This is the Sharp GF-9292. It is part of the Shapr 9x9x series that included the GF-9090, GF-9191, GF-9292, GF-9494, GF-9595 and GF-9696. The big brother is the GF-9696. The GF-9292 is smaller has two 7 inch woofers and two 2 1/4 inch tweeters. Its dimensions in inches are: 21L x 5D x 11H.
It has a single cassette and most controls on the top panel.
One of these boxes recently sold in decent condition but with a dysfunctional tape head, broken antenna and corrosion in the battery compartment for $220.00