The NSX-SZ315R is a reasonably standard hi-fi system, and though it has a cd auto-changer, this is it's most unusual feature. The two tape decks can be useful for those with old in car audio, or just for simple audio recording.
The speakers are good quality, and not that large, with a slightly bass heavy sound. This can be adjusted with the various audio settings, however.
The remote is quite clearly set out, with a decent range, and batteries last several months before running out.
The tuner is quite variable in its quality - I think a specialist external aerial is a must for the best signal.
Considering the basic features of this Aiwa, it does take up a quite a large amount of room - I do not understand why it needs to be this big.
The CD sound is the best aspect of the Aiwa, with a rich sound, aided by the previously mentioned bass-weighted speakers. For the same reason, however, classical music does not sound its best when the Aiwa plays it.