Definately sounds louder, most music does sound better, some sounds distorted or muddy not sure how to describe it. It would be great if there was a way to toggle it on/off.
After doing some more tests in absolute quiet environment, I have to admit, I don't hear any difference. Wheather I use the headphones or listen through the speaker, the volume is not any louder and music does not sound clearer or something.
sounds great, some songs i cant tell if there is much of a difference but they are all poor quality songs to begin with. Everything else is tip top! Using Bose IE2 ear buds not sure that matters or not