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Product Comparison

Olive Union Air vs Signia Pure C&G IX

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
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.

Expert Choice
Expert
Choice
Signia Pure C&G IX  Hero
SigniaSoundScore 4.1Grade A

Signia Pure C&G IX

The Signia Pure C&G IX is a premium behind-the-ear prescription hearing aid released in 2023, currently available at $3,298. In HearAdvisor's lab testing, it earned an A grade with a SoundScore of 4.1/5, ranking #22 among 39 prescription hearing aids tested. This device demonstrates notable strengths in speech clarity and feedback control. Speech in quiet scored 4.0/5, which is 0.57 points above the category average—a meaningful advantage for everyday conversations. Feedback handling achieved a perfect 5.0/5, sitting 0.28 points above the already-high category average of 4.72/5. Own-voice comfort also performed well at 3.2/5, exceeding the category average by 0.50 points. Speech in noise presents a more mixed picture. While the 2.2/5 score is technically above the category average by 0.10 points, it remains modest in absolute terms—something to consider if challenging listening environments are a priority. Music streaming scored a solid 3.0/5, sitting 0.24 points above average. The Pure C&G IX features rechargeable batteries and supports streaming to both iPhone and Android devices, including hands-free calling. At this premium price point, competitors like the Phonak Sphere Infinio (4.98/5) and Oticon Intent (4.83/5) achieve higher overall scores. This device may suit those who prioritize clear speech in quieter settings and excellent feedback stability, though buyers seeking stronger noise performance may want to compare alternatives.

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Performance metrics

Scale 1-5 (Tuned)

Lab metric by fit

Scale 1-5 (Tuned)

Speech in quietNew
Olive Union Air3.3
Signia Pure C&G IX4.0
Speech in noiseNew
Olive Union Air1.0
Signia Pure C&G IX2.2
Own voice
Olive Union Air2.2
Signia Pure C&G IX3.2
Feedback handling
Olive Union Air5.0
Signia Pure C&G IX5.0
Music streaming
Olive Union Air3.6
Signia Pure C&G IX3.0
Overall fit score
Olive Union Air3.9
Signia Pure C&G IX4.5

Speech level

Adjust input dB (Tuned)

Amplification (REIG)

Insertion gain at 65 dB (Tuned)

Fitting configuration for tuned fit

Olive Union AirSignia Pure C&G IX
Ear CouplingFoam tip
Ear CouplingSleeve Vented
ReceiverIntegrated in device
Receiver–
Fitting FormulaProprietary manufacturer default
Fitting Formula–
Listening ProgramRestaurant
Listening Program–
Volume Setting90% (9/10)
Volume Setting–
Software Versionvm4053d1203
Software Version–
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.
Tuning Adjustments–