@davekoh ,

The process of hearing is different as the nerves are stimulated rather than amplifying sound like a hearing aid does. That doesn't mean that things will sound different in the long run. They may start off mechanical or like Mickey Mouse, but over time your brain will normalize what things sound like.

Your discrimination ought to be much improved compared to poor discrimination with your current hearing aid, but it may not be instant and may take effort to get there.

Dennis