Thieaudio Legacy 3 VS CCA HYDRO

IEM Comparison: Expert & Community Scores Side-by-Side

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Thieaudio Legacy 3 and CCA HYDRO use 1DD+2BA and 2DD+8BA driver setups respectively. Thieaudio Legacy 3 costs $120 while CCA HYDRO costs $120. CCA HYDRO holds a decisive 3.2-point edge in reviewer scores (4.1 vs 7.3). CCA HYDRO has significantly better mids with a 1.8-point edge, CCA HYDRO has significantly better treble with a 2-point edge, CCA HYDRO has significantly better dynamics with a 4-point edge and CCA HYDRO has significantly better soundstage with a 1-point edge.

Insights

Metric Thieaudio Legacy 3 CCA HYDRO
Bass 3.5 7.3
Mids 4.3 6
Treble 3 5
Details 4 7.3
Soundstage 5 6
Imaging 3.8 7.3
Dynamics 3 7
Tonality 4.4 6.8
Technicalities 4.3 6.3
Take these comparisons with a grain of salt—we don't have enough Thieaudio Legacy 3 and CCA HYDRO reviews saved yet to provide an unbiased result.

Thieaudio Legacy 3 Aggregated Review Score

Average Reviewer Scores

Average Reviewer Score:

4.1

Unfavorable


CCA HYDRO Aggregated Review Score

Average Reviewer Scores

Average Reviewer Score:

7.3

Generally Favorable


Reviews Comparison

Thieaudio Legacy 3 (more reviews)

Thieaudio Legacy 3 reviewed by Crin

Crin 5 Reviewer Score
B Tuning
C+ Tech
Balanced tonality with a laid-back signature, nothing much to fault nor to praise.

Crin original ranking

Crin Youtube Channel

Thieaudio Legacy 3 reviewed by Shuwa-T

Shuwa-T 4.2 Reviewer Score
D+ Tuning
C Tech
Comment: Pretty much average. Can sound muddy at times

Shuwa-T original ranking

Shuwa-T Website

Bass: C- Mids: D+ Treble: D Soundstage: C+ Details: C+ Imaging: C

Thieaudio Legacy 3 reviewed by Precogvision

Precogvision 3.2 Reviewer Score
D+ Tuning
D Tech
Pleasant tuning that's too dark for my preferences. Seems to have some QC issues.

Precogvision original ranking

Precogvision Youtube Channel
Bass: D Mids: C+ Treble: D Dynamics: D Details: D Imaging: D

CCA HYDRO (more reviews)

CCA HYDRO reviewed by Jaytiss

Jaytiss 7 Reviewer Score
B Tuning
C+ Tech
When this hits it's very fun. Insane value.
Youtube Video Summary

Build & fit hit above the price: a sleek, glossy shell that’s a bit of a fingerprint magnet but sits securely with a small nozzle and generally comfy ergonomics; only the backside contour may trip up a few ears. The stock QDC-style cable feels plush and durable—decidedly “world-class” at this tier. No case in the box, but that’s a minor nit when the overall presentation feels A1.

On the rig, the Hydro shows tight channel matching and a versatile tuning via dip switches. The curve echoes heavy-hitters—think a tasteful 2.5–3 kHz rise, a dip after, and robust sub-bass with real treble extension. Comparisons point toward Monarch/Annihilator territory for tonality cues, while still keeping its own flavor: weighty bass and sparkling air without mid-bass bloat. The result is genre-agnostic confidence—female/male vocals, instrumentals, metal, R&B, gaming, even movies—all come through clean, lively, and engaging.

The “problem”? Not the sound—sonically it’s a standout—but the brand baggage some attach to KZ/CCA. Set that aside and Hydro reads like a reckless trend-setter: a double-DD + 8BA hybrid that punches way up, credibly sparring with sets in the $500–$600 bracket while costing far less. With its fit, tuning, and value—plus that excellent cable—this is an easy recommendation for anyone chasing a musical, detailed, and switchable all-rounder.

