I have a 4.5 yr old BDA-3 and having not used it for a while have found that the output of the RCA & XLR is very low. The volume needs to be almost at max before anything is audible.
Have tested on two amps, a Devialet and Sugden A21a2 and both are the same.
Did notice that in the firmware instruction it has screenshot of the web interface with a volume slider and in one of the appnotes it says an init will reset the "vol" parameters so it needs to be manually set to "vol=255" after.
Is it possible that being not used for so long it has reset itself?