Akai Professional MPK61 - USB/MIDI Performance Keyboard MPK61
Amazon.com: AKAI Professional MPK261 - USB MIDI Keyboard Controller with 61 Semi Weighted Keys, Assignable MPC Controls, 16 Pads and Q-Links, Plug and Play : Musical Instruments
AKAI MPK61 demo (Reason emphasis) - YouTube
AKAI Professional MPK 261 – Thomann Magyarország
Right Hand Top PCB ASSY with switches and sliders - Akai MPK 61