It seems there were several manufacturers who made Alembic-like instruments in the late '70s to early 80's in Japan and Korea. The Fernandes copies and the Aria Pro II RS850 sported low impedance active PUs with a dummy hum canceller, filters and Q switches. Several others, like the Ibanez Musician series, some Cort guitars, Westone, Daion, Fresher, Greco, and others made hippie sandwich instruments that were very much influenced by Alembic.
Bill, tgo