The thing is the speakers built-in all over HTC's devices are far way below the average in quality. It's always not recomended to boost the ORNAMENTAL speaker with WOW which, literally speaking, THRUSTS the EYECANDAY as a dagger.....
-------------Apply WOW only when you enjoy music with earpeices, a2dp or not.------------
ah?? I didn't mistake your words, did i@_@? What I meant was WOW could be good only when the music is delivered via earpieces and it could be harmful for HTC's "makeshift" speakers. That's why I recomended to "turn off" WOW when you were not enjoying music with earpieces since it, as you mentioned earlier, was not working for the speaker or eyecandy or whatever but by no means "ear-candy". By turning off WOW you might remain the speaker intact while indulge yourself with music from earpieces^^" Hopefully I've made myself clear this time. It's, still, strongly recomended to disable the speaker-enabled WOW for the sake of the "longevity" of the ephemerous speaker. Only if my words do not fail me again@_@"