If this is a poweramp only then that would be the threshold for lighting the "signal present" LED. Meaning the minimum signal voltage, if you do live sound much and something goes quiet the signal present indicator tells you at a glance if the the fault is before or in/after the poweramp.
Just call me B-String 2
GK Club #488 Big Cabs #175 Peavey Amps #92 50+ Club #44
Originally Posted by beans-on-toast
I told my manager that I wanted a regular gig. She told me to try prune juice.