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

Linner Nova Deluxe
The Linner Nova Deluxe is a budget-priced OTC hearing aid available for $299, earning a B grade with a SoundScore of 3.3/5 in HearAdvisor's lab testing. This visible-in-ear style device ranks #53 of 65 OTC hearing aids tested, placing it in the lower tier of its category. In our testing, the Nova Deluxe showed a notable strength in feedback handling, scoring an excellent 5.0/5—0.46 points above the category average. This suggests stable performance without whistling during typical wear. Speech clarity in quiet environments scored a mixed 2.8/5, right at the category average, providing basic conversational support. However, speech understanding in noisy situations scored a low 1.4/5, slightly below average. The device has significant limitations in two areas. Own-voice comfort scored just 0.5/5, which is 2.01 points below the category average, indicating noticeable occlusion effects when speaking. Music streaming scored 0.0/5 in our lab measurements, 1.92 points below average, making this device poorly suited for audio entertainment despite offering iPhone, Android, and hands-free streaming connectivity. At its $299 price point, the Nova Deluxe competes against higher-performing alternatives in the same budget range. This device may suit buyers prioritizing stability and basic speech clarity in quieter settings, but those who stream music or are sensitive to how their own voice sounds should consider other options in this price tier.

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)
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