Quite pleasant listening. The Kraftwerk via Jahn was also interesting, but the Mushrooms have a smoother ambience, which is of course not what the Krafties wanted.
I have one issue with these kind of bands - with their rhythms. They could have it changed almost imperceptibly, and still have some undulation in the rhythm, instead of a straight almost 1/1 pulse. But I think they liked that straight beat in those days, as they were trying to get away from the 'human' factor.