Dj Tech Tools Midi Fighter Twister
MIDI Fighter Twister is a MIDI controller by DJ Tech Tools.
It features 16 knobs that you can press as buttons.
You can reset each knob by pressing it. And you can toggle PFL by pressing faders knob.
It would be great to map this controller for Mixxx's effects too.
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