A good system will highlight deficiencies in a poor recording just as it will bring out the fullness of a great recording.  It is the nature of decent hi-fi to reveal what is put on the disk, but, and it is an important but, even the poorly produced album will sound better on a good system that it will on one lower down the order.  Good and bad are surely relative in the context of the system.  A poor recording will not sound better on a cheap hi-fi than an expensive one.