Hi all, My Pioneer amp for the past 2 months has been showing the wrong audio information on the display and I don't know if I've played around with the settings and set it up wrongly or what. It shows any 5.1 disc as THX SURR-EX and any vanilla DTS disc as DTS-ES even though the discs aren't recorded that way. It used to be fine! Does anyone know what the problem might be??