Cearvol Diamond X1 vs JLab Hear OTC
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 that earned a B grade with a SoundScore of 3.7/5 in our lab testing, placing it in the top 45% of OTC devices. At $199, it represents an accessible entry point for those exploring hearing amplification. The Diamond X1's standout performance is in music streaming, scoring 4.1/5—a strong result that sits 2.18 points above the OTC category average. This makes it notably capable for users who prioritize audio entertainment through their hearing devices. Feedback handling is also excellent at 4.5/5, meaning users should experience minimal whistling during normal use. However, speech performance presents limitations. Speech in quiet scores a mixed 2.8/5, and speech in noise registers at 1.7/5. While both metrics technically sit above category averages (+0.03 and +0.22 points respectively), they remain low in absolute terms—important context for anyone prioritizing conversation clarity. Own-voice comfort is another weakness, scoring 1.7/5, which is 0.81 points below the category average and may affect how natural users sound to themselves. The Diamond X1 is best suited for budget-conscious consumers who value music streaming quality and aren't heavily reliant on challenging listening environments. Those who prioritize speech understanding in noise or natural own-voice perception may want to consider alternatives in this price range, such as the higher-scoring Elehear Beyond or Apple AirPods Pro 2.

JLab Hear OTC
The JLab Hear OTC is a budget-priced OTC hearing aid released in 2024, earning a B grade with a SoundScore of 3.5/5 in our lab testing. At $100, it represents one of the most affordable entry points into the OTC hearing aid market, ranking #36 of 65 devices in its category. This visible-in-ear device delivers a distinctive performance profile with clear strengths and weaknesses. Its standout feature is excellent music streaming quality, scoring 4.6/5—a remarkable 2.68 points above the category average. Feedback handling is equally impressive at 5.0/5, meaning users can expect stable performance without whistling during daily activities. These results suggest JLab leveraged its audio expertise from consumer earbuds in developing this product. However, speech clarity presents challenges. Speech in quiet scored 2.1/5 (0.67 points below category average), while speech in noise scored 1.0/5 (0.46 points below average). Own-voice comfort also measured low at 1.8/5. These limitations are significant for users prioritizing conversation clarity, which is typically the primary reason people seek hearing aids. The JLab Hear OTC is best suited for budget-conscious consumers who value music and media streaming alongside basic amplification, rather than those needing maximum speech intelligibility. Features include rechargeable batteries, iPhone and Android streaming, and hands-free functionality. Buyers seeking stronger speech performance in this price range may want to compare options like the higher-scoring Elehear Beyond or Apple AirPods Pro 2.
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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
Recorded samples (Tuned)
Fitting configuration for tuned fit