Lucid Ultra 128 vs Signia Pure C&G IX
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

Signia Pure C&G IX
The Signia Pure C&G IX is a premium behind-the-ear prescription hearing aid released in 2023, currently available at $3,298. In HearAdvisor's lab testing, it earned an A grade with a SoundScore of 4.1/5, ranking #22 among 39 prescription hearing aids tested. This device demonstrates notable strengths in speech clarity and feedback control. Speech in quiet scored 4.0/5, which is 0.57 points above the category average—a meaningful advantage for everyday conversations. Feedback handling achieved a perfect 5.0/5, sitting 0.28 points above the already-high category average of 4.72/5. Own-voice comfort also performed well at 3.2/5, exceeding the category average by 0.50 points. Speech in noise presents a more mixed picture. While the 2.2/5 score is technically above the category average by 0.10 points, it remains modest in absolute terms—something to consider if challenging listening environments are a priority. Music streaming scored a solid 3.0/5, sitting 0.24 points above average. The Pure C&G IX features rechargeable batteries and supports streaming to both iPhone and Android devices, including hands-free calling. At this premium price point, competitors like the Phonak Sphere Infinio (4.98/5) and Oticon Intent (4.83/5) achieve higher overall scores. This device may suit those who prioritize clear speech in quieter settings and excellent feedback stability, though buyers seeking stronger noise performance may want to compare alternatives.
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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)
Fitting configuration for tuned fit