motor encoder controlled volume pot

[Tim Curtis]

What make/model is the Amp and how is it connected to moOde?

It's just got RCA inputs on the back, very basic, volume control on the left, input selector on the right.

 I have a DAC connected to RCA in, it also has no volume control.

There is no way for moOde to send volume control commands to a volume pot on a remote device.

Your best bet is to use either MPD Software volume (32 bit) or CamillaDSP software volume (64 bit) combined with calibrating your system for volume using the steps below. This ensures that at typical listening levels the amount of software volume attenuation (in dB) will so small that distortion (if any) thats created will be completely inaudible.

1. Turn Amp volume down to 0 (no sound output)
2. Set moOde volume to 100 (full 0dB level)
3. Play a track that represents the type of music you listen to often
4. Gradually raise the Amp volume to a point where the sound is as loud as you would ever listen at
5. Reduce moOde volume to typical listening level

If you use CamillaDSP software volume the attenuation in dB can be displayed in the moOde volume knob by turning on the "Display dB volume" setting in the MPD section of Audio Config.