iHear MatriX vs MDHearing Volt
Side-by-side HearAdvisor lab results with SoundGrades, expert pick badges, and the same visualizations we use in product reviews.

iHear MatriX
The iHear MatriX is a budget-priced OTC hearing aid that earns a B grade with a SoundScore of 3.8/5, placing it in the top 40% of the OTC hearing aid category in our lab testing. At $499, this behind-the-ear device delivers solid speech performance that exceeds category averages, though with a notable tradeoff in streaming capabilities. Speech clarity is a clear strength for the MatriX. In quiet environments, it scores 4.0/5—a solid result that sits 1.17 points above the OTC category average. Speech in noise performance is more modest at 2.4/5, which is mixed in absolute terms but still 0.96 points above the typical OTC device. Feedback handling is excellent at 5.0/5, meaning users should experience minimal whistling during daily wear. The most significant limitation is music streaming, which scores 0.0/5—well below the category average of 1.92/5. While the MatriX supports both iPhone and Android streaming, audio fidelity for music is poor in our testing. Own-voice comfort is mixed at 2.7/5, roughly in line with category norms. The MatriX shows meaningful improvement with tuning, jumping from an Initial Score of 3.7/5 to a Tuned Score of 4.2/5. This suggests users who invest time in adjustment can unlock better performance. For budget-conscious buyers prioritizing speech understanding over music quality, the MatriX offers competitive value in its price range, though alternatives like the Elehear Beyond score higher overall at similar pricing.

MDHearing Volt
The MDHearing Volt is a budget-priced prescription hearing aid released in 2020, earning a B grade with a SoundScore of 3.0/5 in our lab testing. At $397, it sits in the lowest price tier for prescription devices, ranking #34 of 39 in its category. In our testing, the Volt showed a mixed performance profile with one standout strength: feedback handling scored an excellent 5.0/5, which is 0.28 points above the category average. This means users can expect minimal whistling or squealing during typical wear. However, speech performance was limited, with speech in quiet scoring 1.8/5 (1.65 points below average) and speech in noise at 1.0/5 (1.11 points below average). Own voice comfort was mixed at 2.6/5, roughly matching the category average. Music streaming capability was not functional in our testing, scoring 0.0/5—a significant limitation for users who want to stream audio from their phone. This is 2.76 points below the prescription hearing aid category average. The Volt may appeal to budget-conscious consumers who prioritize basic amplification and feedback-free wear over advanced speech enhancement or streaming features. Those seeking stronger speech performance in the same price range may want to consider alternatives like the RxEars Rxi, which scored 4.07/5 in our testing. The Volt's rechargeable battery and behind-the-ear design offer practical convenience, but its core sound performance reflects its entry-level positioning.
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)
Fitting configuration for tuned fit