There is a setting that drops volume when changing inputs. That's not the problem I was having. I left that feature on as it is a useful safety feature.
Update: The Libra DAC was faulty. It turned the volume up by itself to a painful level. Fanthorpes Hi-Fi, in Hull, collected it today. This fault occurred in fixed and variable output into a Hydra II Anniversary power amp. Serial Number: 150802. It was also making a very strange earthing noise...
I've got an ex-dem Leema Libra DAC connected to a Hydra II Anniversary Edition power amp [on loan]. The DAC turns the volume down by itself within ten minutes of switching on. However, the displayed volume level does not change. Does anyone know what is going wrong? It's connected to the amp via...