Mailist to discuss all issues regarding the Digitech GSP-2101 Guitar FX Processor

i want something with knobs so i can controll parameters liek i sould
on a normal stomp box, i have a radium 49 that has some knobs and
sliders, can i use that? is so any help would be awesome, i have the
control one as well can i use them at the same time? im new to midi...