Hit my converter here at Amazon ordered to my Apple TV with my Stereo system to connect (Technics), since these optical unfortunately no Audio input features. I can only say, it works beautifully! ATV to the transducer with the connected optical cables, the RCA plugs into the stereo and off we went. The sound quality is consistently good, here's my view nothing to complain about. If ATV is then made a slight noise will come from the speakers to hear what but normally is in the case.
For the price I think it will be found little better, I'm definitely very happy with this device!