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

EarCentric EasyCharge
The EarCentric EasyCharge is a budget-priced prescription hearing aid available for $229, earning a C grade with a SoundScore of 2.7/5 in our lab testing. This behind-the-ear rechargeable device ranks #36 of 39 prescription hearing aids tested, placing it in the bottom tier of its category. In our standardized testing, the EasyCharge demonstrates a stark performance divide. Its standout strength is feedback handling, scoring an excellent 5.0/5—slightly above the category average of 4.72. This means users can expect stable performance without whistling during typical daily activities. However, speech clarity metrics tell a different story: speech in quiet scores just 1.0/5, which is 2.40 points below the category average, and speech in noise also scores 1.0/5, falling 1.11 points below average. Music streaming scored 0.0/5, indicating this device is not suitable for audio enjoyment. Own-voice comfort is also limited at 1.9/5, which is 0.80 points below the prescription hearing aid average of 2.70. The device showed no improvement between initial and tuned fitting conditions, with both scoring 2.7/5. At this price point, shoppers should note that alternatives exist with meaningfully better performance. The RxEars Rxi, available in the same price range, scores 4.07/5. The EasyCharge may appeal to those prioritizing feedback-free operation on a tight budget, but its low speech clarity scores suggest significant limitations for everyday conversation.

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