
Eargo 8 Expert Review
Our independent lab tested the Eargo 8 invisible-in-ear hearing aid across five performance metrics. This review presents our measured results for both initial and professionally tuned fit conditions.

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

Lab Assessment
Our Verdict on the Eargo 8
Our testing team evaluated the Eargo 8 across standardized listening scenarios to measure real-world performance. The verdict below summarizes how this invisible-in-ear device performed in our lab and where it stands among OTC hearing aids.
The Eargo 8 is a premium invisible-in-ear OTC aid with natural own-voice quality, best for users prioritizing discreet design over advanced sound performance.
- Strong feedback handling4.2/5
- Above-average own-voice naturalness+0.71 vs category
- Virtually invisible in-ear design
- Low speech-in-noise performance0.3/5
- No music streaming capability0.0/5
- Premium price at $2,399
Fit Conditions
Eargo 8 Performance Across Initial and Tuned Settings
We tested the Eargo 8 in both its out-of-box initial configuration and after professional tuning adjustments. The summaries below show how each fit condition performed in our standardized measurements.
In initial fit testing with a Power Dome with Slits coupling, the Eargo 8 achieved a normalized score of 2.8/5. Speech-in-quiet measured 1.9/5, while speech-in-noise scored -0.2/5, indicating limited benefit in challenging acoustic environments out of the box. Feedback handling was excellent at 5.0/5, and own-voice comfort was solid at 3.2/5. Music streaming scored 0.0/5. The initial configuration prioritizes stability and comfort over 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.
Measured Metrics
Eargo 8 Score Breakdown by Category
Our lab measures five distinct performance areas for every hearing aid we test. The score card below displays how the Eargo 8 performed in speech-in-quiet, speech-in-noise, own-voice comfort, feedback control, and music streaming.
Amplification Data
Eargo 8 Insertion Gain Measurements
Insertion gain shows how much amplification a hearing aid provides across different frequencies. The graph below plots the Eargo 8's measured output against prescriptive targets for a standardized hearing loss.
Audio Samples
Hear the Eargo 8 Through Our Test Manikin
We capture audio samples using a head-and-torso simulator equipped with ear canal microphones. The recordings below let you compare what the Eargo 8 picks up against our unaided reference signal.

Test Documentation
Eargo 8 Lab Configuration and Settings
Every test follows our standardized protocol with documented device settings and conditions. The notes below detail the specific configuration used during our Eargo 8 evaluation.
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 |





