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Campfire Audio Astrolith - Dual Planar IEM vs Symphonium Audio Crimson: which should you buy?

On aggregated review scores the Campfire Audio Astrolith - Dual Planar IEM comes out ahead with a HearWiki score of 81. The full breakdown - sub-scores, specs and what reviewers actually said - is below.

Our pick: Campfire Audio Astrolith - Dual Planar IEM - Great overall at around $2199.

Score breakdown

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

Campfire Audio Astrolith - Dual Planar IEM leads on 2 of 4 measures.

  • Campfire Audio Astrolith - Dual Planar IEM
  • Symphonium Audio Crimson
HearWiki score
81
76
Sound
9.0
8.5
Value
6.5
6.5
Price (USD)
$2,200
$1,500

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

Campfire Audio Astrolith - Dual Planar IEM (2024) against Symphonium Audio Crimson (2023). These are 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.

  • Astrolith - Dual Planar IEM20241 yr newer
  • Crimson2023

Specifications

Astrolith - Dual Planar IEMCrimson
Type
Wired IEMs
Wired IEMs
Price (USD)
$2,200
$1,500
HearWiki score
81
76
Released
2024
2023
Availability
Discontinued
Discontinued
Driver
2× 14.2 mm planar magnetic
balanced armature
Driver type
planar
balanced-armature
Driver size
14.2 mm
-
Drivers per side
2
-
Frequency response
5 Hz - 25 kHz
-
Impedance
8.2 Ω
6 Ω
Sensitivity
94 dB/mW
-
Active noise cancelling
No
-
Voice assistant
No
-
Weight
-
7 g
Detachable cable
Yes
-
Connector
4.4 mm balanced
2-pin 0.78 mm

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

Symphonium Audio Crimson

The Symphonium Audio Crimson is a premium all-balanced-armature IEM that offers flagship-level clarity, dynamics, and a broad soundstage wrapped in a lively, U-shaped tuning. Its performance is highly sensitive to pairing and fit, rewarding careful source selection and tip choices with a spacious, energetic listen, though it can turn bright if not seated properly. At around $1,499, it targets enthusiasts seeking a technically impressive yet colored reference sound.

  • Pro:Excellent detail retrieval and instrument separation
  • Pro:Spacious, immersive soundstage
  • Pro:Energetic, engaging U-shaped tuning
  • Con:Highly source-dependent, needs good gear
  • Con:Can sound sharp with a shallow fit
  • Con:Low 6-ohm impedance may be tricky to drive well

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.

New comparisonCampfire Audio Astrolith - Dual Planar IEMSymphonium Audio Crimson