Permanently saving output level to DAC

[pi-fi]

Hi
I'm using Pi3B with 0.4 Beta playing out (BIT PERFECTLY) to an O-DAC.
I've gone into Alsamixer and set the output level to the DAC to 0dB then exited Alsamixer with Ctrl-C (as advised by Frank).
However, though the level is persistent over most reboots, occasionally it has, for some reason, dropped back down to the default -20dB level.
I'd be grateful to hear from anyone else that has experienced this / knows a surefire way to permanently save the 0dB level in Alsamixer.

Thanks

[hondagx35]

[pi-fi]

Hi Frank,

Thanks very much for the reply.

Regards
Graham