The speakers make extremely fun, listening to music on a new level. How have written several Rezesenten, a slight hum is the "Concept B 200" always there. Especially when the volume knob is turned up you can hear it clearly, to me he is usually on 1/4 and it's easy to hear ... I already hear the noise my PC fan, I do not mind the hum and clever by Steckdosenleiste go the speakers before turning off the computer out with. With a notebook afford or if you taxed the system with an iPod, the humming could well have a disruptive effect, everyone must decide for himself how he can live with it. Far more disturbing than the hum I find incredibly bright blue LED to indicate which input is currently selected. Unlike many other manufacturers devil pays attention to design, among others, I have decided for this reason for this system and not for an equivalent of Bose. Another reason is the external amplifier, especially when the built the computer sound card is not the best, this is a good alternative. Whether one is taxed the boxes via USB, jack or RCA completely free, also can be the sound adjust quickly by Bass and Treble controls and USB devices found by the built USB hub also always have a place. Despite hum and bright LED I can recommend the system. Listening to music has never been so much fun.
Connections: - USB input !!! Attention: USB cable is not included !!! (+ USB hub with 3 ports, one front and two rear) - Jack (MP3) input - RCA input - Microphone input (in standby mode active) - Headphone output - Two jack outputs (6.3mm for speakers)