680 question -
When you run mics directly into the 680, what do you set your mic gain on? I've been told high is the setting - just curious if this would vary based on source and mics used...
It will vary based on mics (i.e., dynamic vs. condenser), source (loud rock vs. soft acoustic), and placement (close vs. distant).
The manual suggests using the low gain setting unless more gain is absolutely necessary, but if you have to turn the trim up more than, oh, maybe +13 or so, it's probably better to use high gain and turn the trim down, as there will be less noise. The trade-off is there's an increased possibility of clipping.
I've tried to make notes on what settings I use with various mics in various situations, but I usually still end up adjusting things each time.