Since I wanted to connect two devices (TV and DVD Playeer) to an analogue 5.1 sound system, I ordered the these favorable analog converter. After installing device worked equally. However, one must press a button, if you want to choose between the two devices. But find no problem. Either you can see a film about a DVD or TV, then you also do not permanently switched back and forth. Devices also I (for this low price) only recommend.