Cearvol Diamond X1 vs Phonak Audéo Lumity
Side-by-side HearAdvisor lab results with SoundGrades, expert pick badges, and the same visualizations we use in product reviews.

Cearvol Diamond X1
The Cearvol Diamond X1 is a budget-priced OTC hearing aid available for $199, earning a B grade with a SoundScore of 3.7/5 in our lab testing. This visible-in-ear style device ranks #30 among 65 OTC hearing aids tested, placing it in the top 45% of its category. The Diamond X1 delivers a mixed performance profile with one notable strength: music streaming. With a score of 4.1/5, it performs 2.18 points above the category average—a substantial margin that makes it appealing for users who value audio entertainment through their hearing aids. Feedback handling is excellent at 4.5/5, providing stable performance during typical daily movements. Both iPhone and Android streaming are supported with rechargeable batteries for convenience. Speech performance presents a more modest picture. Speech in quiet scores 2.8/5, which is above the category average but only mixed in absolute terms. Speech in noise measures 1.7/5—above the category average of 1.48/5, though still low overall. Own-voice comfort is a weakness at 1.7/5, falling 0.81 points below the category average, which may cause your own voice to sound unnatural or boomy. The Diamond X1 is best suited for budget-conscious consumers who prioritize music and media streaming over maximum speech clarity. Those seeking stronger speech performance in challenging listening environments may want to consider higher-scoring alternatives in this price range, such as the Elehear Beyond or Apple AirPods Pro 2.
Choice

Phonak Audéo Lumity
The Phonak Audéo Lumity is a premium prescription behind-the-ear hearing aid released in 2022, priced at $4,398. In HearAdvisor's lab testing, it earned a SoundScore of 4.1/5 (A grade), ranking #21 of 36 prescription hearing aids tested. This device demonstrates clear strengths in specific performance areas. Music streaming quality is strong at 4.1/5, scoring 1.46 points above the category average—a notable advantage for users who frequently stream audio from their phones. Feedback handling is excellent at 5.0/5, meaning the Lumity maintained stability without audible feedback during our standardized challenge tests. Speech in quiet environments also performs solidly at 3.7/5, measuring 0.37 points above the prescription category average. However, the Lumity shows a significant weakness in own-voice comfort, scoring just 1.0/5—a full 1.75 points below the category average. This low score suggests users may notice more occlusion or an unnatural quality to their own voice. Speech in noise performance is mixed at 2.1/5; while this is slightly above the category average (+0.19 points), it remains modest in absolute terms. The Audéo Lumity is best suited for users who prioritize excellent streaming quality and reliable feedback control, and who are less sensitive to own-voice occlusion effects. Those who struggle primarily with speech understanding in noisy environments may want to compare against higher-scoring competitors in this price range, such as the Phonak Sphere Infinio or Oticon Intent.
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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