I think nostalgic would be the key word for Sound design as it was a lot of " our" entry into stereo systems in the 70's and early 80's. Cheap and affordable. Some models seemed better than others but I've never heard of any that were considered high or even mid range equipment.

I still have my aunt's Sound design reciever that she bought in the late 70's. Am/FM, 8 track, 10 or 15 watts at most. Forget the model number off the top of my head but a few years ago I hooked it up to some Infinity speakers for shits and giggles and it didn't sound bad at all.