Midi controllers under $150 with lots of knobs - Equipment - lines
Overview | Grand Central USB MIDI Controller in CircuitPython | Adafruit Learning System
N32B DIY KIT | Natural Walnut - Shik
Midi Fighter
Amazon.com: AKAI Professional MPK Mini MK3 - 25 Key USB MIDI Keyboard Controller With 8 Backlit Drum Pads, 8 Knobs and Music Production Software Included : Everything Else
MIDI Controller with Loads of Faders, Knobs, App Support: Livid DS1 on Preorder [Gallery] - CDM Create Digital Music