Vestax's CF-X2 is an optional digital crossfader upgrade for the VCI-300MKII. The CF-X2 delivers improved performance with a razor sharp cut-in point (no "cut lag") for DJs that want to flex advanced scratch techniques. Note: Vestax recommends running the VCI-300MKII with the  SDC-7 power supply when using this fader as it takes power out of the unit if running off USB.