they require more, because the pitch is digital. on cdj-1000s for example the resolution is 0,02%, but on a TT the pitch is analog, so there really is no resolution there, so in theory you could get it perfect every time you mix, but i doubt anyone is capable of pulling that off just by ear. some crappy TTs can't hold their pitch very well though, so it doesn't stay in synch if you don't correct it. so in the end it's pretty much the same, depending on your TTs ability hold pitch and the pitch accuracy of the CDJs.

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