Sanyo M9930

The Sanyo M9930 was an entry-level boombox from the early 1980s. It must have been very popular, because even today you can find multiple ones on eBay every single day. It's a 9 volt, 4 speaker model with an output of 2x2 watts. The amplifier consists of two LA4112 chips. There were a few different model variations depending on where it was sold, such as M9930A, M9930LU, M9930K, and maybe others.