Was this made on the OP-1?

http://music.businesscasual.biz/album/mallsoft-odyssey


Have been listening to this album quite a bit lately and am noticing a lot of OP-1-esque sounds/effects on it. Notably on BERLIN WINDOWS SHOPPING PT. IV and V. Does anyone know for sure if it was made on the OP-1, besides the sampling which is heavily present throughout?

I dunno, but I like it.