The design of Yamaha's classic line of medium sized separates, i.e.
http://www.hifi-archiv.info/Yamaha/1996/a(3).jpg used to fascinate me when I was a teenager. The tray loading tape deck was something special and up till today I like this style, especially with All-in-one systems.
T+A with their M800 series took this approach even further, with the components including back panels to hide the cabling. Everything looked neat and tidy even when placing that little system in the middle of a room. Their design language has been rather constant for decades and still does not look outdated, which is quite a feat.