Symphonium Audio Crimson vs Thieaudio Valhalla: which should you buy?

On aggregated review scores the Thieaudio Valhalla comes out ahead with a HearWiki score of 81. The full breakdown - sub-scores, specs and what reviewers actually said - is below.

Our pick: Thieaudio Valhalla - Great overall at around $1999.

Wired IEMs

Score breakdown

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

Neither pulls ahead overall - they trade wins across the measures.

Symphonium Audio Crimson
Thieaudio Valhalla

HearWiki score

Sound

8.5

9.0

Value

6.5

6.0

Price (USD)

$1,500

$2,000

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 Valhalla is 2 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.

Crimson2023
Valhalla20252 yr newer

Specifications

CrimsonValhalla

Type: Wired IEMs; Wired IEMs
Price (USD): $1,500; $2,000
HearWiki score: 76; 81
Released: 2023; 2025
Availability: Discontinued; Sold new
Driver: balanced armature; 19× balanced armature
Driver type: balanced-armature; balanced-armature
Drivers per side: -; 19
Impedance: 6 Ω; 9 Ω
Active noise cancelling: -; No
Weight: 7 g; -
Connector: 2-pin 0.78 mm; -

Specification comparison of Symphonium Audio Crimson vs Thieaudio Valhalla
Spec	Symphonium Audio Crimson	Thieaudio Valhalla
Type	Wired IEMs	Wired IEMs
Price (USD)	$1,500	$2,000
HearWiki score	76 / 100 Great	81 / 100 Great
Released	2023	2025
Audio
Driver	balanced armature	19× balanced armature
Driver type	balanced-armature	balanced-armature
Drivers per side	-	19
Impedance	6 Ω	9 Ω
Features
Active noise cancelling	-	No
Design
Weight	7 g	-
Connector	2-pin 0.78 mm	-

What reviewers said

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

Thieaudio Valhalla

The Thieaudio Valhalla is a premium all-balanced-armature in-ear monitor that prioritizes technical clarity and precise sound staging. Its design focuses on delivering crisp, well-defined bass, transparent mids, and extended treble without harshness, making it a strong choice for analytical listening rather than a relaxed, warm signature. The build quality and fit are top-tier, reflecting its flagship status.

Pro:Exceptional detail retrieval and instrument separation
Pro:Clean, well-controlled bass with solid punch
Pro:Neutral yet engaging tuning across the frequency range

Con:Very high price point limits accessibility
Con:Low impedance may require a quality source to avoid hiss
Con:Not suited for listeners seeking a warm or laid-back sound

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 comparison Symphonium Audio Crimson Thieaudio Valhalla