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64 Audio U12t vs Campfire Audio Astrolith - Dual Planar IEM: 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.

  • 64 Audio U12t
  • Campfire Audio Astrolith - Dual Planar IEM
HearWiki score
80
81
Sound
9.0
9.0
Value
6.0
6.5
Price (USD)
$2,000
$2,200

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 6 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 6 years between them, that is a thin return - treat this as a restyle rather than a new platform.

  • U12t2018
  • Astrolith - Dual Planar IEM20246 yr newer

Specifications

U12tAstrolith - Dual Planar IEM
Type
Wired IEMs
Wired IEMs
Price (USD)
$2,000
$2,200
HearWiki score
80
81
Released
2018
2024
Availability
Discontinued
Discontinued
Driver
12BA
2× 14.2 mm planar magnetic
Driver type
balanced-armature
planar
Driver configuration
12BA
-
Driver size
-
14.2 mm
Drivers per side
12
2
Frequency response
-
5 Hz - 25 kHz
Impedance
12.6 Ω
8.2 Ω
Sensitivity
108 dB/mW
94 dB/mW
Active noise cancelling
No
No
Voice assistant
-
No
Detachable cable
-
Yes
Connector
2-pin 0.78 mm
4.4 mm balanced

What reviewers said

64 Audio U12t

The 64 Audio U12t is a flagship 12-driver balanced-armature in-ear monitor that delivers a transparent, highly resolving sound with a neutral midrange, deep bass extension, and airy highs. It offers an expansive, three-dimensional soundstage with precise imaging, while its swappable APEX modules allow users to alter bass response and pressure relief. Despite its premium price and some minor treble quirks, it remains a benchmark all-rounder for critical listening.

  • Pro:Exceptional clarity and resolution
  • Pro:Powerful, extended low-end
  • Pro:Wide, immersive soundstage
  • Con:Very expensive
  • Con:Minor treble peakiness in some cases
  • Con:Requires a quality source to shine

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

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

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New comparison64 Audio U12tCampfire Audio Astrolith - Dual Planar IEM