These crossfaders are new replacement parts equivalent to the part number DCV1006 and are suitable for DJM200, DJM300, DJM400, DJM500, DJM600, DJM700, DJM750, DJM800, DJM850, DJM900, DJM3000, DJM5000, DJM2000, DJM2000NXS & SVM1000 mixers. They are supplied WITHOUT the circuit board and need to be soldered to your own.