Ion Discover DJ Pro
Ion Discover DJ Pro is a 2-deck controller with integrated audio interface and iPhone dock.
The basic operation for this controller is working:
- play / pause / reverse
- cue to headphone
- crossfader
- deck volume control
- sync & pitch control
- scratching
- sound control bass, mid & treble
But this controller mapping is definitely not "perfect" an might need some more rework for other more advanced features to get working. Please discuss issues and questions on the forum and provide enhancements to this controller mapping via Github.
This is the Mixxx Wiki - 
Mixxx is a free and open-source DJ software.
Manual
Hardware Compatibility
Reporting Bugs
Getting Involved
Contribution Guidelines
Coding Guidelines
Using Git
Developer Guide
Creating Skins
Contributing Mappings
Mixxx Controls
MIDI Scripting
Components JS
HID Scripting