<a class="wiki" href="Sony" rel="">Sony</a> made some of the highest quality mini boomboxes, including this one. There's a lot of build quality here. Metal handle, big magnets, great sound. It's got Line In, Line Out, separate bass and treble, Metal tape compatibility, and a PLL sythesizer digital tuner with 14 station presets. It was sold for 59,800 yen.
Its measurements are 365 x 120 x 72 mm, and it has 100mm speakers. It weighs 5.8 lbs, not including batteries (it takes four D-cells). It provides 2 watts per channel according to the Japanese EIAJ/DC standard.
The unit shown here had its speakers re-foamed by Boomboxery member JVC Floyd. He reports that in order to remove the speakers, first you need to remove the grills and there's a thin aluminum plate behind the grilles that covers the screws.
To seek the next station, hold down the scan button until you hear rapid beeps. To set a preset, hold down the memory button and press one of the preset buttons. For AC power you will need a special cable (maybe Sony-specific), because the cable input is smaller than any other boombox uses.