@pryso the simplest SH-10B2 on this site (there are many more)
Good to know, I asked JP about chip for mk2 (just for backup) and the answer was that they are not compatible.
Never owned SP-15, but I like SP-20 which is same size as SP-10mkII but with internal power supply.
FYI, the Fidelis Analog chip set is a replacement in the SP-15 as well as the SP-10 Mk 3.
Good to know, I asked JP about chip for mk2 (just for backup) and the answer was that they are not compatible.
Never owned SP-15, but I like SP-20 which is same size as SP-10mkII but with internal power supply.

