The worst satisfaction evaluation scores about
using the HiFi ER 20 hearing protector concerned interference
by the protector of high frequency sound perception
and full time use of the hearing protector during shows;
• The most common negative sensations while
using the hearing protector were dampened voice and
pressure in the ears;
• There was a positive correlation between the presence
of hearing complaints and the sensation of decreased
tinnitus after using the hearing protector;
• 73.9% of musicians scored over 7 to reflect their
satisfaction with using the HiFi ER 20 hearing protector,
which suggests a favorable tendency towards accepting
this device.