HZSOUND Heart Mirror Pro VS GS Audio GD3A

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

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HZSOUND Heart Mirror Pro and GS Audio GD3A are in-ear monitors. HZSOUND Heart Mirror Pro costs $80 while GS Audio GD3A costs $86. GS Audio GD3A is $6 more expensive. GS Audio GD3A holds a decisive 1.7-point edge in reviewer scores (5.2 vs 7). GS Audio GD3A has significantly better bass with a 3.8-point edge, GS Audio GD3A has significantly better mids with a 3.6-point edge, GS Audio GD3A has significantly better treble with a 3.3-point edge, GS Audio GD3A has significantly better details with a 3.4-point edge and GS Audio GD3A has significantly better imaging with a 3.3-point edge.

Insights

Metric HZSOUND Heart Mirror Pro GS Audio GD3A
Bass 3 6.8
Mids 3 6.6
Treble 3 6.3
Details 3 6.4
Soundstage 5.2 6.2
Imaging 3 6.3
Dynamics 5.2 6.5
Tonality 4.8 7
Technicalities 4.3 6.4
Take these comparisons with a grain of salt—we don't have enough HZSOUND Heart Mirror Pro and GS Audio GD3A reviews saved yet to provide an unbiased result.

HZSOUND Heart Mirror Pro Aggregated Review Score

Average Reviewer Scores

Nymz
Crin
Head-Fi.org

Average Reviewer Score:

5.2

Mixed to Negative

GS Audio GD3A Aggregated Review Score

Average Reviewer Scores

Web Search
Super* Review Head-Fi.org

Average Reviewer Score:

7

Cautiously Favorable

Reviews Comparison

HZSOUND Heart Mirror Pro reviewed by Head-Fi.org

Head-Fi.org 7.3 * score rescaled + normalized
8 community members have rated the HZSound Heart Mirror Pro at an average of 3.9/5 on Head-Fi. Overall sentiment: Strongly Favorable.

URL to full Review

Head-Fi.org original ranking

GS Audio GD3A reviewed by Head-Fi.org

Head-Fi.org 7.2 * score rescaled + normalized
2 community members have rated the GS Audio GD3A at an average of 4.5/5 on Head-Fi. Overall sentiment: Outstanding.

URL to full Review

Head-Fi.org original ranking

HZSOUND Heart Mirror Pro (more reviews)

HZSOUND Heart Mirror Pro reviewed by Crin

Crin 5.5 Reviewer Score
B+ Tuning
B- Tech
check links for more info:

Crin original ranking

Crin Youtube Channel

HZSOUND Heart Mirror Pro reviewed by Nymz

Nymz 2.9 Reviewer Score
D Tuning
D Tech
check links for more info:

Nymz original ranking

Nymz Website

Bass: D Mids: D Treble: D Details: D Imaging: D

GS Audio GD3A (more reviews)

GS Audio GD3A reviewed by Super* Review

Super* Review 7* * score rescaled + normalized
check links for more info:

Super* Review original ranking

Super* Review Youtube Channel

GS Audio GD3A reviewed by Web Search

uses AI-Search to turn user, reddit and head-fi reviews into clear, concise summaries.
Web Search 6.7 Reviewer Score
A- Tuning
B Tech

The GS Audio GD3A is a budget hybrid with a 1DD+2BA configuration that is reported to be easy to drive from modest sources, keeping entry barriers low for new listeners. Street pricing has historically hovered around $86–$90 via AliExpress listings shared in community threads, positioning it firmly in the sub-$100 bracket.

Tonally, the GD3A skews neutral with a sub-bass lift: community impressions describe bass that “digs very deep” and provides a supportive foundation without obvious bloat, while mids remain clear and the treble avoids harshness. Reviewers also highlight natural timbre and an overall non-fatiguing presentation for long sessions.

On the technical side, users note clean, textured bass and solid clarity for the price, though stage size and micro-detail are only average by enthusiast standards. Discussions referencing measurements also point to limited upper-treble “air” (roll-off near ~10 kHz), which slightly curbs shimmer but helps keep brightness in check. Given its asking price, the GD3A offers competitive resolution and imaging—just don’t expect it to match mid-fi hybrids several tiers up.

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

HZSOUND Heart Mirror Pro User Review Score

Average User Scores

Average User Score: n/a

Based on 0 user reviews

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GS Audio GD3A 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!

HZSOUND Heart Mirror Pro Gaming Score

Gaming Score & Grade

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

Gaming Score

4.4

Gaming Grade

C-

GS Audio GD3A Gaming Score

Gaming Score & Grade

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

Gaming Score

6.6

Gaming Grade

B+

HZSOUND Heart Mirror Pro 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-
  • The tuning renders a cramped window into the music, with nuance fading fast. Expect grainy textures to creep in.
Bass D
The bass sits quietly in the background, providing only faint support. Live recordings lose their stage thump.
Mids D
Tonal balance in the mids is erratic, with certain notes leaping out unnaturally. Certain notes leap out while others vanish.
Treble D
Treble response is uneven, jumping between dull spots and sharp peaks. Peaks poke out unpredictably.
Details D
Modest detail presentation that sacrifices texture and masks subtle nuances. It conveys the basics but not the nuance.
Imaging D
Stereo cues appear but wobble, leaving the panorama feeling imprecise. Center image lacks solidity.
Gaming C-
Minimal environmental definition provides only general audio cues. Suitable for games where positioning isn't critical.

GS Audio GD3A Scorings

Average Technical & Tuning Grades

Average Tunign Grade

A-
  • The tonal character feels settled and versatile, with just a few gentle bumps. You can listen for hours without fatigue.

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+
Expect a solid thump that keeps the rhythm engaging yet controlled. Sub-bass presence is supportive, not overwhelming.
Mids B+
Expect a confident midrange that keeps details audible without harshness. Acoustic arrangements sound engaging.
Treble B
The top end is engaging and airy, yet never overbearing. Brass and strings feel energetic.
Dynamics B+
Expect energetic dynamics that bring music to life without harshness. It injects enthusiasm into fast music.
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.
Details B
You hear inner textures easily, even when the arrangement piles on layers. You can hear subtle studio effects.
Imaging B
Instrument boundaries feel well carved, avoiding smear or drift. Instrument outlines feel well-defined.
Gaming B+
Respectable environmental presentation favors atmosphere over precision. Detects obvious directional cues while conveying game world ambiance.

HZSOUND Heart Mirror Pro User Reviews

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GS Audio GD3A User Reviews

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