Audien Hearing Atom 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.

Audien Hearing Atom
The Audien Hearing Atom is a budget-priced OTC hearing aid that earns a B grade with a SoundScore of 3.3/5 in our lab testing. At $89, it represents one of the most affordable entry points into amplification, though its performance reflects that positioning with a rank of #52 among 65 OTC hearing aids tested. The Atom's standout strength is its excellent feedback handling, scoring a perfect 5.0/5—above the category average by 0.46 points. This means users can expect stable amplification without the whistling that can plague some budget devices. However, speech performance is more limited: speech in quiet scores a mixed 2.6/5 (0.15 points below category average), while speech in noise drops to a low 1.0/5 (0.48 points below average). A significant limitation is the complete lack of music streaming capability, scoring 0.0/5—nearly 2 points below the already-modest category average. Own-voice comfort also falls below average at 2.1/5. These results suggest the Atom is designed purely for basic amplification rather than multimedia use. The Atom may suit buyers seeking the most affordable path to mild amplification who prioritize stability over advanced features. However, several competitors in the same price range offer substantially better performance—some scoring a full point higher. Those willing to consider alternatives may find meaningfully better speech clarity and additional capabilities without significant price increases.
Choice

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.
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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)
Audio scenes
Recorded samples (Tuned)
Fitting configuration for tuned fit