Cearvol Diamond X1 vs Zepp Clarity Pixie
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.

Zepp Clarity Pixie
The Zepp Clarity Pixie is a mid-priced OTC hearing aid featuring an invisible-in-ear design, priced at $999. In our lab testing, it earned a B grade with a SoundScore of 3.6/5, placing it in the top 48% of OTC hearing aids tested. Speech clarity is a notable strength for the Pixie. It scores 3.6/5 for speech in quiet—a solid result that sits 0.77 points above the category average. Speech in noise performance is above the category average as well, though at 1.7/5 it remains low in absolute terms. Feedback handling is strong at 4.3/5, though slightly below the category average of 4.54/5. The Pixie shows significant limitations in other areas. Own-voice comfort scores just 1.5/5, falling 1.01 points below the category average—users may notice their own voice sounds unnatural or boomy. Music streaming is a particular weakness, scoring 0.0/5, which is 1.92 points below the category average. Those who frequently stream phone audio should consider alternatives. At this price point, competitors offer stronger overall performance. The Yeasound RIC800 and Sony CRE-E10 both score above 4.6/5 at similar prices. The Elehear Delight and Yeasound RIC700 deliver scores around 4.3/5 at lower price points. The Pixie may appeal to users who prioritize its discreet invisible-in-ear form factor and primarily need speech clarity in quieter environments, but those seeking well-rounded performance or music streaming should explore alternatives.
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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