Audien Atom Pro 2 vs HearingAssist Micro
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.

HearingAssist Micro
The HearingAssist Micro is a premium amplifier in the invisible-in-ear style, priced at $698. In our lab testing, it earned a B grade with a SoundScore of 3.6/5, placing it #3 among the 8 amplification products we've tested. This device shows a clear strength in speech clarity during quiet environments, scoring 3.5/5—a solid result that sits 1.35 points above the category average of 2.11/5. Feedback handling is also strong at 4.0/5, though slightly below the category average of 4.28/5. Own-voice comfort comes in at 2.8/5, which is above the category average but only mixed in absolute terms. The Micro has notable limitations. Speech-in-noise performance is low at 1.1/5, falling 0.31 points below the category average. Music streaming is where this device struggles most significantly, scoring 0.0/5—well below the already modest category average of 1.16/5. Users who want to stream audio from their phone should look elsewhere. The HearingAssist Micro may suit those prioritizing discreet, invisible-in-ear design and clear speech understanding in quieter settings. However, buyers seeking strong noise management or any music streaming capability should consider alternatives. At this price point, the Sennheiser Conversation Clear Plus offers notably higher overall performance, while options like the iHear MatriX deliver similar sound quality at a lower price.
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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)
Fitting configuration for tuned fit