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Product Comparison

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.

Uses Official HearAdvisor Lab Data
Expert Choice
Expert
Choice
Lucid Ultra 128  Hero
LucidSoundGrade A

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 #16 of 36 devices in the Prescription Hearing Aid category. Speech performance is a clear strength for the Ultra 128. In our testing, speech in quiet scored a strong 4.3/5, landing 1.03 points above the category average. Speech in noise measured 2.7/5—above the category average by 0.74 points, though mixed in absolute terms. These results suggest the device prioritizes intelligibility in everyday listening situations. The Ultra 128 does show notable weaknesses. Feedback handling scored just 1.7/5, falling 3.01 points below the category average of 4.71/5—a significant gap that prospective buyers should consider. Music streaming measured 2.3/5, slightly below the category average. Own-voice comfort was mixed at 2.9/5, though this sits just above the category norm. The device uses disposable batteries and supports streaming to both iPhone and Android. At this price point, buyers may want to compare against higher-scoring competitors like the Phonak Sphere Infinio (5.0/5) or Oticon Intent (4.85/5). The Lucid Ultra 128 may suit those who prioritize speech clarity in quieter environments and can work with their hearing care provider to manage its feedback limitations.

Expert Choice
Expert
Choice
RxEars Rxi Hero
RxEarsSoundGrade A

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 represents one of the most affordable options in the prescription hearing aid category while still delivering solid overall performance. Speech clarity is a notable strength for this device. In quiet listening environments, the Rxi scores 4.3/5, which is 0.97 points above the category average—a strong result that should benefit users in conversational settings at home or in calm environments. Speech understanding in noisy conditions scores 2.1/5, slightly above the category average by 0.16 points, though this remains mixed in absolute terms and may present challenges in demanding acoustic situations like busy restaurants. Feedback handling is excellent at 4.7/5, essentially matching the category average and indicating reliable stability during daily wear. However, the Rxi shows notable limitations in other areas. Own-voice comfort scores 1.6/5, falling 1.15 points below the category average, which may result in a hollow or boomy perception of your own voice. Music streaming is not supported, scoring 0.0/5—a significant gap of 2.64 points below category average that buyers should consider if streaming audio matters to them. The RxEars Rxi is best suited for budget-conscious consumers who prioritize speech clarity in quieter environments and don't require streaming capabilities. Its invisible form factor and disposable battery design offer convenience, though those seeking better own-voice comfort or music features should explore alternatives.

Performance metrics

Scale 1-5 (Tuned)

Lab metric by fit

Scale 1-5 (Tuned)

Speech in quietNew
Lucid Ultra 1284.3
RxEars Rxi4.3
Speech in noiseNew
Lucid Ultra 1282.7
RxEars Rxi2.1
Own voice
Lucid Ultra 1282.9
RxEars Rxi1.6
Feedback handling
Lucid Ultra 1281.7
RxEars Rxi4.7
Music streaming
Lucid Ultra 1282.3
RxEars Rxi0.0
Overall fit score
Lucid Ultra 1284.2
RxEars Rxi4.1

Speech level

Adjust input dB (Tuned)

Amplification (REIG)

Insertion gain at 65 dB (Tuned)

Fitting configuration for tuned fit

Lucid Ultra 128RxEars Rxi
Ear CouplingClosed Vented Dome
Ear CouplingClosed Dome
ReceiverStandard
Receiver
Fitting FormulaProprietary manufacturer default
Fitting Formula
Listening ProgramLucid (Automatic)
Listening Program
Volume Setting54% (Default 7/13)
Volume Setting
Software VersionBT Firmware v12.0.29, Firmware v9.2.33
Software Version
Tuning AdjustmentsProgrammed to N3 audiogram by Lucid team, LucidShape adjusted to match NAL-NL2 targets at 65 dB SPL, Other settings at manufacturer default
Tuning Adjustments
NotesDefault programming was performed by Lucid team, further adjustments were limited as we did not have access to their proprietary software.
Notes