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Product Comparison

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.

Uses Official HearAdvisor Lab Data
HearingAssist Control Hero
HearingAssistSoundScore 3.3Grade B

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.

Product Image
OliveSoundScore 3.9Grade B

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 in quietNew
HearingAssist Control3.4
Olive Union Air3.3
Speech in noiseNew
HearingAssist Control2.0
Olive Union Air1.0
Own voice
HearingAssist Control2.1
Olive Union Air2.2
Feedback handling
HearingAssist Control5.0
Olive Union Air5.0
Music streaming
HearingAssist Control0.0
Olive Union Air3.6
Overall fit score
HearingAssist Control3.8
Olive Union Air3.9

Speech level

Adjust input dB (Tuned)

Amplification (REIG)

Insertion gain at 65 dB (Tuned)

Fitting configuration for tuned fit

HearingAssist ControlOlive Union Air
Ear CouplingPower Dome with Slits
Ear CouplingFoam tip
Receiver–
ReceiverIntegrated in device
Fitting Formula–
Fitting FormulaProprietary manufacturer default
Listening Program–
Listening ProgramRestaurant
Volume Setting–
Volume Setting90% (9/10)
Software Version–
Software Versionvm4053d1203
Tuning Adjustments–
Tuning AdjustmentsMulti-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.