MDHearing VoltMax vs ReSound OMNIA miniRIE
Side-by-side HearAdvisor lab results with SoundGrades, expert pick badges, and the same visualizations we use in product reviews.

MDHearing VoltMax
The MDHearing VoltMax is a behind-the-ear OTC hearing aid priced at $699, earning a B grade with a SoundScore of 3.0/5 in our lab testing. This places it in the lower tier of the OTC hearing aid category, ranking 62nd out of 65 devices tested. In our testing, the VoltMax delivered mixed results across key performance areas. Its standout strength is excellent feedback handling, scoring a perfect 5.0/5—above the category average by 0.46 points. This means users can expect stable performance without whistling or squealing during typical daily activities. However, speech clarity proved challenging, with speech-in-quiet scoring 1.9/5 (0.93 points below category average) and speech-in-noise at 1.0/5 (0.48 points below average). Own-voice comfort measured 2.4/5, slightly below the category norm. A significant limitation is music streaming, which scored 0.0/5—nearly 2 points below the category average. Users who prioritize phone streaming for calls or media should consider alternatives. The device features rechargeable batteries, offering convenience over disposable options. At this price point, several competitors deliver substantially stronger overall performance. The VoltMax may appeal to budget-conscious consumers who primarily need basic amplification with reliable feedback control and don't require streaming capabilities. Those seeking better speech clarity or music streaming should explore higher-scoring options in this price range.
Choice

ReSound OMNIA miniRIE
The ReSound OMNIA miniRIE is a premium prescription behind-the-ear hearing aid released in 2022, priced at $4,764. In our lab testing, it earned a SoundScore of 4.0/5 (A grade), ranking #26 of 39 prescription hearing aids tested. This device demonstrates solid speech clarity in quiet environments, scoring 3.7/5—0.26 points above the category average. Own-voice comfort also measures slightly above average at 2.9/5. However, the OMNIA miniRIE struggles in challenging listening situations, with speech-in-noise performance scoring just 1.0/5, which is 1.11 points below the category average and low in absolute terms. This represents a significant limitation for users who frequently encounter noisy environments like restaurants or social gatherings. Feedback handling is strong in absolute terms at 4.1/5, though this falls 0.62 points below the prescription hearing aid category average of 4.72/5. Music streaming performance is mixed at 2.7/5, essentially matching the category average. The device offers modern connectivity features including iPhone and Android streaming, hands-free calling, and rechargeable batteries. While the OMNIA miniRIE has earned Expert's Choice Awards in 2023 and 2024, consumers in this premium price tier should note that several competitors—including the Phonak Sphere Infinio and Oticon Intent—achieve higher overall scores. This hearing aid may be best suited for individuals who prioritize performance in quieter settings and value ReSound's ecosystem, but those needing robust noise management should explore alternatives.
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