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Product Comparison

Phonak Audéo EON Sphere 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
Product Image
PhonakSoundGrade A

Phonak Audéo EON Sphere

The Phonak Audéo EON Sphere is a premium behind-the-ear prescription hearing aid priced at $4,398. In HearAdvisor's lab testing, it earned a SoundScore of 5.0/5 and an A grade, placing it among the top performers in the prescription hearing aid category. Speech performance stands out as this device's greatest strength. Speech in noise scored an excellent 4.5/5, a full 2.53 points above the category average of 1.96/5—a substantial margin that makes this one of the strongest performers in challenging listening environments. Speech in quiet also performed well at 4.3/5, nearly a full point above the category average. These results suggest the Audéo EON Sphere may be particularly well-suited for users who frequently encounter noisy social settings or group conversations. Music streaming delivered a solid 3.7/5, more than a point above the category average of 2.64/5, indicating above-average audio fidelity for phone-streamed content. Own-voice comfort scored 2.8/5, which sits just above the category average but reflects mixed absolute performance—users sensitive to occlusion effects should discuss this with their hearing care provider. Feedback handling scored an excellent 4.6/5 in absolute terms, though it lands slightly below the category average of 4.71/5. The Audéo EON Sphere represents Phonak's latest premium technology and delivers strong results across most metrics in our standardized testing. It's best suited for users prioritizing speech clarity in difficult listening situations who are prepared for the premium price point.

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
Phonak Audéo EON Sphere 4.3
RxEars Rxi4.3
Speech in noiseNew
Phonak Audéo EON Sphere 4.5
RxEars Rxi2.1
Own voice
Phonak Audéo EON Sphere 2.8
RxEars Rxi1.6
Feedback handling
Phonak Audéo EON Sphere 4.6
RxEars Rxi4.7
Music streaming
Phonak Audéo EON Sphere 3.7
RxEars Rxi0.0
Overall fit score
Phonak Audéo EON Sphere 5.2
RxEars Rxi4.1

Speech level

Adjust input dB (Tuned)

Amplification (REIG)

Insertion gain at 65 dB (Tuned)

Fitting configuration for tuned fit

Phonak Audéo EON Sphere RxEars Rxi
Ear CouplingEasyGuard Vented
Ear CouplingClosed Dome
ReceiverMedium-power
Receiver
Fitting FormulaAdaptive Phonak Digital 4.0 (Manufacturer proprietary targets)
Fitting Formula
Listening ProgramAutoSense OS (Automatic)
Listening Program
Volume SettingAdjusted to match NAL-NL2 targets at 55, 65, and 75 dB SPL
Volume Setting
Tuning AdjustmentsProgrammed to N3 audiogram, Feedback calibrated, Long-Term Experienced User, Other settings at manufacturer defaults
Tuning Adjustments