Looking for the hard to find Reticon sad-1024a chip . Yes i know they are expensive, my question is i have found ( on ALIBABA ) CHEAP priced Reticon sad-1024 chips on various sites,and i stress they are marked RETICON SAD-1024 , NO " A " IS ON THE CHIP . Also it's made in Mexico. Do these work in the various older effects pedals like the MXR M-117
or others of the day?