I think it depends on what volume levels you listen to,
at lower levels you may not be able to hear any difference whatsoever,
i know that when i went from my yamaha 5450 to my hk 525,at lower volumes i could barely if any hear a difference "BUT" when i cranked it up to theater levels thats when the gunshots and the exsplosions and so on came to life, that goes for music also.And then maybe it depends on your hearing loss?