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

Audien Atom X
The Audien Atom X is a budget-priced OTC hearing aid available for $389, earning a B grade with a SoundScore of 3.3/5 in our lab testing. This visible-in-ear style device ranks #54 of 65 OTC hearing aids tested, placing it in the lower portion of the category. In our testing, the Atom X showed a mixed performance profile with notable strengths and weaknesses. Feedback handling was excellent at 5.0/5, scoring 0.46 points above the category average—meaning users are unlikely to experience whistling during normal wear. Music streaming was also a highlight at 3.3/5, coming in 1.38 points above the OTC average, making it a solid choice for those who prioritize audio entertainment. However, speech clarity showed limitations. Speech in quiet scored 1.5/5, falling 1.25 points below the category average, while speech in noise measured 1.0/5, which is 0.48 points below average. These low absolute scores suggest users may find speech understanding challenging, particularly in difficult listening environments. Own voice comfort was mixed at 2.3/5, slightly below the category average. The Atom X may appeal to budget-conscious consumers who prioritize streaming quality and feedback-free wear over speech enhancement. However, several competitors in the same price range—including the Elehear Beyond (4.36/5) and Apple AirPods Pro 2 (4.06/5)—offer stronger overall performance. Shoppers focused primarily on speech clarity may want to explore alternatives.

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.
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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