Professional scratch DJ, DJ Skilz helped American Audio design this 2-channel, feature packed scratch mixer. The Q-D5MKII features a rugged, long life Optical Fader built to handle the treacherous strain and ware scratch DJs put on crossfaders. The crossfader was factory tested for over 1 million crossfades back-and-forth and never quit working! Other featues include, Rotary Kills, crossfader curve adjustment and balanced XLR outputs.