You may want to check out Kenton's Control Freak and Control Freak Studio as they both have programmable buttons and sliders (www.kenton.co.uk/). If you prefer knobs; you may want to look at Doepfer's site (www.doepfer.com) where they have a 64 knob unit that I can't remember the name of. I have not tried any of these but I am seriously considering one of the Kenton units to relieve the strain on my K25.