HearingAssist Micro Expert Review
Our independent lab tested the HearingAssist Micro using standardized measurements on an acoustic manikin. This review presents objective performance data for this invisible-in-ear amplifier across speech clarity, noise handling, and comfort metrics.
Dr. Steve Taddei, Au.D. — Lab Director & Reviewer
Dr. Abram Bailey, Au.D. — Fact Checker / Editor
Quality data starts with quality recordings. HearAdvisor worked with GRAS to build a no-compromise front end so every test is repeatable and reliable.
Our Assessment
HearingAssist Micro Lab Verdict
Our testing team evaluated the HearingAssist Micro across five performance dimensions using controlled acoustic measurements. The verdict below summarizes how this invisible-in-ear amplifier performed in our lab environment.
The HearingAssist Micro is a discreet amplifier with solid speech clarity in quiet settings, best suited for those prioritizing invisible design over streaming features.
- Strong speech clarity in quiet3.4/5, +1.34 vs category
- Reliable feedback handling4.0/5
- Virtually invisible in-ear design
- No music streaming capability0.0/5
- Limited performance in noisy environments1.1/5
- Uses disposable batteries
Fit Conditions
Initial and Tuned Performance for the HearingAssist Micro
We measured this amplifier in both its out-of-box Initial fit and after completing the manufacturer's Tuned adjustment process. The summaries below describe measured behavior under each configuration.
In its initial out-of-box configuration with an open dome, the HearingAssist Micro achieves a normalized Initial Score of 3.5/5. Speech in quiet performs well at 3.5/5, notably above the category average. Speech in noise scores 1.1/5—above average for amplifiers but still limited in absolute capability. Feedback handling is strong at 4.0/5, and own-voice comfort is reasonable at 2.9/5. Music streaming is not functional, scoring 0.0/5.
What is HearAdvisor's Initial Fit?
The Initial Fit approximates the most likely settings and eartips for a typical moderate hearing loss. Results are measured across the same 72 acoustic scenes in our custom-built lab, then scored on a 5-star scale using an auditory model.
Metric Breakdown
HearingAssist Micro Performance Scores
Our lab measures five distinct metrics for every amplification product we test. The score card below shows how the HearingAssist Micro performed on speech clarity, noise handling, feedback control, own-voice comfort, and music reproduction.
Amplification Data
HearingAssist Micro Insertion Gain Measurements
Real-ear insertion gain reveals how much amplification reaches the eardrum across the frequency range. The graph below plots the HearingAssist Micro's measured output against prescriptive fitting targets.
Audio Samples
Listen to the HearingAssist Micro on Our Test Manikin
We recorded audio through the HearingAssist Micro using a head-and-torso simulator in our sound booth. Compare these recordings to our unaided reference to hear the amplification characteristics firsthand.
Test Documentation
HearingAssist Micro Lab Configuration Notes
Our technicians document the settings, accessories, and procedures used during each product evaluation. The notes below detail how we configured the HearingAssist Micro for this round of testing.
Initial Fitting | Tuned Fitting | |
|---|---|---|
| Ear Coupling | Open Dome | Open Dome |
