Hello again and thanks for answer,
yeah I guess I shuffle my pedals a bit around, and see what happens. I am sorry about my inability to express myself clearly about 'dynamic range'. I understand impedance matching and/or buffering in general. My idea was just driven that maybe I just use Factor pedals at line level (instead of instrument level). Is there any info about input calibration? I found only possibility to set up output levels. Encoder+ left ( Active) switch in patch mode if I am not mistaken.