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Linner Mercury Expert Review

Budget OTCReleased 2023

Our lab measured the Linner Mercury across five standardized performance metrics using calibrated equipment and acoustic simulation. This independent assessment reveals how this budget OTC hearing aid performs under controlled test conditions.

See Price at Linner
Dr. Steve TaddeiDr. Steve Taddei, Au.D. — Lab Director & Reviewer
Dr. Abram BaileyDr. Abram Bailey, Au.D. — Fact Checker / Editor
How We Test
Linner Mercury Hero
HearAdvisor
Linner Mercury
3.0HearAdvisor SoundScoreGrade B
As it sounds out of the box
Bottom Line

The Linner Mercury is a budget-friendly OTC option with excellent feedback handling, best suited for buyers prioritizing low cost over audio performance.

Top 91% of OTC Hearing Aid
Strengths
  • Excellent feedback handling
  • Strong value at $387 price point
  • Rechargeable batteries included
Drawbacks
  • No music streaming capability
  • Below-average speech in noise performance
  • Own voice quality is low0.91 vs category
Metric Breakdown

SoundScore: 5 Acoustic Dimensions

The card below displays scores for speech in quiet, speech in noise, own voice, feedback management, and streaming quality. The purple SoundScore graph is the overall result, and the five graphs after it break it into individual measurements for the selected fit. Each curve shows how scores are spread across all tested hearing aids, and the dot and number mark the score for Linner Mercury.

SoundScore
0
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  • 0 products scored from 2.25 to 2.50
  • 7 products scored from 2.50 to 2.75
  • 5 products scored from 2.75 to 3.00
  • 8 products scored from 3.00 to 3.25
  • 18 products scored from 3.25 to 3.50
  • 13 products scored from 3.50 to 3.75
  • 13 products scored from 3.75 to 4.00
  • 16 products scored from 4.00 to 4.25
  • 14 products scored from 4.25 to 4.50
  • 14 products scored from 4.50 to 4.75
  • 3 products scored from 4.75 to 5.00
  • 2 products scored from 5.00 to 5.25
  • 0 products scored from 5.25 to 5.50
  • 0 products scored from 5.50 to 5.75
  • 0 products scored from 5.75 to 6.00
  • 1 product scored from 6.00 to 6.05
6.0
Choose your fit

Every hearing aid is lab-tested in two states — as it sounds out of the box, and after professional tuning. Switch fits to update the five metric graphs below.

As it sounds out of the box
Speech in quiet
New
0
  • 0 products scored from 0.00 to 0.25
  • 0 products scored from 0.25 to 0.50
  • 0 products scored from 0.50 to 0.75
  • 0 products scored from 0.75 to 1.00
  • 14 products scored from 1.00 to 1.25
  • 1 product scored from 1.25 to 1.50
  • 3 products scored from 1.50 to 1.75
  • 4 products scored from 1.75 to 2.00
  • 6 products scored from 2.00 to 2.25
  • 9 products scored from 2.25 to 2.50
  • 11 products scored from 2.50 to 2.75
  • 5 products scored from 2.75 to 3.00
  • 5 products scored from 3.00 to 3.25
  • 9 products scored from 3.25 to 3.50
  • 14 products scored from 3.50 to 3.75
  • 12 products scored from 3.75 to 4.00
  • 10 products scored from 4.00 to 4.25
  • 4 products scored from 4.25 to 4.50
  • 5 products scored from 4.50 to 4.75
  • 1 product scored from 4.75 to 5.00
  • 0 products scored from 5.00 to 5.25
  • 1 product scored from 5.25 to 5.40
5.4

How clearly speech comes through in calm, one-on-one surroundings.

