CCA HYDRO and Kiwi Ears ETUDE use 2DD+8BA and 1DD+3BA+1VT driver setups respectively. CCA HYDRO costs $120 while Kiwi Ears ETUDE costs $119. CCA HYDRO is $1 more expensive. CCA HYDRO holds a clear 0.5-point edge in reviewer scores (7.3 vs 6.9).
Insights
Metric | CCA HYDRO | Kiwi Ears ETUDE |
---|---|---|
Mids | 6 | 6 |
Treble | 5 | 5 |
Soundstage | 6 | 6 |
Dynamics | 7 | 7 |
Tonality | 6.8 | 6.9 |
Technicalities | 6.3 | 6.4 |
CCA HYDRO Aggregated Review Score
Average Reviewer Scores
Average Reviewer Score:
7.3Generally Favorable
Kiwi Ears ETUDE Aggregated Review Score
Average Reviewer Scores
Average Reviewer Score:
6.9Cautiously Favorable
Reviews Comparison
CCA HYDRO reviewed by Jaytiss
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.
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Kiwi Ears ETUDE reviewed by Jaytiss
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CCA HYDRO reviewed by Jays Audio
Jays Audio Youtube Channel
Kiwi Ears ETUDE reviewed by Jays Audio
Jays Audio Youtube Channel
CCA HYDRO reviewed by Head-Fi.org
Kiwi Ears ETUDE reviewed by Head-Fi.org
Kiwi Ears ETUDE (more reviews)
Kiwi Ears ETUDE reviewed by Z-Reviews
2025-08-09Kiwi Ears ETUDE reviewed by Web Search
2025-07-12
The Kiwi Ears Étude offers a distinctive listening experience centered around its Kiwi Vibration Transducer (KVT), which adds a subtle tactile sensation to bass frequencies. This isn’t a gimmick—it lends sustained notes like bass guitars or synth lines an organic, textured quality that feels immersive without overpowering the mix. That said, the KVT can introduce mild reverb in lower-mid frequencies, occasionally coloring male vocals in podcasts or sparse tracks.
Tuning-wise, the Étude follows a mild V-shaped signature with an 8dB sub-bass lift and smooth, relaxed treble. The midrange remains relatively neutral, though vocals can lack body in acoustic tracks without bass accompaniment. While the beryllium dynamic driver delivers punchy kicks, the real star is the KVT’s physicality, which creates a holographic low-end that enhances EDM and hip-hop. Technical performance is competent for the price, with average soundstage width and decent separation, though imaging lacks precision.
Fit may be divisive due to the large shells housing the transducer, and the nozzle’s lack of ridges limits eartip options. Source pairing is critical too: the KVT scales noticeably with powerful amplification, unlocking fuller dynamics. Despite quirks, the Étude succeeds as a fun, genre-specific IEM that stands out in a crowded market.
CCA HYDRO Details
Driver Configuration: 2DD+8BA
Tuning Type: V-Shaped
Brand: CCA Top CCA IEMs
Price (Msrp): $120
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Kiwi Ears ETUDE Details
Driver Configuration: 1DD+3BA+1VT
Tuning Type: V-Shaped
Brand: Kiwi Ears Top Kiwi Ears IEMs
Price (Msrp): $119
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CCA HYDRO User Review Score
Average User Scores
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Kiwi Ears ETUDE User Review Score
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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
6.4Gaming Grade
BKiwi Ears ETUDE Gaming Score

Gaming Score & Grade
- The gaming score is prioritizing technical capabilities of the IEM (Separation, Layering, Soundstage) and good value.
Gaming Score
6.6Gaming Grade
B+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.
Kiwi Ears ETUDE Scorings
Average Technical & Tuning Grades
Average Tunign Grade
B+- A mostly enjoyable signature keeps things listenable despite a handful of quirks. It handles most playlists without major complaints.
Average Technical Grade
B- The presentation is steady if unspectacular, holding onto essential details when the music stays simple. Fine details occasionally slip through the cracks.
CCA HYDRO User Reviews
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