I bought this product to compensate for the lack of analog connection on the last freebox: -The sound down and back without stopping when watching TV. - Disconnect the PASSTHROUGH on the box at the DVD / BD for viewing because Dolby is not therefore treated her. - The processing of the signal is poor: his "tin can" unpleasant.
I compared with another temporary system: an old MD walkman recording mode, connected via the optical IN and OUT via a simple mini jack / RCA: more signal processing problem and much better quality.
This remains an inexpensive solution compared to buying a dedicated amp.