3-band EQ with kill filters, blue illuminated pots, 4-position routing each channel unit, outputs: Zone, Booth, Main-outs in XLR, cueing with split function, optional d.Pro FireWire expansion card for live scratching on a PC or Mac and the simultaneous playback of up to four pieces of music. In addition to expansion card, there is a copy of Mackie Tracktion, the d.4 Pro which also serves as the ultimate interface for multi-track recording.