Anybody used to classical music would want something better than that - their speakers are like something out of a ghetto-blaster and they don't have the power to drive anything bigger (hence the absence of standard hi-fi speaker connectors). The radio signal will be much higher quality than what those devices can reproduce. (Maybe they could feed into a standard hi-fi Shep already has?)

Also you might find classical music using FLAC and OGG formats, which neither of those supports.

The DMTECH seems to require a Windows-based host computer and the CC seems not to, but they aren't very clear about that.