Campfire Audio Moon Rover 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.

Wired IEMs

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 Moon Rover
THIEAUDIO Monarch MKIV

HearWiki score

Sound

8.4

9.4

Value

7.0

7.6

Price (USD)

$900

$1,150

Specifications

Moon RoverMonarch MKIV

Type: Wired IEMs; Wired IEMs
Price (USD): $900; $1,150
HearWiki score: 73; 84
Released: 2024; 2025
Availability: Discontinued; Sold new
Driver: 12 mm planar magnetic; 2DD + 6BA + 2EST tribrid
Driver type: planar; tribrid
Driver configuration: -; 2DD + 6BA + 2EST
Driver size: 12 mm; 8 mm
Drivers per side: 1; 10
Frequency response: 5 Hz - 20 kHz; -
Impedance: 22.5 Ω; -
Sensitivity: 94 dB/mW; -
Detachable cable: Yes; -
Connector: 4.4 mm balanced; -

Specification comparison of Campfire Audio Moon Rover vs THIEAUDIO Monarch MKIV
Spec	Campfire Audio Moon Rover	THIEAUDIO Monarch MKIV
Type	Wired IEMs	Wired IEMs
Price (USD)	$900	$1,150
HearWiki score	73 / 100 Great	84 / 100 Outstanding
Released	2024	2025
Audio
Driver	12 mm planar magnetic	2DD + 6BA + 2EST tribrid
Driver type	planar	tribrid
Driver configuration	-	2DD + 6BA + 2EST
Driver size	12 mm	8 mm
Drivers per side	1	10
Frequency response	5 Hz - 20 kHz	-
Impedance	22.5 Ω	-
Sensitivity	94 dB/mW	-
Design
Detachable cable	Yes	-
Connector	4.4 mm balanced	-

What reviewers said

Campfire Audio Moon Rover

The Campfire Audio Moon Rover is a limited-edition, single planar magnetic IEM that delivers a technically capable, well-balanced, and mature sound signature with a notably spacious presentation. Its premium build quality and comprehensive accessory package enhance its appeal as a high-end, flagship-style release for discerning listeners. While it excels in refinement and clarity, it may not offer the most aggressive dynamics or raw punch compared to some peers.

Pro:Spacious, well-defined soundstage
Pro:Premium build quality and accessories
Pro:Detailed, neutral, and mature tuning

Con:Lacks some impact and punch
Con:Midrange clarity slightly less than top rivals
Con:High price for a single-driver design

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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