Practically, the power supply via a USB port, which can save a further simmering power supply and the speakers go along with the PC easily.
I have expected that the speakers will have a modest bass reproduction - which is for the size even not bad. The treble is however indisputable useless: Not even after modulation of 12-20kHz bands (+ 15dB!) Comes out of this thing, which is approximately linear.
For background music in the office so ok - rather useless for music playback with excellent sound.
