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Product Comparison

Phonak Audéo EON Sphere vs RCA In-Ear

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.

RCA In-Ear Hero
RCASoundGrade C

RCA In-Ear

The RCA In-Ear is a budget OTC hearing aid priced at $249, earning a C grade with a SoundScore of 2.8/5 in our lab testing. This places it near the bottom of the OTC category at #64 of 65 devices tested. Speech performance is a significant weakness for this device. Speech in quiet scores just 1.0/5, falling 1.79 points below the category average, while speech in noise also scores 1.0/5, sitting 0.48 points below average. These low absolute scores indicate limited benefit for understanding conversation in most listening situations. Music streaming scored 0.0/5, measuring 1.92 points below the category average—this device is not suitable for audio entertainment. The RCA In-Ear does show strength in feedback handling, scoring an excellent 5.0/5, which is 0.46 points above the category average. Own-voice comfort is mixed at 2.6/5, essentially matching the category average with only a 0.09-point advantage. The rechargeable battery design offers convenience for daily use. At this price point, consumers have substantially higher-performing alternatives. Devices like the Elehear Beyond (4.36/5), Apple AirPods Pro 2 (4.06/5), and several others in the same budget range deliver meaningfully better speech clarity and overall sound quality. The RCA In-Ear may appeal to those prioritizing feedback-free operation above all else, but most users seeking improved hearing will find better value elsewhere in the OTC market.

Performance metrics

Scale 1-5 (Tuned)

Lab metric by fit

Scale 1-5 (Tuned)

Speech in quietNew
Phonak Audéo EON Sphere 4.3
RCA In-Ear1.0
Speech in noiseNew
Phonak Audéo EON Sphere 4.5
RCA In-Ear1.0
Own voice
Phonak Audéo EON Sphere 2.8
RCA In-Ear2.6
Feedback handling
Phonak Audéo EON Sphere 4.6
RCA In-Ear5.0
Music streaming
Phonak Audéo EON Sphere 3.7
RCA In-Ear0.0
Overall fit score
Phonak Audéo EON Sphere 5.2
RCA In-Ear2.8

Speech level

Adjust input dB (Tuned)

Amplification (REIG)

Insertion gain at 65 dB (Tuned)

Fitting configuration for tuned fit

Phonak Audéo EON Sphere RCA In-Ear
Ear CouplingEasyGuard Vented
Ear CouplingClosed Vented 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