This Knob-Packed MIDI Controller Is a Remixer's Delight | WIRED
Midi Fighter
FaderFox PC12 - possibly the best MIDI knob controller ever made? - Gearspace.com
Midi controller with lots of knobs - ludatao
Khanka Hard Travel Case Replacement for Donner DMK 25 MIDI Keyboard Controller Music Mini Key With 8 Backlit Drum Pads, 4 Knobs 4 control faders MIDI Controller,Case Only : Amazon.ca: Musical Instruments,
4 Things to Consider when Designing your own Hardware Music Controller