Hello Kenny,
thanks for your answer. I can play PCM files very well. The Tubulus Concentus ( special cofiguration - Marks information about the pin connection) is a very good cable. There is only a marginal difference to an 4K cable from JPS Labs. I believe I have made the correct setting in HQ Player. The setting SDM -PCM conversion transfers DSD files over DoP to my La Scala DAC. I have a good sound and there is nothing more to do. But thank you very much for your explainations. Have a Merry Christmas and a Happy New Year. ( I have to excuse me for my Bad English)
Günter