HearingAssist Control vs Olive Union Air
Side-by-side HearAdvisor lab results with SoundGrades, expert pick badges, and the same visualizations we use in product reviews.

HearingAssist Control
The HearingAssist Control is a mid-priced OTC behind-the-ear hearing aid available at $549. In our lab testing, it earned a B grade with a SoundScore of 3.3/5, placing it in the top 77% of OTC hearing aids tested. This device demonstrates solid speech performance, scoring above the category average in both quiet and noisy environments. Speech in quiet earned a solid 3.4/5, while speech in noise scored 2.0/5—above average for the category but only mixed in absolute terms. Feedback handling is excellent at 5.0/5, meaning wearers should experience minimal whistling during normal use. The HearingAssist Control has notable limitations. Music streaming scored 0.0/5, indicating this device does not support audio streaming functionality—a significant gap compared to many competitors in this price range. Own-voice comfort scored 2.1/5, which is below the category average and may result in a hollow or boomy perception of your own voice. For shoppers considering this price tier, alternatives like the Yeasound RIC800 (4.73/5) and Sony CRE-E10 (4.66/5) offer substantially higher overall sound performance. The HearingAssist Control may suit buyers prioritizing speech clarity and feedback stability who don't need streaming capabilities, but most users would benefit from exploring higher-scoring options at similar price points.

Olive Union Air
The Olive Union Air is a budget-priced OTC hearing aid that earned a B grade with a SoundScore of 3.9/5 in our lab testing, placing it in the top 31% of OTC hearing aids at #21 of 65 devices tested. At $250, it represents a competitive entry point in the over-the-counter hearing aid market. In our testing, this visible-in-ear style device demonstrated notable strengths in music streaming, scoring 3.6/5—a solid result that sits 1.67 points above the OTC category average. Feedback handling was excellent at 5.0/5, meaning users should experience minimal whistling or squealing during normal use. Speech understanding in quiet environments also performed well at 3.3/5, measuring 0.46 points above the category average. The Olive Union Air does show limitations in more challenging listening situations. Speech in noise scored 1.0/5, falling 0.48 points below the category average—a common weakness among budget OTC devices that may affect conversations in restaurants or busy environments. Own-voice comfort measured 2.2/5, slightly below average, which some users may notice when speaking. This device is best suited for individuals who prioritize music and media streaming, need reliable feedback control, and primarily listen in quieter environments. Those who frequently encounter noisy social situations may want to consider devices with stronger speech-in-noise performance.
Performance metrics
Scale 1-5 (Tuned)
Lab metric by fit
Scale 1-5 (Tuned)
Speech level
Adjust input dB (Tuned)
Amplification (REIG)
Insertion gain at 65 dB (Tuned)
Fitting configuration for tuned fit