Lucid Ultra 128 vs RxEars Rxi
Side-by-side HearAdvisor lab results with SoundGrades, expert pick badges, and the same visualizations we use in product reviews.
Choice

Lucid Ultra 128
The Lucid Ultra 128 is a premium behind-the-ear prescription hearing aid priced at $5,000, earning an A grade with a SoundScore of 4.4/5 in our lab testing. It ranks #17 among 39 prescription hearing aids tested, placing it in the top 41% of its category. Speech performance is where the Lucid Ultra 128 truly excels. In our lab testing, speech in quiet scored a strong 4.3/5, which is 0.95 points above the category average. Speech in noise performance reached 2.7/5, which sits above the category average by 0.59 points, though it remains mixed in absolute terms. This suggests the device handles conversational clarity well in our test scenarios, particularly in quieter environments. The device does face some challenges. Feedback handling scored just 1.7/5, falling 3.02 points below the category average of 4.72/5—a notable weakness compared to other prescription aids in our testing. Music streaming also came in below average at 2.3/5, which is 0.46 points under the category norm. Own-voice comfort scored a mixed 2.9/5, slightly above average. At this price point, several competitors in our database achieved higher overall scores, including the Phonak Sphere Infinio and Oticon Intent. The Lucid Ultra 128 features disposable batteries and supports both iPhone and Android streaming. It may appeal to users who prioritize speech clarity in quiet settings and are less concerned about feedback stability or music streaming fidelity in our standardized tests.
Choice

RxEars Rxi
The RxEars Rxi is a budget-priced prescription hearing aid in an invisible-in-ear style, earning an A grade with a SoundScore of 4.1/5 in our lab testing. At $499, it ranks #24 of 39 prescription hearing aids tested, placing it in the top 59% of its category. This device demonstrates notable strengths in speech understanding in quiet environments, scoring 4.3/5—a strong result that sits 0.89 points above the category average of 3.40/5. Feedback handling is excellent at 4.7/5, providing stable performance during movement without the whistling that can plague some hearing aids. Speech in noise performance is mixed at 2.1/5, essentially matching the category average. The RxEars Rxi has significant limitations to consider. Own-voice comfort scores low at 1.6/5, falling 1.10 points below the category average—users may notice their own voice sounds unnatural or boomy. Music streaming is not supported, scoring 0.0/5, which is 2.76 points below the category average. This device uses disposable batteries rather than rechargeables. The RxEars Rxi is best suited for users who prioritize discreet cosmetics and clear speech understanding in quieter settings, and who don't need music streaming capabilities. Those sensitive to own-voice quality or who frequently listen to streamed audio 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)
Fitting configuration for tuned fit