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Campfire Audio Andromeda S vs THIEAUDIO Monarch MKIV: which should you buy?

On aggregated review scores the THIEAUDIO Monarch MKIV comes out ahead with a HearWiki score of 84. The full breakdown - sub-scores, specs and what reviewers actually said - is below.

Our pick: THIEAUDIO Monarch MKIV - Outstanding overall at around $1149.

Score breakdown

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

THIEAUDIO Monarch MKIV leads on 3 of 4 measures.

  • Campfire Audio Andromeda S
  • THIEAUDIO Monarch MKIV
HearWiki score
61
84
Sound
8.1
9.4
Value
-
7.6
Price (USD)
$1,100
$1,150

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 THIEAUDIO Monarch MKIV 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.

  • Andromeda S2019
  • Monarch MKIV20256 yr newer

Specifications

Andromeda SMonarch MKIV
Type
Wired IEMs
Wired IEMs
Price (USD)
$1,100
$1,150
HearWiki score
61
84
Released
2019
2025
Availability
Discontinued
Sold new
Driver
5× balanced armature
2DD + 6BA + 2EST tribrid
Driver type
balanced-armature
tribrid
Driver configuration
-
2DD + 6BA + 2EST
Driver size
-
8 mm
Drivers per side
5
10
Frequency response
10 Hz - 28 kHz
-
Impedance
6.4 Ω
-
Sensitivity
112.8 dB/mW
-
Active noise cancelling
No
-
Weight
5.9 g
-
Detachable cable
Yes
-
USB-C
No
-
Model code
Andromeda Emerald Sea
-

What reviewers said

Campfire Audio Andromeda S

The Campfire Audio Andromeda S is a wired, multi-driver in-ear monitor built around five balanced armature drivers, delivering a highly detailed and analytical sound signature. With a low 6.4-ohm impedance and high sensitivity, it pairs well with quality sources, though it lacks wireless or noise-canceling features. Its compact, lightweight build and detachable cable make it a portable reference option for critical listening.

  • Pro:Extremely detailed and resolving sound
  • Pro:Lightweight and comfortable fit
  • Pro:Detachable cable for easy replacement or upgrade
  • Con:Sensitive to source impedance and may hiss with noisy gear
  • Con:Lacks wireless connectivity and noise cancellation
  • Con:Upper mids can sound harsh or aggressive to some ears

THIEAUDIO Monarch MKIV

The Monarch MKIV is a flagship in-ear monitor built around a ten-driver tribrid configuration, blending dual 8mm dynamic drivers, six balanced armatures, and two electrostatic tweeters. It offers a studio-neutral sound signature with an additional switchable bass-boost mode for listeners who prefer a more impactful low end.

  • Pro:Reference-grade neutral tuning with excellent clarity
  • Pro:Versatile bass boost mode adds flexibility
  • Pro:Detailed and extended treble from electrostatic tweeters
  • Con:High price point limits accessibility
  • Con:Requires a capable source to perform at its best
  • Con:Large shell may not suit smaller ears

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

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