chebby:
Plastic Penguin, it is a very long time since I last heard a music-centre but with a (very) few exceptions they always sounded dire even without the comparison to budget seperates of the same era.
It is unfair to even mention systems like the Arcam Solo range (or the Naimuniti) in comparison to the horrors that were 'music-centres' in the 1970s. Their natural heirs are the mini and micro systems that have been with us almost since the music-centre disappeared, and of which there have also only ever been a few decent ones around at any one time. (Denon, Teac and Onkyo have been consistent over the years in knocking out some good budget mini/micro systems.)
Like always, chebs, it's a matter of opinion. I was drawing the concept that all-in-one systems aren't new.
We had a very expensive (at the time) JVC music centre connected to some Solavox PR35 floorstanding speakers and really sounded the biz.
True, not quite as involving as my seperates in my bedroom, but it wasn't 'night and day'.
Music centres in the 70's was utilising technology which, in the main, could only be obtained via cheap, hand held jobbies. The tape deck. Likewise the Uniti and Solo doin' the same with todays technology. So from that point of view, you can draw comparison (albeit sound quality has improved and they are more usable today - if you understand the concept of streaming).