Speech in noise
New
0
  • 0 products scored from 0.00 to 0.25
  • 0 products scored from 0.25 to 0.50
  • 0 products scored from 0.50 to 0.75
  • 0 products scored from 0.75 to 1.00
  • 43 products scored from 1.00 to 1.25
  • 17 products scored from 1.25 to 1.50
  • 11 products scored from 1.50 to 1.75
  • 10 products scored from 1.75 to 2.00
  • 6 products scored from 2.00 to 2.25
  • 7 products scored from 2.25 to 2.50
  • 7 products scored from 2.50 to 2.75
  • 4 products scored from 2.75 to 3.00
  • 5 products scored from 3.00 to 3.25
  • 0 products scored from 3.25 to 3.50
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  • 0 products scored from 5.00 to 5.25
  • 0 products scored from 5.25 to 5.50
  • 0 products scored from 5.50 to 5.75
  • 0 products scored from 5.75 to 6.00
  • 0 products scored from 6.00 to 6.25
  • 1 product scored from 6.25 to 6.40
6.4

Speech understanding against loud background noise — the toughest everyday test.

Own voice
0
  • 0 products scored from 0.00 to 0.25
  • 1 product scored from 0.25 to 0.50
  • 4 products scored from 0.50 to 0.75
  • 2 products scored from 0.75 to 1.00
  • 3 products scored from 1.00 to 1.25
  • 2 products scored from 1.25 to 1.50
  • 10 products scored from 1.50 to 1.75
  • 10 products scored from 1.75 to 2.00
  • 13 products scored from 2.00 to 2.25
  • 7 products scored from 2.25 to 2.50
  • 12 products scored from 2.50 to 2.75
  • 12 products scored from 2.75 to 3.00
  • 11 products scored from 3.00 to 3.25
  • 4 products scored from 3.25 to 3.50
  • 8 products scored from 3.50 to 3.75
  • 1 product scored from 3.75 to 4.00
  • 3 products scored from 4.00 to 4.25
  • 2 products scored from 4.25 to 4.50
  • 7 products scored from 4.50 to 4.75
  • 1 product scored from 4.75 to 4.80
4.8

How natural your own voice sounds while wearing the aids, without a boomy, plugged-up quality.

Music streaming
0
  • 0 products scored from 0.00 to 0.25
  • 0 products scored from 0.25 to 0.50
  • 0 products scored from 0.50 to 0.75
  • 0 products scored from 0.75 to 1.00
  • 0 products scored from 1.00 to 1.25
  • 0 products scored from 1.25 to 1.50
  • 1 product scored from 1.50 to 1.75
  • 2 products scored from 1.75 to 2.00
  • 4 products scored from 2.00 to 2.25
  • 5 products scored from 2.25 to 2.50
  • 6 products scored from 2.50 to 2.75
  • 2 products scored from 2.75 to 3.00
  • 6 products scored from 3.00 to 3.25
  • 7 products scored from 3.25 to 3.50
  • 6 products scored from 3.50 to 3.75
  • 6 products scored from 3.75 to 4.00
  • 16 products scored from 4.00 to 4.25
  • 7 products scored from 4.25 to 4.50
  • 3 products scored from 4.50 to 4.75
  • 1 product scored from 4.75 to 5.00
5.0

Sound quality of music streamed to the hearing aids over Bluetooth.

Feedback handling
0
  • 0 products scored from 0.00 to 0.25
  • 0 products scored from 0.25 to 0.50
  • 0 products scored from 0.50 to 0.75
  • 0 products scored from 0.75 to 1.00
  • 0 products scored from 1.00 to 1.25
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  • 0 products scored from 1.50 to 1.75
  • 1 product scored from 1.75 to 2.00
  • 1 product scored from 2.00 to 2.25
  • 0 products scored from 2.25 to 2.50
  • 3 products scored from 2.50 to 2.75
  • 0 products scored from 2.75 to 3.00
  • 0 products scored from 3.00 to 3.25
  • 2 products scored from 3.25 to 3.50
  • 1 product scored from 3.50 to 3.75
  • 6 products scored from 3.75 to 4.00
  • 13 products scored from 4.00 to 4.25
  • 6 products scored from 4.25 to 4.50
  • 17 products scored from 4.50 to 4.75
  • 64 products scored from 4.75 to 5.00
5.0

Resistance to the whistling and squealing caused by acoustic feedback.

Lab Assessment

Linner Mercury Verdict and Overall Standing

The Linner Mercury is a budget OTC hearing aid priced at $387, earning a B grade with a SoundScore of 3.0/5 in our lab testing. This visible-in-ear style device ranks #60 of 65 in the OTC Hearing Aid category, positioning it in the lower tier of available options.

