Following the release of Traktor DJ for iPad and iPhone is the new Traktor Kontrol Z1, which works both with iOS devices and for PC & Mac (with Traktor Pro 2).
Compact 2-Channel Mixing Controller
High Quality Built-In Soundcard
3-Band EQ, gain, filter and pre-listen controls for both channels Pro-Quality precision knobs and faders
High visibility backlit buttons and meters
Lightweight, robust housing with ergonomic, portable profile Full iOS compatibility and charges iOS device (via CCK)