When you see "127" in a setting like that in a music program, it is a sign that the coding is using MIDI cc commands. Even if it is controlling something like the Volume of an Audio Track.

So zero is no sound, 127 is all the way up.

The negative numbers are there so that you can reduce the Volume from where it might already be at.

90 is considered the default mean, so internal settings should be normalized to reflect a good sound when you set the faders to 90 or so.


--Mac