Meze ASTRU vs Sennheiser IE 900: which should you buy?

Specs, scores and condensed review verdicts for the Meze ASTRU vs Sennheiser IE 900, side by side. Where a product has no HearWiki score yet, not enough reviews have been aggregated to rate it.

Wired IEMs

Meze ASTRU

Not yet scored

$900

Full review data

Wired IEMs

Score breakdown

Each axis is a 0–10 blend of what reviewers scored, not a lab measurement.

Sennheiser IE 900 leads on 3 of 4 measures.

Meze ASTRU
Sennheiser IE 900

HearWiki score

Sound

9.0

Value

6.5

Price (USD)

$900

$1,300

Generation & platform

The scores rank quality. This is the other question: is the newer one actually newer technology, or the same platform in a new shell?

Same generation

The Meze ASTRU is 4 years newer, but it is the same generation of hardware: nothing in the radio, the codecs or the noise cancelling separates them. Nothing separates them on convenience features either, so the choice comes down to tuning and price. For 4 years between them, that is a thin return - treat this as a restyle rather than a new platform.

ASTRU20254 yr newer
IE 9002021

Specifications

ASTRUIE 900

Type: Wired IEMs; Wired IEMs
Price (USD): $900; $1,300
HearWiki score: Not scored; 84
Released: 2025; 2021
Driver: 10 mm dynamic; 7 mm dynamic
Driver type: dynamic; dynamic
Driver size: 10 mm; 7 mm
Drivers per side: 1; 1
Frequency response: 5 Hz - 35 kHz; 5 Hz - 48 kHz
Impedance: 32 Ω; 18 Ω
Sensitivity: 111 dB/mW; 123 dB/mW
Bluetooth: -; 5.x
Multipoint pairing: -; No
Wireless charging: -; No
Active noise cancelling: -; No
ANC type: -; none
Transparency mode: -; No
Companion app: -; No
Custom EQ: -; No
Wear detection: -; No
Controls: -; none
Weight: 13.4 g; 4 g
Water resistance: -; none
Foldable: -; No
Detachable cable: -; Yes
USB-C: -; No
Connector: 2-pin 0.78 mm; MMCX

Specification comparison of Meze ASTRU vs Sennheiser IE 900
Spec	Meze ASTRU	Sennheiser IE 900
Type	Wired IEMs	Wired IEMs
Price (USD)	$900	$1,300
HearWiki score	Not scored	84 / 100 Great
Released	2025	2021
Audio
Driver	10 mm dynamic	7 mm dynamic
Driver type	dynamic	dynamic
Driver size	10 mm	7 mm
Drivers per side	1	1
Frequency response	5 Hz - 35 kHz	5 Hz - 48 kHz
Impedance	32 Ω	18 Ω
Sensitivity	111 dB/mW	123 dB/mW
Wireless
Bluetooth	-	5.x
Multipoint pairing	-	No
Battery
Wireless charging	-	No
Features
Active noise cancelling	-	No
ANC type	-	none
Transparency mode	-	No
Companion app	-	No
Custom EQ	-	No
Wear detection	-	No
Controls	-	none
Design
Weight	13.4 g	4 g
Water resistance	-	none
Foldable	-	No
Detachable cable	-	Yes
USB-C	-	No
Connector	2-pin 0.78 mm	MMCX

What reviewers said

Meze ASTRU

No summary yet - we haven't aggregated enough reviews.

Sennheiser IE 900

The Sennheiser IE 900 is a flagship single-dynamic-driver in-ear monitor that delivers exceptional clarity, imaging, and a coherent, natural timbre for its price. Its compact, premium build and comfortable fit make it a refined choice for critical listening, though it lacks wireless features and has some practical drawbacks like cable noise.

Pro:Reference-grade detail and precise imaging
Pro:Natural, coherent single-driver sound
Pro:Premium build and lightweight comfort

Con:Very expensive for limited feature set
Con:No wireless, ANC, or app support
Con:Cable noise can be noticeable

Summaries are AI-condensed and paraphrased from published reviews and specs - not original hands-on testing. More on our method.

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