In our standardized testing, the Mercury demonstrates excellent feedback handling at 4.7/5, scoring 0.16 points above the category average. This means users are unlikely to experience whistling or squealing during typical wear. However, the device shows limitations in other key areas. Speech in quiet scores 2.2/5, falling 0.62 points below the category average, while speech in noise performance is low at 1.0/5, sitting 0.48 points below average. Own-voice comfort is also low at 1.6/5, measuring 0.91 points below the category average.

The most significant limitation is music streaming, which scores 0.0/5—a full 1.92 points below the category average. Users who plan to stream phone calls or music through their hearing aids should consider alternatives. At this price point, competitors like the Elehear Beyond and Apple AirPods Pro 2 offer substantially higher overall scores.

The Linner Mercury may suit budget-conscious first-time users who prioritize stable, feedback-free wear over streaming capabilities or challenging listening environments. However, those seeking better speech clarity or music quality should explore other options in this price range.

Linner Mercury Hero
Linner Mercury
VerdictListening TestGraphAudioLab NotesSpecsMore
Reliable & Repeatable Lab Results

Quality data starts with quality recordings. HearAdvisor worked with GRAS to build a no-compromise front end so every test is repeatable and reliable.

Learn more
Steve in HearAdvisor Lab

Blind Comparison

Hear the Linner Mercury Against Other Tested Devices

The listening challenge below presents manikin-recorded audio samples captured under identical acoustic conditions with product identities hidden. After you complete the comparison, we reveal which device produced each sample and store your anonymized responses for ongoing research.

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Amplification Analysis

Linner Mercury Insertion Gain Measurements

The graph below plots measured insertion gain against prescriptive targets across the frequency range. This visualization shows how closely the Linner Mercury amplification aligns with evidence-based fitting guidelines during our standardized test protocol.

Graph

Captured Audio

Linner Mercury Manikin Recording Samples

These recordings were captured through an acoustic manikin fitted with the Linner Mercury under controlled conditions. A reference recording without amplification is included so you can evaluate the processed output directly.

Linner Mercury Audio Samples

How this hearing aid sounds in our lab scenes. Compare it out of the box and after professional tuning.

Before you listen

  1. Use good-quality headphones.
  2. Take out your hearing aids while you compare.
  3. Play the to set a comfortable level, then leave it.
  4. Switch recordings while it plays. You won't lose your place.
Scene type

Scene type: Conversation

Scene: Cafe 1

As tested out of the box
0:00
–:––

154 lab recordings of this product. They demonstrate relative processing in our lab and cannot predict an individual fitting outcome.

Test Documentation

Linner Mercury Fit Observations and Configuration

The notes below document observations from both Initial and Tuned fit conditions along with the test configuration used during measurement. This information provides context for interpreting the Linner Mercury performance data presented throughout this review.

Lab Notes

Initial fit observations

In initial fit testing with a power dome coupling, the Linner Mercury achieves a normalized Initial Score of 3.0/5. Speech in quiet measures 2.4/5, while speech in noise is low at 1.0/5. Feedback handling performs well at 4.4/5, indicating stable out-of-box performance without whistling. Own-voice comfort scores 1.6/5, and music streaming scores 0.0/5. The initial setup provides functional amplification but with notable limitations in speech clarity and streaming capabilities compared to category averages.

Tuned fit observations

With professional tuning using the same power dome coupling, the Mercury achieves a normalized Tuned Score of 3.0/5—unchanged from initial fit. Speech in quiet measures 2.2/5, and speech in noise remains at 1.0/5. Feedback handling improves to an excellent 4.7/5 after tuning. Own-voice comfort holds at 1.6/5, and music streaming remains at 0.0/5. The tuned configuration shows no meaningful improvement over initial fit, suggesting the device has limited adjustment headroom.

Test configuration

Initial Fitting
Tuned Fitting
Ear Coupling
Power Dome
Power Dome
Specs
Behind Ear
Behind Ear
Rechargeable Batteries
Rechargeable Batteries

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