Hi 96RAF You say the Class 08 has a 6 pin No Sound decoder socket, meaning (suggesting) you are unable to fit the Hornby R7321 HM7000-6 Bluetooth DCC Decoder to it. This must mean that to run it on DCC you will need a DCC controller such as Hornby’s Elite Digital Controller? Or can you fit the 6 pin Bluetooth DCC Decoder to the Class 08 and run it using the HM7000 app but without sound? New to DCC/HM7000 so thought I would ask as others who are new are bound to be wondering the same. If not, why are Hornby pushing HM7000 as the ‘best thing since sliced bread’ when some of their new TT:120 locos won’t run on the HM7000 app.