"Good portable for MP3 players"3.5 starson by brett_h_l
Pros: CNET reviewer missed a pro for these speakers (CNET does that, as they don't have much tech prowess) - power adapter is 110V or 220V, good if you travel. Sound is good. Base is extended by patent 4,739,415 so base is colored,booms, hollow sounding.
Cons: Weak treble.
Summary: Getting harder to find good, small 2.0 amplified speakers these days, these may be the last. Over priced, but everything from Bose is these days. They charge allot and tend to put the minimum into their products. Seems to be sensitive enough for MP3 player input, using with Cowon D2. Have not measured input resistance.