I know I built a Paiaa or what ever they are OLD flanger kit from just the schematic. It called for the 1024, but at the time NTE had a 1024 type chip. Most of the things that were not on their version were internally connected and the schematic had them externally connected the same way, so I eliminated some of the pins connections and it worked fine using a VCO and compander and some other things for clocking and not the usual suspect chip(s). It worked fine. I like the buffer in this design. I have too tight a budget to pay $60 for an SAD 1024 right now.
The MN series has worked well for me. I am crying about 1024 prices and dropped $10 on a 5000 chip that is analog computer delay line, and have no clue if it will work or not.
Try NTE's older books from the 1970s-80s. They made a 512 chip that some small shops still may have. It can be used much like the SAD 1024 and is the same thing as far as I can tell as it is a 512x2 chip. The pin out sure looks a lot alike to me, but I are not too smart~!
