do you know what type of synths bowie and eno used in the records Low and Heroes?..just out of curiousity really..thank you in a head

I may be wrong, but the synths sound a lot like Oberhiems and Moogs. They were the flavor of the day back in the 70's.

According to the liner notes:

On Low

David Bowie (vocals, guitar, pump bass, arp, tape cellos, tape horn and brass-synthetic strings, saxophones, harmonica, piano, pre-arranged percussion, synthetic strings, vibraphones, xylophones)

Brian Eno (vocals, splinter mini-moog, report arp, rimmer E.M.I., guitar treatments, chamberlain, piano, synthetics)

I know that doesn't give you a lot of specifics. I see what else I can dig up.

"Warszawa" was mainly done with the Moog. I don't know about the layering though, it's actually an Eno composition. I'm not sure how much Dave contributed to that track.