Back to Comparisons
Product Comparison

Go Hearing Go Prime vs Phonak Sphere Infinio Ultra

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
Go Hearing Go Prime Hero
GoSoundScore 3.3Grade B

Go Hearing Go Prime

The Go Hearing Go Prime is a budget-priced OTC hearing aid available for $299, earning a B grade with a SoundScore of 3.3/5 in our lab testing. This visible-in-ear style device with rechargeable batteries ranks #50 of 65 OTC hearing aids tested, placing it in the top 75% of its category. In our testing, the Go Prime delivered mixed results across performance metrics. Its standout strength is excellent feedback handling, scoring a perfect 5.0/5—0.46 points above the category average. This means users can expect stable amplification without whistling during typical daily activities. However, speech clarity showed more modest performance, with speech in quiet scoring 2.7/5 and speech in noise at 1.1/5, both falling slightly below category averages. The device's most significant limitation is music streaming, which scored 0.0/5 in our testing—nearly 2 points below the category average. Users who prioritize phone audio streaming for calls or media should consider alternatives. Own-voice comfort also scored low at 1.8/5, which may result in a "boomy" quality when speaking. At its $299 price point, the Go Prime faces stiff competition. Higher-scoring alternatives in the same price range include the Elehear Beyond (4.34/5) and Apple AirPods Pro 2 (4.04/5). Budget-conscious shoppers might also consider the Olive Union Max or Lucid Enrich Pro, which offer comparable or better sound scores at lower prices. The Go Prime may suit those who prioritize feedback-free amplification and don't need streaming functionality, but most buyers would benefit from exploring these alternatives.

Expert Choice
Expert
Choice
Hero Image
PhonakSoundScore 4.9Grade A

Phonak Sphere Infinio Ultra

The Phonak Sphere Infinio Ultra is a premium behind-the-ear prescription hearing aid priced at $4,898. In HearAdvisor's lab testing, it earned an A grade with a SoundScore of 4.9/5, placing it in the top 5% of the 39 prescription hearing aids tested and ranking #3 in the category. This device demonstrates exceptional speech performance in our testing. Speech in noise scored 4.5/5—an excellent result that measures 2.40 points above the category average of 2.11/5. Speech in quiet also performed strongly at 4.3/5, which is 0.92 points above the category average. These results suggest the Sphere Infinio Ultra may particularly benefit users who frequently navigate challenging listening environments like restaurants or group conversations. Music streaming delivered a solid 3.3/5, measuring 0.54 points above category average. Own-voice comfort scored 2.8/5, which is above the category average by 0.10 points but remains mixed in absolute terms. Feedback handling measured 4.2/5—strong in absolute terms, though 0.52 points below the category average of 4.72/5. The Sphere Infinio Ultra is best suited for users seeking top-tier speech clarity who prioritize performance in noisy environments and are prepared to invest at the premium price tier. Those seeking similar sound quality at a lower price point may also consider the Phonak Sphere Infinio, which scored 4.98/5 in our testing.

We independently review each item we recommend and appreciate your trust and support. When you buy through our links, we may earn a commission. Learn More.

Performance metrics

Scale 1-5 (Tuned)

Lab metric by fit

Scale 1-5 (Tuned)

Speech in quietNew
Go Hearing Go Prime2.7
Phonak Sphere Infinio Ultra4.3
Speech in noiseNew
Go Hearing Go Prime1.1
Phonak Sphere Infinio Ultra4.5
Own voice
Go Hearing Go Prime1.8
Phonak Sphere Infinio Ultra2.8
Feedback handling
Go Hearing Go Prime5.0
Phonak Sphere Infinio Ultra4.2
Music streaming
Go Hearing Go Prime0.0
Phonak Sphere Infinio Ultra3.3
Overall fit score
Go Hearing Go Prime3.3
Phonak Sphere Infinio Ultra5.2

Speech level

Adjust input dB (Tuned)

Amplification (REIG)

Insertion gain at 65 dB (Tuned)

Fitting configuration for tuned fit

Go Hearing Go PrimePhonak Sphere Infinio Ultra
Ear CouplingClosed Dome
Ear CouplingEasyGuard Vented
Receiver–
ReceiverMedium-power
Fitting Formula–
Fitting FormulaAdaptive Phonak Digital 3.0 (Manufacturer proprietary targets)
Listening Program–
Listening ProgramAutoSense OS (Automatic)
Volume Setting–
Volume SettingAdjusted to match NAL-NL2 targets at 55, 65, and 75 dB SPL
Software Version–
Software VersionV1.1.11.0
Tuning Adjustments–
Tuning AdjustmentsProgrammed to N3 audiogram, Feedback calibrated, Long-Term Experienced User, Other settings at manufacturer defaults