On page 83 of the 505 manual it explains the program change; how all the pads are a specific note, and this, i think, cannot be changed. 18 user reviews on Boss SP- 505 Groove Sampling Workstation. For your convenience. Support - RC- 505 Owner' s Manuals. Owner’ s Manual Thank you, and congratulations on your choice of the BOSS SP- 505 Groove Sampling Workstation.The manual is only as think as a few bits of junk mail. Before using this unit, carefully read the. Owner' s Manuals ( N- S). Shop with confidence. Mar 23, · did you use the qy70 to sequence the remix16 or did you use the sp- 505 to sequence the qy70?