They are supposed to sound very good and play fairly loud for their size.
From their specifications page:
Freq. Response: 80Hz-20kHz (DIN 4500)I guess it depends on what you consider to be "very good." The lack of bass and sub-bass response would be a deal-killer for me.
I note that they make no claims about great bass sound, and even provide a subwoofer output connection, so it's likely that they are being honest about their sound quality claims.
tanstaafl.