i bought a dr-202 off ebay (seems fine, just the pads aren't really sensitive) and paired it up with my sp-202.
i looked in the Manual how to hook them up with midi. no Problem. But the Manual says something like "you can control the SP-202 Effects like Filter or Time Stretch with the Knobs of the DR-202"
They write it in the Manual that you CAN do it but not HOW
hope someone can help
(btw. how can i open the Thing up to get to the pads to clean them a bit? there is a big "copper plate" when you open the box and i don't get it how to remove it without breaking. it seems it's Held together near the Data-Wheel)