Eargo 7 vs Sony CRE-C20
Side-by-side HearAdvisor lab results with SoundGrades, expert pick badges, and the same visualizations we use in product reviews.

Eargo 7
The Eargo 7 is a premium-priced OTC hearing aid at $2,550, featuring an invisible-in-ear design with rechargeable batteries. In HearAdvisor's lab testing, it earned a B grade with a SoundScore of 3.5/5, placing it in the top 57% of the OTC hearing aid category. Speech performance in quiet environments is a strength for the Eargo 7, scoring 3.1/5—0.33 points above the category average. Own-voice comfort also exceeds the category average by 0.39 points, though at 2.9/5 it remains mixed in absolute terms. However, speech understanding in noisy environments presents a limitation, scoring 1.0/5, which falls 0.44 points below the category average. A significant drawback is the complete absence of music streaming capability, scoring 0.0/5—nearly 2 points below the category average. Feedback handling is solid at 3.8/5 in absolute terms, though it falls 0.74 points below the category average for OTC devices. The Eargo 7 may appeal to users who prioritize a discreet, nearly invisible form factor and primarily need assistance in quieter listening situations. However, consumers seeking strong noise performance or music streaming should be aware of these limitations, particularly given the premium price point. Several alternatives at lower price points achieve higher overall scores in our testing.

Sony CRE-C20
The Sony CRE-C20 is an invisible-in-ear OTC hearing aid priced at $999, earning a B grade with a SoundScore of 3.6/5 in our lab testing. This mid-priced device offers a discreet form factor with rechargeable batteries, positioning it in the upper tier of the OTC market. In our testing, the CRE-C20 demonstrates notable strengths in speech clarity. Speech in quiet scores 4.1/5—a strong result that sits 1.33 points above the OTC category average. Speech in noise performance reaches 2.7/5, which is 1.24 points above the category average, though only mixed in absolute terms. Own voice comfort scores 2.9/5, slightly above average for the category at +0.39 points. The device shows significant limitations in other areas. Music streaming scored 0.0/5, falling 1.92 points below the category average—this invisible-in-ear design does not support audio streaming functionality. Feedback handling registers at 3.9/5, which is solid in absolute terms, though 0.64 points below the category average of 4.54/5. The CRE-C20 demonstrates meaningful improvement with proper adjustment. The normalized Initial Score of 3.4/5 improves to 4.2/5 when tuned, suggesting users who invest time in optimization will see better results. Within its price range, alternatives like the Sony CRE-E10 (4.69/5) and Lexie B2 Plus (4.43/5) score higher overall. The CRE-C20 is best suited for users prioritizing discretion and speech clarity who don't need music streaming capabilities.
Performance metrics
Scale 1-5 (Tuned)
Speech level
Adjust input dB (Tuned)
Amplification (REIG)
Insertion gain at 65 dB (Tuned)
Fitting configuration for tuned fit