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Product Comparison

Phonak Sphere Infinio vs Zepp Clarity Pixie

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
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PhonakSoundGrade A

Phonak Sphere Infinio

The Phonak Sphere Infinio is a premium prescription behind-the-ear hearing aid released in 2024, priced at $4,898. In HearAdvisor's lab testing, it achieved a SoundScore of 5.0/5 and an A grade, ranking #1 among 36 prescription hearing aids tested. This device delivers exceptional speech performance, particularly in challenging listening environments. Speech in noise scored an excellent 4.7/5, measuring 2.74 points above the category average—a substantial margin that sets it apart from competitors. Speech in quiet also performed strongly at 4.5/5, sitting 1.15 points above average. Music streaming earned a strong 4.0/5, exceeding the category average by 1.36 points. The Sphere Infinio does show some trade-offs. Feedback handling scored a solid 3.6/5 in absolute terms, though this falls 1.11 points below the category average of 4.71/5. Own-voice comfort scored a mixed 2.3/5, slightly below the category average. These are areas where some competing premium devices perform better. This hearing aid is best suited for those who prioritize speech clarity, especially in noisy environments like restaurants or social gatherings. The behind-the-ear style offers rechargeable batteries and streaming compatibility with both iPhone and Android devices. Among premium-priced competitors like the Oticon Intent (4.85/5) and Oticon Real (4.75/5), the Sphere Infinio leads in overall sound performance, earning HearAdvisor's Expert's Choice Award for 2024 and 2023.

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ZeppSoundGrade B

Zepp Clarity Pixie

The Zepp Clarity Pixie is a mid-priced OTC hearing aid featuring an invisible-in-ear design, priced at $999. In our lab testing, it earned a B grade with a SoundScore of 3.6/5, placing it in the top 48% of OTC hearing aids tested. Speech clarity is a notable strength for the Pixie. It scores 3.6/5 for speech in quiet—a solid result that sits 0.77 points above the category average. Speech in noise performance is above the category average as well, though at 1.7/5 it remains low in absolute terms. Feedback handling is strong at 4.3/5, though slightly below the category average of 4.54/5. The Pixie shows significant limitations in other areas. Own-voice comfort scores just 1.5/5, falling 1.01 points below the category average—users may notice their own voice sounds unnatural or boomy. Music streaming is a particular weakness, scoring 0.0/5, which is 1.92 points below the category average. Those who frequently stream phone audio should consider alternatives. At this price point, competitors offer stronger overall performance. The Yeasound RIC800 and Sony CRE-E10 both score above 4.6/5 at similar prices. The Elehear Delight and Yeasound RIC700 deliver scores around 4.3/5 at lower price points. The Pixie may appeal to users who prioritize its discreet invisible-in-ear form factor and primarily need speech clarity in quieter environments, but those seeking well-rounded performance or music streaming should explore alternatives.

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Performance metrics

Scale 1-5 (Tuned)

Lab metric by fit

Scale 1-5 (Tuned)

Speech in quietNew
Phonak Sphere Infinio4.5
Zepp Clarity Pixie3.6
Speech in noiseNew
Phonak Sphere Infinio4.7
Zepp Clarity Pixie1.7
Own voice
Phonak Sphere Infinio2.3
Zepp Clarity Pixie1.5
Feedback handling
Phonak Sphere Infinio3.6
Zepp Clarity Pixie4.3
Music streaming
Phonak Sphere Infinio4.0
Zepp Clarity Pixie0.0
Overall fit score
Phonak Sphere Infinio5.2
Zepp Clarity Pixie3.6

Speech level

Adjust input dB (Tuned)

Amplification (REIG)

Insertion gain at 65 dB (Tuned)

Fitting configuration for tuned fit

Phonak Sphere InfinioZepp Clarity Pixie
Ear CouplingClosed Vented Dome
Ear CouplingPower Dome with Slits
ReceiverMedium-power
Receiver
Fitting FormulaAdaptive Phonak Digital 3.0 (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
Software Versionv10.0.0.2318
Software Version
Tuning AdjustmentsProgrammed to N3 audiogram, Feedback calibrated, Long-Term Experienced User, Other settings at manufacturer defaults
Tuning Adjustments
Notesn/a
Notes