Mids: B Treble: C+ Dynamics: A- Soundstage: B

Jaytiss original ranking

Jaytiss Youtube Channel
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CCA HYDRO reviewed by Jays Audio

Jays Audio 6.5 Reviewer Score
A Tuning
A Tech
The best KZ so far, tuning swithces allow lots of options. Good tech, all-rounder sound with bass boost, but, KZ.

Jays Audio original ranking

Jays Audio Youtube Channel

CCA HYDRO reviewed by Head-Fi.org

Head-Fi.org 8.5 * score rescaled + normalized
2 community members have rated the CCA Hydro at an average of 4.5/5 on Head-Fi. Overall sentiment: Outstanding.

URL to full Review

Head-Fi.org original ranking

Thieaudio Legacy 3 User Review Score

Average User Scores

Average User Score: n/a

Based on 0 user reviews

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CCA HYDRO User Review Score

Average User Scores

Average User Score: n/a

Based on 0 user reviews

No user reviews yet. Be the first one who writes a review!

Thieaudio Legacy 3 Gaming Score

Gaming Score & Grade

  • The gaming score is prioritizing technical capabilities of the IEM (Separation, Layering, Soundstage) and good value.

Gaming Score

4.3

Gaming Grade

C-

CCA HYDRO Gaming Score

Gaming Score & Grade

  • The gaming score is prioritizing technical capabilities of the IEM (Separation, Layering, Soundstage) and good value.

Gaming Score

6.4

Gaming Grade

B

Thieaudio Legacy 3 Scorings

Average Technical & Tuning Grades

Average Tunign Grade

C-
  • Expect a patchy tonal profile that makes instrumentation feel mismatched. EQ is almost mandatory to tame the response.

Average Technical Grade

C-
  • Textural information blurs together, making the stage feel pinched and gray. Instrument edges blur together frequently.
Bass D+
Impact feels muted, leaving the low end polite and underwhelming. You may find yourself reaching for EQ boosts.
Mids C-
It delivers a workable midrange that could benefit from smoother transitions. Timbre isn't quite convincing yet.
Treble D
Highs feel erratic, with dips and spikes that make the signature unpredictable. It alternates between splashy and dull.
Dynamics D
Dynamics come across throttled, leaving energetic moments underwhelming. Energetic passages land with a thud.
Soundstage C+
It pushes sound outward confidently while leaving height development as an unfinished idea. Height remains subtle but detectable.
Details C-
Nothing sounds offensive, yet nothing is etched sharply enough to captivate detail lovers. It's fine for casual listening sessions.
Imaging D+
It sketches positions loosely while allowing outlines to blur. Instrument outlines remain fuzzy.
Gaming C-
Minimal environmental definition provides only general audio cues. Suitable for games where positioning isn't critical.

CCA HYDRO Scorings

Average Technical & Tuning Grades

Average Tunign Grade

B+
  • It sounds pleasant overall, with some uneven spots that hint at room for refinement. Vocals remain pleasant despite the imperfections.

Average Technical Grade

B
  • It offers a competent showing, maintaining cohesion on straightforward arrangements. Complex passages start to challenge it, but never derail the show.
Mids B
Midrange presence is good, delivering clear vocals and solid texture. Voices come through with pleasing clarity.
Treble C+
Treble is decent, offering acceptable extension without harshness. It balances presence with a touch of restraint.
Dynamics A-
Dynamic performance is excellent, combining sharp transients with strong contrast. Transients snap with authority.
Soundstage B
The presentation supplies a believable venue outline where each instrument owns its pocket of space. The stage opens up nicely for live cuts.
Gaming B
Decent spatial awareness for fundamental positioning. Creates satisfying atmosphere in story-driven games while handling basic directional cues.

Thieaudio Legacy 3 User Reviews

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CCA HYDRO User Reviews

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