1979 was a good year to physically bring to life the most famous slogan of the 1970s : "Small is BIG".
Sony did it first with the original Precise system (early/mid 1978), then with the two Falcon systems (late '78) ; Technics did its own with the C-01 components, Aurex/Toshiba with the (excellent) "15" system, alongside Aiwa's "22" system which would be rebadged by many manufacturers until 1983/84.
If we are now used to see minisystems and even -literally- microscopic ones, in 1979 all this was new, quite fascinating and still built like full-fledged components: fair componentry, good mechanics and even high-end features like Pulse power supplies or elaborate MC stages.
Needless to say, mini and micro systems would never be built like this again until some (Sony, Teac, Harman/Kardon or Luxman/Alpine) did attempt to make good-sound-in-a-shoebox when the audio market itself was beginning to show definitive signs of weakness in the early 1990s.

Technics' C-01 units did sport that brand's 1979 sober design, many technical features imported from their (much) bigger siblings and the amplifier did even reach as far out as to be powered by a Pulse Power Supply - a feature more commonly associated with Sony.

1978 was the big turnaround and the units mentioned above did embody what was to come: small, unobtrusive and easy to use. All that was needed to complete the new picture was... CD. And CD spells Compact Disc.

The C01 series existed in black as well, but that is an xxxxxx-rare object.