Very very good for music applications. Cannot comment on shaking the room or other such things Theatre-heads get up to. However the next model down is pretty good too - the Q100E or somesuch(?). Very good for music and easy to match. Also has a switch which changes it from acting as a subwoofer to acting as a woofer. In the first position you get deep bass extension. In the second you get enormous amounts of tight punchy bass, but without the extension (designed to make those garage doors and explosions shake the room I think).
