	3.3
3150	1.7
4000	1.1
5000	3.7
6300	2.8
8000	3.9
10000	2.5
12500	1.3
16000	-9.0
20000	-25.3

Sennheiser IE 900

Passive isolation (dB) with ANC off — how much ambient noise the fit blocks on its own. Higher on the chart means more attenuation.

Passive isolation — measurement data

Sennheiser IE 900: passive isolation, as measured in the SoundGuys lab. Frequency in hertz.
Frequency (Hz)	Attenuation (dB)
21	5.3
26	4.3
33	6.3
41	7.3
52	7.7
65	8.3
82	7.3
103	8.0
130	9.8
163	10.7
205	11.7
259	12.4
325	12.5
410	16.5
516	13.9
613	12.5
772	18.7
972	19.8
1220	22.8
1540	27.0
1940	36.9
2440	42.6
3070	43.8
3870	44.0
4870	46.4
6130	42.1
7720	46.6
9720	44.5
12200	39.5
15400	38.9
19400	35.0