So I have read in a few places that the Helix has unity gain at helix volume knob at max. I always create patches with my LT's volume know at about 11'o clock. This applies to to both headphones patches as well as patches for playing through amp/cab. I keep the channel volume at about 5-7 (varies some by patch) and then adjust the volume at amp, if needed. I have 2 questions: 1) What is unity gain and why do we need to be at unity gain? Are there any sonic implications? 2) If I were to max out the helix knob, where do i compensate? Channel volume? I can't imagine being able to play via headphones without doing so if I were to just max out the helix knob. Thanks !