The codes are in the manual (page 37-38) and can be selected via the menu.
http://mytekdigital.com/download_library/Stereo192-DSD_DAC_Manual_v.1.7.2.pdfThe remote operates under RC-5 standard which can control up to 32 devices, with 64 commands assigned to each of them:
http://en.wikipedia.org/wiki/RC-5Stereo12-dsd-dac can operate as
1. TV ( address - 00 )default
2. Preamp 1 ( address - 16 )
3. CD ( address - 20 )
In either of these option volume_up volume_down corresponds to turning the stereo192-dsd-dac knob
"vol_up" - turn knob right ( command - 16 )
"vol_down" - turn knob left ( command - 17 )
"1" - press "menu" ( command - 01 )
"2" - press "FN1" ( command - 02 )
"3" - press "FN2" ( command - 03 )
"5" - press knob ( command - 05 )