Yes, I just looked it up and the HS series started using AWM samples in 1987 I hadn't realized they were before the SY77 which used AWM along with AFM in 1989


1987 — HS/HX series
Electones became more digital here. It used more integrated circuit technology to make components smaller, and hence allowed for a sleeker design. The HX/HS series was the first to use AWM (Advance Wave Memory) "sampling" technology for both voices and rhythms, and also featured 16-operator FM voices. AWM Voice expansion is also possible via sound packs.


I still have an SY77 with that same sound engine.