Table 1A.

Feature capabilities activated for brand A research hearing aids, when fitting basic-feature and premium-feature devices. Settings are given for each of the three programs: ED=Everyday, LL=Look-and-Listen, SF=Speech-Finder.

Feature	Premium A			Basic A
	ED	LL	SF	ED	LL	SF
Directional microphone	Automatic multi- channel adaptive	Dedicated multi- channel adaptive	Dedicated multi- channel adaptive & front-null capable	Automatic single- channel adaptive	Dedicated single- channel adaptive	Dedicated fixed omni- directional
Pinna simulation	Yes	No	No	No	No	No
Noise management	Automatic adjustment. More steps	Automatic adjustment. More steps	Automatic adjustment. More steps	Automatic adjustment. Fewer steps	Automatic adjustment. Fewer steps	Automatic adjustment. Fewer steps
Wind noise reduction	Yes	Yes	Yes	Yes	Yes	Yes
Impulse noise reduction	Yes	Yes	Yes	Yes	Yes	Yes
Reverberation reduction	(…………………………………Not available for this brand…………………………………)
Compression channels	16	16	16	8	8	8
Proprietary high-frequency processing	Yes	Yes	Yes	No	No	No
Binaural wireless link	Yes	Yes	Yes	Yes	Yes	Yes
Binaural data streaming	No	No	Yes	No	No	No
Environmental adaptation	More categories	More categories	More categories	Fewer categories	Fewer categories	Fewer categories
Self-learning	More levels & environ- ments	More levels & environ- ments	More levels & environ- ments	Fewer levels & environ- ments	Fewer levels & environ- ments	Fewer levels & environ- ments
Feedback management	Yes	Yes	Yes	Yes	Yes	Yes