Gain structure of the Mod Duo X

Using MOD devices Usage Questions
#1

I have been tweaking a pedalboard to get a healthy input signal and to ensure that what goes in, is what comes out. However I now realize that I don’t understand the gain structure of the Mod Duo X.

The input gain control goes from zero to 100. Does 100 represent +10db, or what?
I usually have this set at 40%. But this percent is not ‘additional’ gain from a set input of zero gain, zero is actually no volume.

The output gain I can assume is just a % of whatever volume is happening inside the device, but if I connect it to a mixer, I’m basically treating the Duo as a -10db output. I assume 100% is just no drop in gain from whatever is inside the device. So I should leave this at 100%.

Is there an ideal gain to have at the start of a pedalboard? Compressors and other plug-ins are probably not ‘relative’ in this respect and would prefer a known max level.

Possibly I’ve missed some part of the wiki for this stuff.

S.

#2

I’m going to revise my previous post.
It looks like zero input gain is actually “some” gain - and the percent is additional gain.

I ran a synth signal to a mixer, and figured out max volume at -10db, then ran that into the Mod Duo, with the output set to 100%, and did hear signal with the inputs at 0%.

Raising the input to 15% gave me the same signal my synth previously had going direct to the mixer.

So I’m keeping my inputs set to 15% - and working around that.

But it would be good to know what the actual gain structure is.