MDHearing VoltMax vs ReSound OMNIA RIE
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 mid-priced device ranks #62 of 65 in the OTC Hearing Aid category, placing it in the bottom portion of tested products. In our standardized testing, the VoltMax demonstrates excellent feedback handling at 5.0/5, scoring 0.46 points above the category average. This means users are unlikely to experience whistling or squealing during typical wear. However, speech performance presents significant challenges—speech in quiet scores a low 1.9/5 (0.93 points below average), while speech in noise scores 1.0/5 (0.48 points below average). These results suggest limited benefit for understanding conversation in both calm and challenging listening environments. Music streaming is a notable weakness, scoring 0.0/5 and falling 1.92 points below the category average. Users who prioritize streaming audio content from their phones should consider alternatives. Own-voice comfort is mixed at 2.4/5, roughly matching the category average. At this price point, several alternatives offer substantially stronger performance. Devices like the Yeasound RIC800 and Sony CRE-E10 score above 4.5/5 at similar or lower prices. The VoltMax may appeal to users who prioritize feedback-free wear and basic amplification with rechargeable convenience, but those seeking stronger speech clarity should explore higher-performing options in this price range.

ReSound OMNIA RIE
The ReSound OMNIA RIE is a premium prescription behind-the-ear hearing aid released in 2022, currently priced at $4,498. In HearAdvisor's lab testing, it earned a B grade with a SoundScore of 3.9/5, ranking #29 of 36 devices in the Prescription Hearing Aid category. This device shows a mixed performance profile in our testing. Its standout strength is speech clarity in quiet environments, scoring 3.7/5—a solid result that sits 0.42 points above the category average. Own-voice comfort also performs above average at 3.0/5, which may appeal to users concerned about how their own voice sounds while wearing hearing aids. However, the OMNIA RIE struggles significantly in challenging listening situations. Speech-in-noise performance scored just 1.0/5, falling 0.96 points below the category average—a notable limitation for users who frequently encounter noisy restaurants, gatherings, or other difficult acoustic environments. Feedback handling, while strong in absolute terms at 4.1/5, also trails the category average by 0.61 points. Music streaming delivers mixed results at 2.7/5, essentially matching the category average. The OMNIA RIE offers versatile connectivity with both iPhone and Android streaming, hands-free calling capability, and the flexibility of both rechargeable and disposable battery options. At its premium price point, however, several competitors in the same price range—including the Phonak Sphere Infinio and Oticon Intent—deliver substantially higher overall scores. This device may suit users who prioritize quiet conversation clarity and own-voice comfort over challenging noise performance.
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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