i bought the single version for 20 euro's. the sound is amazing from a speaker that small. and it comes with a rechargable battery, that can be charged with the diamond charger. (it really is amazing. when i turned it on i went wow, and so did everybody in the room, which is about 15 meters long)
it connects to the sound source with a 3,5 earphone plug. but the speaker itself has a miniusb connection for sound and power.
has anyone seen a connector that has extusb on one side and miniusb MALE on the other side? or miniusb to miniusb with sound connected?