Otofonix Elite vs Sontro Soundwave
Side-by-side HearAdvisor lab results with SoundGrades, expert pick badges, and the same visualizations we use in product reviews.

Otofonix Elite
The Otofonix Elite is a behind-the-ear amplification product priced at $249, earning a C grade with a SoundScore of 2.6/5 in HearAdvisor's lab testing. Released in 2016, this budget amplifier ranks #8 of 8 devices in the Amplification Product category. In our testing, the Elite demonstrates one clear strength: excellent feedback handling at 5.0/5, which is 0.72 points above the category average. This means users are unlikely to experience whistling or squealing during normal use. However, other performance metrics tell a different story. Speech clarity is a significant weakness. Speech in quiet scores just 1.0/5, which is 1.11 points below the category average, while speech in noise also scores 1.0/5, falling 0.37 points below average. Own-voice comfort is particularly low at 0.1/5 in the tuned configuration—2.54 points below the category average—meaning users may find their own voice sounds boomy or unnatural. Music streaming is not supported, scoring 0.0/5. At this price point, consumers should note that alternatives like the Audien Hearing Atom offer better sound performance at a lower price. The Otofonix Elite may appeal to those prioritizing feedback-free operation above all else, but its limited speech benefit and comfort challenges make it difficult to recommend for most users seeking improved hearing clarity.

Sontro Soundwave
The Sontro Soundwave is a mid-priced OTC hearing aid that earns a B grade with a SoundScore of 3.0/5 in our lab testing. At $849, this behind-the-ear device uses disposable batteries and sits in the lower tier of OTC performance, ranking #61 of 65 devices in its category. The Soundwave's strongest attribute is own-voice comfort, scoring 3.6/5—a solid result that sits 1.09 points above the OTC category average. This makes it relatively comfortable for wearers who are sensitive to hearing their own voice sound unnatural or boomy. However, other performance areas present significant limitations. Speech clarity scores are below average in both quiet and noisy environments. Speech in quiet scores 2.7/5 (0.12 points below average), while speech in noise drops to 1.2/5 (0.28 points below average). Feedback handling is a notable weakness at 2.5/5, falling 2.04 points below the category average of 4.54/5. Perhaps most limiting is the music streaming score of 0.0/5, indicating this device does not support phone audio streaming—a feature many competitors in this price range offer. Consumers prioritizing own-voice comfort on a moderate budget may find the Soundwave acceptable, but those seeking strong speech clarity or streaming capability should consider alternatives. Several higher-performing OTC devices are available at similar or lower price points, including options like the Lexie Lumen or HearingAssist Control that deliver comparable or better overall sound quality.
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