Hero Image
Expert
Choice

Oticon Zeal Expert Review

Premium RxReleased 2026
How We Test

The Oticon Zeal is a premium prescription invisible-in-ear hearing aid priced at $4,798, achieving a SoundScore of 4.26 out of 5 in HearAdvisor's lab testing. As an invisible-in-canal (IIC) style device, it offers maximum discretion while delivering strong speech understanding performance.

In our testing, the Zeal demonstrated excellent speech clarity, scoring 1.09 points above the prescription hearing aid category average for speech in quiet and an impressive 1.38 points above average for speech in noise. Music streaming quality also measured above average at +0.73 points. These results suggest the Zeal excels at its primary function of improving speech intelligibility across listening environments.

However, the device showed some limitations typical of deeply-fitted invisible styles. Feedback handling measured 1.47 points below the category average, and own-voice comfort scored 0.76 points below average—both likely related to the challenges of fitting powerful amplification in a small, deeply-seated form factor. Users sensitive to occlusion effects or those in feedback-prone situations may want to discuss these tradeoffs with their hearing care provider.

The Oticon Zeal is best suited for individuals who prioritize cosmetic discretion and strong speech performance, and who are willing to work with a professional to optimize the fit. Those seeking maximum feedback stability or own-voice comfort may find behind-the-ear styles more accommodating.

Lab Test Summary

In the initial fit configuration using a closed vented dome with the 75 receiver and NAL-NL2 formula, the Oticon Zeal achieved a Fit Score of 3.07 out of 5. Speech in quiet measured 3.90 and speech in noise scored 2.00, indicating reasonable baseline speech performance. Music streaming showed strong results at 4.10. However, own-voice comfort was limited at 2.00, reflecting the occlusion effects common with closed dome fittings in invisible styles. Feedback handling measured 3.80, suggesting adequate but not exceptional stability out of the box.

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.

Lab Review Scores
A
SoundGrade
Initial Score
4.2
Tuned Score
4.5
Expert
Choice
Speech in quiet
best
3.9
5.0
Own voice
best
2.0
5.0
Speech in noise
best
2.0
5.0
Feedback handling
best
3.8
5.0
Music streaming
best
4.1
5.0

Loading listening test...

State-of-the-art Acoustic Laboratory

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
Graph
Lab Recordings
Lab Notes
Initial Fitting
Tuned Fitting
Ear Coupling
Initial Fitting
Closed Vented Dome
Tuned Fitting
Closed Vented Dome
Receiver
Initial Fitting
75
Tuned Fitting
75
Fitting Formula
Initial Fitting
NAL-NL2
Tuned Fitting
NAL-NL2
Listening Program
Initial Fitting
General (Automatic)
Tuned Fitting
General (Automatic)
Volume Setting
Initial Fitting
Manufacturer defaults
Tuned Fitting
Adjusted to match NAL-NL2 targets at 55, 65, and 75 dB SPL
Software Version
Initial Fitting
Firmware v1.0.0
Tuned Fitting
Firmware v1.0.0
Tuning Adjustments
Initial Fitting
Programmed to N3 audiogram, Feedback calibrated, Acclimatization at 3/3, Other settings at manufacturer defaults
Tuned Fitting
Programmed to N3 audiogram, Feedback calibrated, Acclimatization at 3/3, Other settings at manufacturer defaults
Notes
Initial Fitting
n/a
Tuned Fitting
n/a