Wired IEMs
Campfire Audio Astrolith - Dual Planar IEM
80Outstanding
$2,200
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 a HearWiki score of 80. 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
73Great
$1,580
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 leads on 3 of 4 measures.
- Campfire Audio Astrolith - Dual Planar IEM
- Sennheiser IE 900
HearWiki score
80
73
Sound
9.0
8.7
Value
6.4
4.7
Price (USD)
$2,200
$1,580
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 Campfire Audio Astrolith - Dual Planar IEM is 3 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 3 years between them, that is a thin return - treat this as a restyle rather than a new platform.
- Astrolith - Dual Planar IEM20243 yr newer
- IE 9002021
Specifications
Astrolith - Dual Planar IEMIE 900
- Type
- Wired IEMs
- Wired IEMs
- Price (USD)
- $2,200
- $1,580
- HearWiki score
- 80
- 73
- Released
- 2024
- 2021
- Availability
- Still sold new
- Still sold new
- Driver
- 2× 14.2 mm planar magnetic
- 7 mm dynamic
- Driver type
- planar
- dynamic
- Driver size
- 14.2 mm
- 7 mm
- Drivers per side
- 2
- 1
- Frequency response
- 5 Hz - 25 kHz
- 5 Hz - 48 kHz
- Impedance
- 8.2 Ω
- 18 Ω
- Sensitivity
- 94 dB/mW
- 123 dB/mW
- Bluetooth
- -
- 5.x
- Multipoint pairing
- -
- No
- Wireless charging
- -
- No
- Active noise cancelling
- No
- No
- ANC type
- -
- none
- Transparency mode
- -
- No
- Companion app
- -
- No
- Custom EQ
- -
- No
- Wear detection
- -
- No
- Controls
- -
- none
- Voice assistant
- No
- -
- Weight
- -
- 4 g
- Water resistance
- -
- none
- Foldable
- -
- No
- Detachable cable
- Yes
- Yes
- USB-C
- -
- No
- Connector
- 4.4 mm balanced
- MMCX
What reviewers said
Campfire Audio Astrolith - Dual Planar IEM
The Campfire Audio Astrolith is a premium dual-planar IEM that delivers exceptional speed, clarity, and technical resolution, making it a standout in the brand's lineup. Its nearly flat impedance, low distortion, and high sensitivity pair well with quality sources, though its low 8.2-ohm impedance may require a capable amplifier for optimal performance.
- Pro:Exceptional speed and transient response
- Pro:Highly resolving and detailed sound
- Pro:Cohesive dual-planar driver integration
- Con:Low impedance may need a powerful source
- Con:Stock ear tips are underwhelming
- Con:Mid-bass can exhibit slight bloom
Sennheiser IE 900
The Sennheiser IE 900 is a premium single-dynamic-driver IEM that delivers exceptional clarity, detail, and a coherent, natural soundstage for its size. Its lightweight, premium build and precise imaging make it a reference-grade choice, though its high price and lack of features like ANC or wireless support mean it's aimed squarely at wired audiophiles. Overall, it's an impressive technical performer that earns cautious praise rather than an unqualified recommendation at its cost.
- Pro:Outstanding detail retrieval and clarity
- Pro:Coherent, natural timbre from a single dynamic driver
- Pro:Lightweight and premium build quality
- Con:Very high price for a wired-only IEM
- Con:No noise cancellation or wireless features
- Con:Cable noise can be noticeable during use
Summaries are AI-condensed and paraphrased from published reviews and specs - not original hands-on testing. More on our method.
Compare something else
Swap either side out, or start again from the picker.