Autiphon U0 Series vs Otofonix Encore
Side-by-side HearAdvisor lab results with SoundGrades, expert pick badges, and the same visualizations we use in product reviews.

Autiphon U0 Series
The Autiphon U0 Series is a budget amplification product priced at $99, earning a C grade with a SoundScore of 2.9/5 in HearAdvisor's lab testing. This visible-in-ear device ranks #6 of 8 amplification products tested, placing it in the top 63% of its category. In our testing, the U0 Series demonstrates a mixed performance profile. Its standout strength is excellent feedback handling, scoring a perfect 5.0/5—well above the category average by 0.72 points. This means users are unlikely to experience whistling or squealing during normal use. Speech in quiet environments scores 2.3/5, which is 0.22 points above the category average, though still only mixed in absolute terms. The device shows notable limitations in other areas. Speech in noise performance is low at 1.0/5, falling 0.37 points below the category average—meaning challenging listening environments like restaurants or gatherings will be difficult. Music streaming capability is essentially non-functional, scoring 0.0/5 and sitting 1.16 points below category average. The Autiphon U0 Series is best suited for budget-conscious users who primarily need basic amplification in quieter settings and prioritize freedom from feedback issues. Those who frequently encounter noisy environments or want to stream music should consider alternatives. At this price point, the HSKLock Hearing Aid offers slightly higher overall performance at 2.98/5.

Otofonix Encore
The Otofonix Encore is a budget-priced prescription hearing aid available for $295, earning a C grade with a SoundScore of 2.7/5 in our lab testing. This behind-the-ear device ranks #37 of 39 in the Prescription Hearing Aid category, placing it in the bottom tier of its class. In our standardized testing, the Encore demonstrates one clear strength: excellent feedback handling at 4.7/5, which means users are unlikely to experience whistling or squealing during normal use. However, the device shows significant limitations in other areas. Speech intelligibility scores are low in both quiet (1.0/5) and noisy environments (1.0/5), falling 2.40 and 1.11 points below category averages respectively. Music streaming performance scored 0.0/5, indicating this device is not suitable for those who want to stream audio content. The Encore uses disposable batteries and comes in a traditional behind-the-ear style. Notably, our tuned fit testing showed a slight decrease in overall performance compared to the initial fit, with the normalized score dropping from 2.8/5 to 2.4/5. Own-voice comfort also declined substantially when moving to a more occluding coupling. At this price point, consumers may want to consider alternatives. The RxEars Rxi offers substantially better performance at a similar budget price point with a score of 4.07/5. The Otofonix Encore may appeal to buyers seeking a very low-cost entry into prescription hearing aids who prioritize feedback stability, but those needing reliable speech clarity or streaming capabilities should explore other options.
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