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Sontro Soundwave Expert Review

Mid-Priced OTCReleased 2022

HearAdvisor's independent lab tested the Sontro Soundwave behind-the-ear OTC hearing aid across five performance metrics. This review presents our measured findings for both Initial and Tuned fit conditions.

Dr. Steve TaddeiDr. Steve Taddei, Au.D.Lab Director & Reviewer
Dr. Abram BaileyDr. Abram Bailey, Au.D.Fact Checker / Editor
How We Test

The Sontro Soundwave is a mid-priced behind-the-ear OTC hearing aid released in 2022, earning a C grade with a SoundScore of 2.9/5 in HearAdvisor's lab testing. At $849, it falls in the mid-range of OTC pricing but ranks #37 of 63 devices in its category.

In our testing, the Soundwave shows a mixed performance profile. Its strongest attribute is own-voice comfort, scoring 3.6/5—a solid result that sits 1.11 points above the OTC category average of 2.49/5. Speech clarity in quiet environments also performs respectably at 3.1/5, which is 0.46 points above average. However, speech in noise scores just 1.2/5, which is above the category average of 1.13/5 but remains low in absolute terms for challenging listening situations.

Significant limitations emerge in streaming and feedback handling. Music streaming scores 0.0/5, falling 1.93 points below the category average—users who prioritize phone audio streaming should look elsewhere. Feedback handling at 2.5/5 is 2.03 points below the OTC average of 4.53/5, indicating potential stability concerns during movement or when objects approach the ear.

The Soundwave uses disposable batteries rather than rechargeables. Buyers in this price range may want to consider alternatives: several competitors offer notably higher scores, while products like the Lexie Lumen deliver comparable performance at a lower price point. The Soundwave may suit users who prioritize own-voice comfort and quiet conversation over streaming features or demanding acoustic environments.

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.

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Steve in HearAdvisor Lab

Lab Assessment

Our Verdict on the Sontro Soundwave

The verdict below summarizes how the Sontro Soundwave performed across our standardized hearing aid tests. We evaluate where this mid-priced OTC device showed strengths and where measurements revealed limitations.

HearAdvisor Verdict
CTop 100% of OTC Hearing Aid
Bottom Line

The Sontro Soundwave offers above-average own voice quality and solid speech clarity in quiet, best for budget-conscious users prioritizing conversation over streaming.

Strengths
  • Strong own voice naturalness3.6/5, +1.11 vs category
  • Solid speech in quiet environments3.1/5
  • Above-average value for mid-priced OTC tier
Drawbacks
  • No music streaming capability0.0/5
  • Below-average feedback handling2.5/5, -2.03 vs category
  • Low speech-in-noise performance1.2/5

Fit Conditions

Sontro Soundwave Test Configurations

We measured the Sontro Soundwave in both Initial and Tuned fit conditions. Select either configuration below to view how amplification and performance metrics changed between the out-of-box state and after adjustment.

Lab Test Summary

In initial fit testing with an open dome, the Sontro Soundwave achieved a normalized score of 2.8/5. Own-voice comfort was excellent at 4.6/5, and feedback handling was strong at 4.7/5. However, speech benefit was limited, with speech in quiet at just 1.1/5 and speech in noise at 0.4/5. Music streaming scored 0.0/5. This configuration prioritizes comfort and stability 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.

Performance Metrics

Sontro Soundwave Score Breakdown

Our lab measures five distinct aspects of hearing aid performance using standardized test protocols. The card below displays how the Sontro Soundwave scored on speech clarity, noise handling, own-voice comfort, streaming quality, and feedback control.

Lab Review Scores
C
SoundGrade
Initial Score
2.8
Tuned Score
3.3
Speech in quiet
best
1.1
5.0
Own voice
best
4.6
5.0
Speech in noise
best
0.4
5.0
Feedback handling
best
4.7
5.0
Music streaming
best
0.0
5.0

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Amplification Analysis

Sontro Soundwave Insertion Gain Measurements

The graph below shows real-ear insertion gain measured on our test manikin at different frequencies. Comparing the measured output against prescriptive targets reveals how closely the Soundwave matches recommended amplification levels.

Graph

Audio Samples

Hear the Sontro Soundwave Output

These recordings capture what our test manikin detected while wearing the Sontro Soundwave during controlled speech presentations. Compare the aided samples against our unaided reference to assess the processing applied by this device.

Lab Recordings
Adjust volume to make "No hearing aids" as loud as it would be in the real world, without hearing aids. Remove hearing aids while auditioning. High-quality headphones will improve results!
Sontro Soundwave Lab

Test Documentation

Sontro Soundwave Lab Configuration Details

The documentation below records the specific settings, equipment, and conditions used during our Sontro Soundwave evaluation. This information supports transparency and allows comparison with other tested devices.

Lab Notes
Initial Fitting
Tuned Fitting
Ear Coupling
Open Dome
Tulip Dome
Specs
Behind Ear
Behind Ear
Disposable Batteries
Disposable Batteries
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