7Hz x HBB Elua VS KZ Duet

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

Home Ranking Compare IEMs

7Hz x HBB Elua and KZ Duet are in-ear monitors. 7Hz x HBB Elua costs $29 while KZ Duet costs $30. KZ Duet is $1 more expensive. KZ Duet holds a decisive 1.5-point edge in reviewer scores (4.9 vs 6.4). KZ Duet has significantly better bass with a 2.5-point edge, KZ Duet has significantly better mids with a 1.7-point edge, KZ Duet has significantly better treble with a 2.8-point edge, KZ Duet has significantly better dynamics with a 2.9-point edge, KZ Duet has better soundstage with a 0.9-point edge, KZ Duet has significantly better details with a 2.6-point edge and KZ Duet has significantly better imaging with a 2.8-point edge.

Insights

Metric 7Hz x HBB Elua KZ Duet
Bass 4 6.5
Mids 4.3 5.9
Treble 3.3 6
Details 4.5 7.1
Soundstage 5.3 6.2
Imaging 4.5 7.3
Dynamics 4 6.9
Tonality 5.2 5.9
Technicalities 4.3 6.1
Take these comparisons with a grain of salt—we don't have enough KZ Duet reviews saved yet to provide an unbiased result.

7Hz x HBB Elua Aggregated Review Score

Average Reviewer Scores

Z-Reviews
Jaytiss Shuwa-T
Jays Audio
Audio Amigo
Head-Fi.org

Average Reviewer Score:

4.9

Generally Unfavorable

KZ Duet Aggregated Review Score

Average Reviewer Scores

Paul Wasabii Jaytiss

Average Reviewer Score:

6.4

Mixed to Positive

Reviews Comparison

7Hz x HBB Elua reviewed by Jaytiss

Jaytiss 4.8 Reviewer Score
C Tuning
D Tech
Nice little bass cannon, you can crank it and it doesn't hurt.

Jaytiss original ranking

Jaytiss Youtube Channel
Mids: C+ Treble: D Dynamics: C- Soundstage: B

KZ Duet reviewed by Jaytiss

Jaytiss 6 Reviewer Score
C+ Tuning
C+ Tech
Build quality is Earbud, I'd recommend the USB-C unless you need the wired.

Jaytiss original ranking

Jaytiss Youtube Channel
Mids: C+ Treble: C+ Dynamics: A- Soundstage: C+
YouTube video thumbnail

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7Hz x HBB Elua (more reviews)

7Hz x HBB Elua reviewed by Audio Amigo

Audio Amigo 6 * score rescaled + normalized
Deep, warm, bassy sound with suprisingly energetic treble. Fun Set. Build quality is a little sub-par at this price point.

Audio Amigo original ranking

Audio Amigo Youtube Channel
YouTube video thumbnail

7Hz x HBB Elua reviewed by Jays Audio

Jays Audio 5 Reviewer Score
A- Tuning
B- Tech
A fun bassy v-shape. Mini HBB Punch. Use deep fitting tips.

Jays Audio original ranking

Jays Audio Youtube Channel

7Hz x HBB Elua reviewed by Shuwa-T

Shuwa-T 4.1 Reviewer Score
D+ Tuning
C Tech
V shape signature without the benefits of v shape signatures; muddy bass and sharp treble

Shuwa-T original ranking

Shuwa-T Website

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

7Hz x HBB Elua reviewed by Z-Reviews

Z-Reviews 2 * score rescaled + normalized
check links for more info:

Z-Reviews original ranking

Z-Reviews Youtube Channel
YouTube video thumbnail

7Hz x HBB Elua reviewed by Head-Fi.org

Head-Fi.org 7.3 * score rescaled + normalized
11 community members have rated the 7Hz x HBB ELUA at an average of 3.9/5 on Head-Fi. Overall sentiment: Strongly Favorable.

