Also, when told that the RME likes to use auto ref level and then leave the external amp on max volume, someone in another forum says this:
“That is not the same as fixed output.
Anyway, amps are designed to be driven fully- that is, the input should be at full output (0 dB) or close to it. That's where they perform best. If you control volume at the source, your amp has very little signal to work with and you're hearing the worst your amp can deliver.
You risk blowing your brains out or destroying equipment if you run amps on max. There is really no good reason to do that. It may seem convenient, but it's wrong in every objective way.
I agree and will add that I have the gain trimmed 50% on my class D amp that feeds LS50's. At Odb the volume (on the ADI2 DAC) is at the highest volume I would give these speakers (and yes the amp is way over powered for the speakers).
my suggestion to is turn Auto Ref on, Set the DAC volume to Odb and with the RNHP volume encoder at its lowest setting listen and gradually raise the volume on the RNHP till you think it is just too loud and leave it there ( mark its position). then in the future, use the volume encoder on the ADI2 DAC and leave the RNHP encoder alone”
So what do the RME people here say is the best advice to follow ?
Thanks in advance!
1st of all, could you kindly confirm what RME product you bought ?
ADI-2 FS ?
ADI-2 DAC FS ?
In both cases use smth like a "Mic Cable" with XLR plugs on both sides for a balanced connection.
I read the Rupert Neves information this way, that its "calibrated for" +4 dBu, but it also tell that the maximum input level is +22.8 dBu.
So on the outputs of the RME product I would propose a static setting of +4 dBu reference level. And the ADI-2 DAC FS I would set to +7 dBu. I do not think that it makes a big difference to turn down the volume by -3 to exactly match the +4 dBu.