So far the way my aids are set up, I cannot hear bass in music with the aids in, but can without them. It sounds like an odd thing to say, but unless the bass overpowers the dampening effect from the moulds, I cant hear bass at all. I wear large over ear headphones when listening to music just so I can hear music just like the way I did before without aids. (didnt have aids for a long time (30yrs) but was born deaf) But music is only comfortable to me WITH headphones IF my aids are in... I just take them out listening to music if I wanna listen headphone free.... You gotta have that bass. However, since I suffer recruitment, it doesnt matter how loud it is, I'll NEVER know the lyrics to any song unless I have practice while reading the lyrics on screen.