Wired IEMs
Campfire Audio Astrolith - Dual Planar IEM
87Outstanding
$2199
Full review dataCampfire Audio Astrolith - Dual Planar IEM vs Sennheiser IE 900: which should you buy?
On aggregated review scores the Campfire Audio Astrolith - Dual Planar IEM comes out ahead with an HearWiki score of 87. The full breakdown - sub-scores, specs and what reviewers actually said - is below.
Our pick: Campfire Audio Astrolith - Dual Planar IEM - Outstanding overall at around $2199.
Wired IEMs
Sennheiser IE 900
84Great
$1300
Full review dataScore breakdown
Each axis is a 0–10 blend of what reviewers scored, not a lab measurement.
Campfire Audio Astrolith - Dual Planar IEM
Sound9.0
Value6.5
Sennheiser IE 900
Sound9.0
Value6.5
Specifications
| Spec | Campfire Audio Astrolith - Dual Planar IEM | Sennheiser IE 900 |
|---|---|---|
| Type | Wired IEMs | Wired IEMs |
| Price (USD) | $2199 | $1300 |
| HearWiki score | 87 / 100 · Outstanding | 84 / 100 · Great |
| Released | 2024 | 2021 |
| Audio | ||
| Driver | Dual Planar | dynamic TrueResponse transducers |
| Driver size | 14.2 mm | 7 mm |
| Drivers per side | 2 | 1 |
| Frequency response | 5Hz-25kHz | 5Hz-48kHz |
| Impedance | 8.2 Ω | 18 Ω |
| Sensitivity | 94 dB/mW | 123 dB/mW |
| Wireless | ||
| Bluetooth | - | 5.x |
| Bluetooth version | - | none |
| Codecs | - | none |
| Multipoint pairing | No | No |
| Battery | ||
| Wireless charging | - | No |
| Features | ||
| Active noise cancelling | No | No |
| ANC type | - | none |
| Transparency mode | - | No |
| Companion app | - | No |
| Custom EQ | - | No |
| Wear detection | - | No |
| Controls | - | none |
| Voice assistant | none | - |
| Design | ||
| Weight | - | 4 g |
| Water resistance | - | none |
| Foldable | - | No |
| Detachable cable | Yes | Yes |
| USB-C | - | No |
What reviewers said
Campfire Audio Astrolith - Dual Planar IEM
The Campfire Audio Astrolith is a premium dual-planar IEM that delivers a fast, clear, and highly detailed sound with impressive staging and technical precision. Its nearly flat impedance and very low distortion make it a strong performer, though it benefits from quality sources and has a couple of minor ergonomic quirks. Overall, it's a notable step forward in the brand's planar lineup, offering a cohesive and resolving listen for those seeking top-tier wired performance.
- Pro:Exceptional speed and clarity across the frequency range
- Pro:Very low distortion and flat impedance for consistent performance
- Pro:Wide, well-defined soundstage with precise imaging
- Con:Slight mid-bass bloom can color certain tracks
- Con:Stock ear tips are not very good and may need replacement
- Con:Best results require a high-quality source or amplifier
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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