HearingAssist Micro Hero

HearingAssist Micro Expert Review

Premium AmplifierReleased 2022

Our lab tested the HearingAssist Micro using standardized acoustic measurements and electroacoustic analysis. This independent review presents objective performance data to help you evaluate this invisible-in-ear amplifier.

Dr. Steve TaddeiDr. Steve Taddei, Au.D. — Lab Director & Reviewer
Dr. Abram BaileyDr. Abram Bailey, Au.D. — Fact Checker / Editor
How We Test
HearingAssist Micro Hero
HearAdvisor
HearingAssist Micro
3.5HearAdvisor SoundScoreGrade B
As it sounds out of the box
Bottom Line

The HearingAssist Micro is a discreet invisible-in-ear amplifier with strong speech clarity in quiet settings, best for budget-conscious users prioritizing cosmetics.

Top 25% of Amplification Product
Strengths
  • Excellent speech in quiet+1.35 vs category
  • Strong feedback handling
  • Discreet invisible-in-ear design
Drawbacks
  • No music streaming capability
  • Low speech in noise performance
  • Disposable batteries only
Performance Metrics

SoundScore: 5 Acoustic Dimensions

Five lab measurements capture speech clarity in quiet, speech understanding in noise, feedback control, own-voice naturalness, and music reproduction 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 HearingAssist Micro.

SoundScore
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  • 14 products scored from 4.50 to 4.75
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  • 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
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5.4

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

Speech in noise
New
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6.4

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

Own voice
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  • 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
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  • 16 products scored from 4.00 to 4.25
  • 7 products scored from 4.25 to 4.50
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  • 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
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  • 13 products scored from 4.00 to 4.25
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  • 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

HearingAssist Micro Verdict

The HearingAssist Micro is a premium amplifier in the invisible-in-ear style, priced at $698. In HearAdvisor's lab testing, it earned a B grade with a SoundScore of 3.5/5, ranking #3 among 8 tested amplification products and placing in the top 25% of its category.

This device demonstrates a clear strength in speech clarity for quiet environments, scoring 3.5/5—a solid result that sits 1.35 points above the category average of 2.11/5. Feedback handling is also strong at 4.0/5, providing stable performance during typical use. Own-voice comfort lands at 2.8/5, which is above the category average by 0.16 points, though still mixed in absolute terms.

However, the Micro shows notable limitations in more challenging listening situations. Speech in noise scored just 1.1/5, falling 0.31 points below the category average—a meaningful weakness for users who frequently encounter background noise. Music streaming is where this device struggles most significantly, scoring 0.0/5, which is 1.16 points below the already-low category average.

The HearingAssist Micro is best suited for listeners who primarily need amplification for face-to-face conversations in quiet settings and prioritize a discreet, nearly invisible form factor. Those who rely on phone streaming for music or podcasts, or who need robust performance in noisy environments, should consider alternatives. Within its price range, the Sennheiser Conversation Clear Plus offers notably higher overall performance at a similar investment.

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

Hear It Yourself

Compare the HearingAssist Micro in a Blind Listening Test

Listen to recordings captured through the Micro alongside other amplification products under identical acoustic conditions. Products are revealed only after you complete the comparison, and anonymized responses contribute to ongoing research.

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Amplification Analysis

HearingAssist Micro Insertion Gain Measurements

The graph below plots measured insertion gain against prescriptive targets across the frequency range. This visualization shows how closely the Micro's amplification aligns with evidence-based fitting rationales.

Graph

Audio Samples

HearingAssist Micro Manikin Recordings

These recordings were captured through an acoustic manikin fitted with the HearingAssist Micro. Compare them against reference samples to hear how speech and environmental sounds are processed by this device.

HearingAssist Micro 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
–:––

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

Test Documentation

HearingAssist Micro Lab Notes and Configuration

Review our documented observations from fitting the Micro in both Initial and Tuned conditions. The notes below detail the test configuration and any relevant findings from our measurement sessions.

Lab Notes

Initial fit observations

In the initial fit configuration using an open dome, the HearingAssist Micro achieved a normalized score of 3.5/5. Speech in quiet performed well at 3.5/5, substantially above the category average. Feedback handling was strong at 4.0/5, while own-voice comfort measured 2.9/5. Speech in noise was limited at 1.0/5, and music streaming scored 0.0/5, indicating this out-of-box configuration prioritizes basic speech clarity over multimedia or challenging acoustic environments.

Tuned fit observations

The tuned fit retained the same open dome coupling, and performance remained essentially unchanged with a normalized score of 3.5/5. Speech in quiet held steady at 3.5/5, while speech in noise showed minimal improvement at 1.1/5. Own-voice comfort measured 2.8/5, and feedback handling remained strong at 4.0/5. Music streaming continued to score 0.0/5. The lack of meaningful improvement from tuning suggests this device offers limited adjustment flexibility beyond its initial configuration.

Test configuration

Initial Fitting
Tuned Fitting
Ear Coupling
Open Dome
Open Dome
Specs
Invisible in Ear
Invisible in Ear
Disposable Batteries
Disposable Batteries
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