I have a Littlebox I got from Bean. Instead of having multiple lights for -20, -6, etc it has one light which goes from off-green-yellow-red depending on how hard you push it. I'm not sure how to interpret that single LED.
For the most part at loud shows the gain knobs end up around 9 o'clock with my R09 mid scale. At this point the single LED on the Littlebox is blinking on/off green, with maybe a tiny bit of yellow on the hot spots. Perfect in that case. If I run into my mod R4, that box takes a much hotter signal than the R09, so I've been leaving the gain knobs on the Littlebox alone, and adding a bunch of gain on the R4. Why? Because I don't know how much headroom is in the Littlebox.
What say ye? Opinions are nice, facts are even better.