Lucid Engage vs Phonak Sphere Infinio Ultra
Side-by-side HearAdvisor lab results with SoundGrades, expert pick badges, and the same visualizations we use in product reviews.
Choice

Lucid Engage
The Lucid Engage is a mid-priced OTC hearing aid that earned an A grade with a SoundScore of 4.2/5 in our lab testing, ranking #14 among 65 OTC devices tested. Priced at $850, this behind-the-ear rechargeable device has received our Expert's Choice Award in both 2023 and 2024. In our testing, the Engage demonstrated strong speech clarity in quiet environments, scoring 4.3/5—a full 1.46 points above the OTC category average. Speech understanding in noisy settings scored 2.4/5, which is above the category average by 0.94 points but remains mixed in absolute terms. Own-voice comfort was solid at 3.6/5, exceeding the category average by over a point, which should help with natural-sounding self-perception during conversations. The device's main weakness is feedback handling, scoring 2.6/5—nearly 2 points below the category average of 4.54/5. Users may experience more whistling or feedback artifacts compared to other OTC options. Music streaming quality was mixed at 2.4/5, slightly above average but not a standout feature. The Lucid Engage is well-suited for consumers prioritizing speech clarity in everyday quiet-to-moderate listening situations who can accept trade-offs in feedback stability. Buyers in this price range may also consider alternatives like the Sony CRE-E10 or Lexie B2 Plus, which scored higher in our testing. The Engage supports both iPhone and Android streaming and offers rechargeable convenience.
Choice

Phonak Sphere Infinio Ultra
The Phonak Sphere Infinio Ultra is a premium behind-the-ear prescription hearing aid priced at $4,898. In HearAdvisor's lab testing, it earned an A grade with a SoundScore of 4.9/5, placing it in the top 3% of the 36 prescription hearing aids tested and ranking #2 in its category. This device delivers exceptional speech performance in our testing. Speech in noise scored an excellent 4.5/5, a remarkable 2.55 points above the category average of 1.96/5—one of the largest margins we've measured in this critical metric. Speech in quiet also performed strongly at 4.3/5, exceeding the category average by 1.00 point. These results suggest the Sphere Infinio Ultra prioritizes speech clarity across challenging listening environments. Music streaming quality is solid at 3.3/5, sitting 0.66 points above the category average. Own voice comfort scored 2.8/5, which is above the category average but remains mixed in absolute terms—listeners sensitive to occlusion may notice this limitation. Feedback handling measured 4.2/5, which is strong in absolute terms though 0.51 points below the category average of 4.71/5. The Sphere Infinio Ultra is best suited for users who prioritize speech understanding, particularly in noisy environments, and who are prepared to invest in premium technology. Those seeking the highest feedback stability or improved own-voice comfort may want to compare alternatives, though this device's speech performance stands out as a category leader.
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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