ArtDio, a Japanese manufacturer will put new active speakers on the market on the middle of June, the SW-528. Our device, a 2.1 system, features an 8 cm Subwoofer and 4cm Satellite. Our audio system provides 7.5Wx2 output power and 45W for Subwoofer.
Concerning the frequency response, you can expect 120Hz-20,000Hz for satellite and 70Hz-300Hz for the subwoofer. The SW-528 is provided with a cable remote control and an adaptor for mobile phone if you need to plug your phone.
It should be cost around 60 Euros.
http://www.akihabaranews.com/en/news-16129-SW-528B%3A+A+2.1+Audio+system+from+ArtDio.html