Cearvol Diamond X1 vs Otofonix Encore
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.

Otofonix Encore
The Otofonix Encore is a behind-the-ear prescription hearing aid priced at $295, placing it in the budget tier of the prescription category. In our lab testing, it earned a C grade with a SoundScore of 2.7/5, ranking 35th out of 36 prescription hearing aids tested. Sound performance presents significant challenges across most metrics. Speech clarity scores are low in both quiet (1.0/5) and noisy environments (1.0/5), falling 2.32 and 0.96 points below category averages respectively. Music streaming capability is essentially absent at 0.0/5, and own-voice comfort is notably limited at 0.1/5 in the tuned configuration—2.65 points below the category average. The one bright spot is feedback handling, which scores an excellent 4.7/5. While this falls just 0.01 points below the category average, it represents strong absolute performance that should minimize whistling issues during daily use. This device runs on disposable batteries. At this price point, shoppers should be aware that the RxEars Rxi offers substantially better sound performance (4.09/5) in the same price range. The Otofonix Encore may suit budget-conscious consumers who prioritize feedback stability over speech clarity and streaming features, but our testing suggests most users would benefit from considering higher-performing alternatives within this price tier.
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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)
Audio scenes
Using MUSHRA scenes (Tuned)
Fitting configuration for tuned fit