Flat TVs have installed for reasons of space no good speakers. If you want to hear a good sound, it is necessary to listen to the TV sound via an external Hi-Fi system. This is very easy with a DA converter and a Toslink is connected between the TV and Hi Fi system. I have a 6064 Oehlbach taken with an optical Toslink. It works perfectly. The DA converter has a power consumption of about 1 Watt !! So pillepalle! The delivery was quick and to my satisfaction