95% manual. Its so easy, loops, effects, beatmatching grooving to the beat that I forget snyc is there. I use it mostly when using 4 decks but I dont have many songs beat matched correctly. I find when I do use the sync button, its like it kills my bounce, my groove to the beat, its like I'm a robot just pushing and mashing buttons. Dont get me wrong, I'm glad its there, I just like working hard.