Eargo 8 Expert Review
Our independent lab evaluated the Eargo 8 invisible-in-ear OTC hearing aid through standardized acoustic measurements. This review presents objective performance data from controlled testing across multiple listening scenarios.
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.
Bottom Line
Our Lab Verdict on the Eargo 8
The verdict card below summarizes how the Eargo 8 performed across our standardized test battery. You will find the overall grade, category ranking, and key performance highlights from our acoustic measurements.
The Eargo 8 is a discreet invisible-in-ear OTC aid with solid own-voice quality, best for users prioritizing cosmetics over streaming features.
Top 71% of OTC Hearing Aid- Strong feedback handling4.2/5
- Above-average own voice naturalness+0.69 vs category
- Solid speech clarity in quiet settings3.1/5
- No music streaming capability0.0/5
- Below-average speech in noise1.2/5
- Premium price for mid-tier sound performance
Eargo 8 Score Breakdown
Our lab measures five distinct performance areas using standardized acoustic protocols. The score card below displays how the Eargo 8 performed on each individual metric during controlled testing.
How clearly speech comes through in calm, one-on-one surroundings.
Speech understanding against loud background noise — the toughest everyday test.
How natural your own voice sounds while wearing the aids, without a boomy, plugged-up quality.
Sound quality of music streamed to the hearing aids over Bluetooth.
Resistance to the whistling and squealing caused by acoustic feedback.
Scores use HearAdvisor’s public scoring scale and are based on measurements from our acoustic test chamber.
Fit Conditions
Eargo 8 Lab Test Summary
We tested the Eargo 8 in both Initial and Tuned fit conditions to measure performance differences. The summaries below present findings from each configuration tested in our lab.
In our initial fit testing with a Power Dome with Slits coupling, the Eargo 8 achieved a normalized Initial Score of 3.3/5. Out of the box, the device showed modest speech-in-quiet performance at 2.2/5 and limited speech-in-noise capability at 1.0/5. Feedback handling was excellent at 5.0/5, providing stable amplification without whistling. Own-voice comfort measured 3.2/5, above the category average. Music streaming was non-functional at 0.0/5. This initial configuration prioritizes stability and comfort over maximum speech audibility.
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.
Amplification Data
Eargo 8 Insertion Gain Measurements
Insertion gain curves show how much amplification the Eargo 8 provides across frequencies. The graph below compares measured output against prescriptive targets for the hearing loss profile tested.
Audio Samples
Eargo 8 Manikin Recordings
We captured audio through the Eargo 8 using an acoustic manikin in controlled conditions. Compare these recordings below against our unaided reference to hear the processing characteristics.
Test Details
Eargo 8 Lab Configuration Notes
Our technicians documented all test parameters and device settings during evaluation. The notes below detail the specific configuration used when measuring this invisible-in-ear hearing aid.
Initial Fitting | Tuned Fitting | |
|---|---|---|
| Ear Coupling | Power Dome with Slits | Power Dome with Slits |
| Receiver | Integrated in device | Integrated in device |
| Fitting Formula | Proprietary manufacturer default | Proprietary manufacturer default |
| Listening Program | Restaurant | Restaurant |
| Volume Setting | Manufacturer defaults | 100% (Max volume) |
| Software Version | Software v5.7.0 | Software v5.7.0 |
| Tuning Adjustments | On-ear assessment performed, Noise Reduction set to High, Other settings at manufacturer defaults | On-ear assessment performed, Noise Reduction set to High, Treble at 2 above minimum, Bass at maximum, Other settings at manufacturer defaults |
