For example, when I’ve got two mics on an instrument/amp and want to mix them together. Or any two channels in a session. When I’m subtly adjusting their levels within the context of the mix (i.e. turn one up, then the other down to compensate), it’s hard to compare which mix is the most suitable because I can only move one fader at a time. And if it gets louder at any point, my brain is there telling me it sounds better. Any suggestions welcome. Trying to avoid buying a physical set of faders if possible.