A first set of speakers stopped systematically received after 1:30 / 2 hours of use. A stop / start it possible to restart them. So back to the sender with Amazon and effective reception of another identical product (the same day as sending !!). In the end, used in parallel to an old television, connected to the Freebox, rendering is awesome. The bass are troublesome if too strong nickel after settings. The 2 inputs (RCA and Jack) are very practical to connect 2 audio systems without loss. The number of reviews presenting technical problems likely indicate a problem of quality of design and workmanship. But when they work I highly recommend for its good price / performance ratio. Good quality design