I totally disagree with postsprécédents .. I have these plates since I started. after .. it depends not be the series but I guarantee you that I have never created problems for once. This is a product that is correct and the effects are nice (filter flanger) and add that the handling is more intuitive. in short a very nice little toy for beginers who made me takes off in the djing .. While we do not keep a lifetime (pioneer forces) but I am very happy at all .. salutaions