Modification previous opinion ... I increase the note and from 3 to 4 * The sound on a good PC is much more powerful ... my past use was that of a smartphone and SmartDock why taking usb did not generate enough power for peak performance of these speakers ... On a laptop or a PC, the sound can spit much !!! So you can almost say that they are revolutionary :) Former comment [Nothing is mitigé.Le price is great but I do not find them very powerful ... in any case far less than my yet smaller speakers Hercules Diamond 2.0! in 2.5W (Report 2-3 which is huge) bought at 10 euros while QBS should be able to mount up to 15W ... Maybe a clamping or software or hardware limitation ...
Anyway ... the sound is quite ok but a little too quiet ... I wonder suddenly Ucube good as the speakers that use the same technology to store energy. Note they work as well with a PC with a phone with a USB host port in Android!
For the price (30 euros) I highly recommend them anyway because the sound is clear and the volume quite enough for a studio. It
