My ears are telling me that it's not Alphinaud's JP voice actor, but many people insist it is. It's for sure not Arbert's JP voice (though Jun'ichi Suwabe can go pretty high, his vocal texture is wrong). Closest match in the existing JP cast is actually Urianger ft. KENN (who voices a few other recurring characters as well), but even then I still think The Voice's particular high/low blend is a little different from anything in the repertoires of the current cast.