URL to full Review

Head-Fi.org original ranking

KZ Duet (more reviews)

KZ Duet reviewed by Paul Wasabii

Paul Wasabii 6.8 * Score computed by IEMRanking.com
B+ Tuning
A- Tech
YouTube video thumbnail
Dual dynamic drivers in an earbud style shell deliver tight, fast bass with clear mids and lively treble that suit both music and gaming; sub-bass weight is modest. The optional DSP dongle is handy and the stage is impressively wide for the price. Clean, sharp imaging with big projected stage and tight, fast bass makes it good for both music and gaming. Sub-bass is light and the mid/treble edge can read a bit BA-like or fatiguing for some listeners.
Youtube Video Summary

KZ Duet pairs a 10 mm driver with an 8 mm unit in an earbud form factor, plus an in-ear sleeve that improves seal and isolation. The result is a dual feast of music and gaming: fuller low end from the big driver and Libra X-style clarity up top. It scales with a better source, while the cheap DSP dongle adds usable presets, making the package practical and comfortable.

Bass is tight and fast rather than rumbly, trading sub-bass slam for cleanliness that helps imaging. The mids carry some warmth to ~300 Hz and then tilt toward a sharper, BA-like clarity that favors voices and positional cues. Treble is boosted for energy but kept non-peaky, yielding a fun V-lean that suits EDM and shooters alike. Stage projects big, with crisp edges and stable placement; overall balance feels more polished than recent KZ gaming-centric releases.

Bass: B+ Mids: B+ Treble: A- Dynamics: B+ Soundstage: A- Details: A- Imaging: A-

Paul Wasabii original ranking

Paul Wasabii Youtube Channel

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7Hz x HBB Elua User Review Score

Average User Scores

Average User Score: n/a

Based on 0 user reviews

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KZ Duet User Review Score

Average User Scores

Average User Score: n/a

Based on 0 user reviews

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7Hz x HBB Elua Gaming Score

Gaming Score & Grade

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

Gaming Score

4.6

Gaming Grade

C

KZ Duet Gaming Score

Gaming Score & Grade

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

Gaming Score

6

Gaming Grade

B

7Hz x HBB Elua Scorings

Average Technical & Tuning Grades

Average Tunign Grade

C+
  • The tuning leans easygoing, yet occasional unevenness nudges it away from greatness. A bit of EQ polish can smooth things nicely.

Average Technical Grade

C-
  • Textural information blurs together, making the stage feel pinched and gray. Instrument edges blur together frequently.
Bass C-
Expect a conservative bass profile that maintains order but little excitement. Basslines track along but rarely stand out.
Mids C-
It delivers a workable midrange that could benefit from smoother transitions. Timbre isn't quite convincing yet.
Treble D
Treble response is uneven, jumping between dull spots and sharp peaks. Peaks poke out unpredictably.
Dynamics C-
Dynamics are average—competent yet lacking real excitement. It keeps music listenable but uninspiring.
Soundstage C+
It pushes sound outward confidently while leaving height development as an unfinished idea. Height remains subtle but detectable.
Details C
The presentation is fine for casual listening but leaves refinement on the table. There's some grain on quieter elements.
Imaging C
Depth hints are present though they rarely extend far beyond the stage front. Movement effects are understandable.
Gaming C
Minimal environmental definition provides only general audio cues. Suitable for games where positioning isn't critical.

KZ Duet Scorings

Average Technical & Tuning Grades

Average Tunign Grade

B-
  • Tonality is generally agreeable, though a few bumps remind you of its limits. Certain tracks spotlight its tonal quirks.

Average Technical Grade

B
  • An honest, middle-of-the-road performance preserves structure without chasing micro-detail. It's respectable for everyday listening sessions.
Bass B+
You get a lively bass response that balances energy with discipline. It balances punch with respectable control.
Mids B-
Expect a competent midrange that keeps vocals grounded and instruments clear. Tone is acceptable across multiple genres.
Treble B
Treble is articulate and clean, adding excitement without harshness. It adds sparkle without harshness.
Dynamics B+
You get confident dynamics that track both macro swings and rhythmic drive. There's life in every crescendo.
Soundstage B
Lateral spread stretches comfortably while front/back cues start to feel convincing. You can trace front-to-back movement.
Details A-
Resolution feels both high and relaxed, capturing nuance with ease. There's zero smearing even at high volume.
Imaging A-
You can literally point to where sounds originate across the stage. You can point to where sounds originate.
Gaming B
Decent spatial awareness for fundamental positioning. Creates satisfying atmosphere in story-driven games while handling basic directional cues.

7Hz x HBB Elua User Reviews

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KZ Duet User Reviews

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