Our independent lab tested the Olive Union Air using standardized measurements on an acoustic manikin. This review presents the objective performance data, audio samples, and detailed findings from our evaluation of this budget OTC hearing aid.
Dr. Steve Taddei, Au.D. — Lab Director & Reviewer
Dr. Abram Bailey, Au.D. — Fact Checker / Editor
The Olive Union Air is a budget-friendly OTC hearing aid with standout music streaming and feedback handling for everyday listeners.
Top 31% of OTC Hearing AidThe card below displays individual scores for speech-in-quiet, speech-in-noise, own-voice comfort, music quality, and feedback control. Each metric reflects standardized lab measurements on a five-point scale. The purple SoundScore graph is the overall result, and the five graphs after it break it into individual measurements for the selected fit. Each curve shows how scores are spread across all tested hearing aids, and the dot and number mark the score for Olive Union Air.
Every hearing aid is lab-tested in two states — as it sounds out of the box, and after professional tuning. Switch fits to update the five metric graphs below.
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.
Our Assessment
Quality data starts with quality recordings. HearAdvisor worked with GRAS to build a no-compromise front end so every test is repeatable and reliable.
Amplification Analysis
The graph below plots the measured insertion gain of the Olive Union Air against prescriptive targets. This visualization shows how closely the amplification matches evidence-based fitting recommendations across frequencies.
Audio Samples
These recordings capture audio processed through the Olive Union Air as measured by our acoustic manikin. Compare them against the reference sample to hear how the device affects speech and environmental sounds.
How this hearing aid sounds in our lab scenes. Compare it out of the box and after professional tuning.
Scene type: Conversation
146 lab recordings of this product. They demonstrate relative processing in our lab and cannot predict an individual fitting outcome.
Test Documentation
The lab notes below document the specific settings, test conditions, and configuration parameters used during our evaluation. This information provides transparency into our measurement methodology for this device.
Out of the box with foam tip coupling, the Olive Union Air achieves a normalized Initial Score of 4.0/5. Speech in quiet performs solidly at 3.5/5, while speech in noise is limited at 1.0/5. The device excels in feedback handling with a perfect 5.0/5 and delivers strong music streaming at 3.6/5. Own-voice comfort scores 2.2/5, reflecting mixed performance in this area. The initial fit provides a capable starting point for users in quieter listening environments.
With professional tuning using the same foam tip coupling, the Olive Union Air achieves a normalized Tuned Score of 3.9/5—a slight decrease of 0.1 points from initial fit. Speech in quiet measures 3.3/5, with speech in noise unchanged at 1.0/5. Feedback handling remains excellent at 5.0/5, and music streaming holds steady at 3.6/5. The minimal change between fits suggests the device's proprietary default fitting is already well-optimized for its intended performance profile.
Initial Fitting | Tuned Fitting | |
|---|---|---|
| Ear Coupling | Foam tip | Foam tip |
| Receiver | Integrated in device | Integrated in device |
| Fitting Formula | Proprietary manufacturer default | Proprietary manufacturer default |
| Listening Program | Restaurant | Restaurant |
| Volume Setting | 90% (9/10) | 90% (9/10) |
| Software Version | vm4053d1203 | vm4053d1203 |
| Tuning Adjustments | Hearing Settings at "Default", Directionality at "Front", Noise Setting at "3" (max), Feedback Cancellation at "On", Other settings at manufacturer defaults. | Multi-band equalizer was adjusted, Hearing Settings at "Default", Directionality at "Front", Noise Setting at "3" (max), Feedback Cancellation at "On", Other settings at manufacturer defaults. |
