MDHearing VoltMax vs Signia Active Mini IX
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

Signia Active Mini IX
The Signia Active Mini IX is a premium prescription hearing aid with a visible-in-ear design, priced at $4,696. In HearAdvisor's lab testing, it earned an A grade with a SoundScore of 4.5/5, ranking #14 of 39 prescription hearing aids tested—placing it in the top 33% of its category. This device demonstrates strong speech clarity performance in our testing. Speech in quiet scored 4.1/5, which is +0.71 points above the category average of 3.40/5. Speech in noise measured 2.6/5—above the category average by +0.46 points, though only mixed in absolute terms at 2.6/5. Music streaming is a notable strength at 3.6/5, outperforming the category average by +0.84 points. Own-voice comfort scored a solid 3.2/5, sitting +0.50 points above average. However, feedback handling represents a limitation for this device, scoring 2.5/5—a mixed result that falls -2.22 points below the category average of 4.72/5. Users sensitive to feedback may want to discuss this with their hearing care provider. The Signia Active Mini IX delivers excellent overall sound performance with particular strengths in speech clarity and streaming audio quality. It's best suited for users who prioritize these capabilities and can work with their provider to manage the feedback handling limitations. The earbud-style design offers a modern, discreet appearance for those who prefer visible-in-ear devices.
Performance metrics
Scale 1-5 (Tuned)
Lab metric by fit
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Speech level
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Amplification (REIG)
Insertion gain at 65 dB (Tuned)
Audio scenes
Recorded samples (Tuned)
Fitting configuration for tuned fit