Audien Atom Pro 2 vs Otofonix Helix
Side-by-side HearAdvisor lab results with SoundGrades, expert pick badges, and the same visualizations we use in product reviews.

Audien Atom Pro 2
The Audien Atom Pro 2 is a budget-priced OTC hearing aid that earns a B grade with a SoundScore of 3.3/5 in our lab testing. At $289, it sits in the lower price tier of the OTC category, though several competitors at similar or lower prices deliver stronger overall performance. In our testing, the Atom Pro 2 showed a clear strength in feedback handling, scoring an excellent 5.0/5—0.46 points above the category average. This means users are unlikely to experience whistling or squealing during normal wear. However, the device showed mixed results for speech clarity, with speech in quiet scoring 2.3/5 (0.49 points below category average) and speech in noise at 1.3/5 (0.16 points below average). Own-voice comfort was slightly above average at 2.6/5, though still mixed in absolute terms. The most significant limitation is music streaming, which scored 0.0/5—nearly 2 points below the category average. Users who want to stream phone calls or music through their hearing aids should consider alternatives like the Olive Union Air or Elehear Beyond, which offer substantially better streaming performance. The Atom Pro 2 may suit budget-conscious buyers who prioritize basic amplification without feedback issues and don't need streaming functionality. However, shoppers in this price range should also consider the Linner Saturn or Olive Union Air, which offer similar or better sound performance at lower prices.

Otofonix Helix
The Otofonix Helix is a behind-the-ear amplification product priced at $695, earning a C grade with a SoundScore of 2.7/5 in our lab testing. This places it in the lower tier of the amplification product category, ranking #7 of 8 devices tested. In our standardized testing, the Helix demonstrates one clear strength: excellent feedback handling, scoring a perfect 5.0/5—well above the category average. This means users can expect stable performance without whistling or squealing during normal wear and head movements. However, the Helix shows significant limitations in other areas. Speech clarity scores are low in both quiet (1.0/5) and noisy (1.0/5) environments, falling below category averages by 1.11 and 0.37 points respectively. Music streaming capability scored 0.0/5, indicating this device is not suitable for those who want to stream audio content. Own-voice comfort is also a weakness, particularly in the tuned configuration. At this price point, consumers should be aware that several alternatives in the same range offer stronger overall performance. The Otofonix Helix may appeal to those who prioritize feedback-free operation above other factors, but those seeking better speech understanding or streaming functionality should explore other options in the amplification product category.
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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
Using MUSHRA scenes (Tuned)
Fitting configuration for tuned fit